University of California at Berkeley
School of Law
The Mixed Constitution and the
Common Law
by David Lieberman
UC Berkeley School of Law
Public Law and Legal Theory
Working Paper No. 99-4
September 1999
A revised version of this working paper is forthcoming in
Mark Goldie and Robert Wokler (eds.), The Cambridge History of Eighteenth-Century
Political Thought, (Cambridge University Press)
UC Berkeley Public Law and
Legal Theory Working Paper Series
UC Berkeley School of Law, Boalt Hall, Berkeley, CA 94720-7200
This paper can be downloaded without charge from the
Social Science Research Network Paper Collection at
http://papers.ssrn.com/paper.taf?abstract_id=184708
The Mixed Constitution and the Common Law
David Lieberman
[forthcoming in The Cambridge History of Eighteenth-Century Political Thought,
eds. Mark Goldie and Robert Wokler (Cambridge University Press)]
Accounts of England’s constitutional system1, even in the more systematic
treatments of the middle decades of the eighteenth century, followed the common early-
modern pattern in which political theory often comprised an uneven amalgam of classical
maxims of government, narrow partisan polemics, antiquarian learning, historical researches
and technical legal doctrine. None the less, ‘the constitution of England’, so constructed,
enjoyed an extensive influence on liberal political philosophy and western statecraft well
beyond its place of origins and the particular circumstances of its first articulation. ‘The eye
of curiosity seems now to be universally turned’ to this ‘model of perfection’, explained Jean
Louis Delolme in the 1770s (Delolme 1834, p.1). And what was to be discovered in this
model were the general principles of political freedom. ‘‘Tis the Britannic Constitution that
gives this kingdom a lustre above other nations’, extolled Roger Acherley a half-century
earlier, ‘as it secures to Britons, their private property, freedom and liberty, by such walls of
defense as are not to be found in any other parts of the universe’ (Acherley 1727, p.vi).
The organizing principle for much of the eighteenth-century celebration of the
English constitution was the commonplace idea that structures of government could preserve
political freedom only where they frustrated the abuse of political power. To the extent that
the English enjoyed unique levels of political freedom, this was the result of a constitutional
order which so effectively prevented arbitrary or tyrannical acts of power. The achievement
of this kind of political system, in turn, depended on the existence and the co-ordination of
several distinct kinds of institutions and governmental procedures. Theorists of the English
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constitution differed over which of these institutions contributed most critically to the
maintenance of political freedom, and disagreed sharply over which political forces and
developments posed the most toxic threats to liberty’s well-being. But there was a common
supposition, challenged by only a minority of theorists, that public liberty was served by
institutional complexity. Like the other large, centralized states of eighteenth-century
Europe, the English political system contained a dense patchwork of new and older legal and
corporate structures, whose contemporary functions often differed significantly from those
the institution first performed. The first task for eighteenth-century constitutional analysis
was the correct identification of the nature of this complex political order.
i. The Mixed Constitution
No characterization of England’s constitution was more pervasive than the claim
that the kingdom comprised a mixed form of government, combining elements of rule by
one, rule by the few, and rule by the many. The formula recalled the traditional meaning of
constitution to refer to the basic composition or ordering of both political and natural bodies;
and, no less conventionally, it centered the state’s identity on the organization of its
sovereign legislature. The ‘British constitution’, William Blackstone explained in his
renowned Commentaries on the Laws of England (1765-9), entrusted the ‘legislature of the
kingdom ... to three distinct powers’: the king (‘a single person’), the lords (‘an aristocratical
assembly’), and the commons (‘a kind of democracy’); which by operating jointly escaped
‘the inconveniences of either absolute monarchy, aristocracy, or democracy’, while uniting
‘so well and so happily’ the benefits of each pure form (Blackstone 1979, I, pp.50-2). Most
important, and the ‘true excellence’ of this constitutional form, each component part
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provided a potential ‘check’ to the abuse of power committed by any other component part,
which in turn secured a political order best equipped to sustain public liberty:
Like three distinct powers in mechanics [king, lords and commons], jointly
impel the machine of government in a direction different from what either,
acting by themselves, would have done; but at the same time in a direction
partaking of each, and formed out of all; a direction which constitutes the
true line of the liberty and happiness of the community. (Blackstone 1979, I,
p.151)
The theory of England’s mixed government, centered on the tripartite legislature of
King-in-Parliament, first attained prominence in the form of the 1642 statement published
by Charles I as His Majesties Answer to the Nineteen Propositions (see Weston 1965, and
Weston and Greenberg 1981). Eighteenth-century commentators continued to invoke this
source, particularly in their efforts to clarify the ‘limited or regulated’ character of monarchy
in this constitutional system (Mackworth 1701, pp.2,9). And, as in the case of the Answer to
the Nineteen Propositions, their favored presentation clearly echoed classical and renaissance
motifs concerning the superiority and durability of the ‘mixed’ political form. But in one
crucial respect, they distinguished their accounts from earlier formulations. Formerly the
appeal to England’s mixed government competed with other, more absolutist accounts of
English kingship, now it enjoyed constitutional orthodoxy. ‘The constitution of England had
been seen in two very different lights for almost a century before the revolution,’
Bolingbroke observed in 1733; but now ‘our constitution is no longer a mystery.’ ‘It is by
this mixture of monarchical, aristocratical and democratical power, blended together in one
system,’ he explained, ‘that our free constitution of government hath been preserved.’
(Bolingbroke 1844, II, pp.80,119).
The Glorious Revolution of 1688 was routinely credited, as by Bolingbroke, with this
definitive clarification and vindication of the political order. To invoke 1688 and the mixed
constitution was thus to make plain the very different character of kingship in Britain from
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the absolutist governments which oppressed the continental monarchies and, in earlier eras,
threatened England’s liberties. One measure of the security furnished by the Glorious
Revolution was the near complacency mid-century commentators displayed in treating once
fiercely-contested issues concerning the nature and authority of England’s monarch and
parliament (see Pocock 1987, and Weston 1991). Hume in the History of England
acknowledged that it ‘was once disputed ... with great acrimony’ whether the House
Commons formed a constituent part of the original Parliament, but that the question ‘by
general consent’ had been settled against the claims of the Commons (Hume 1983, I, p.467).
Blackstone in the Commentaries noted the same controversy ‘among our learned
antiquarians,’ but dismissed its relevance to current political arrangements (Blackstone 1979,
I, p.145). Soon after, he reassured that ‘whatever doubts might be formerly raised by weak
and scrupulous minds’ concerning ‘the existence’ of an ‘original contract’ between subjects
and sovereign, such qualms ‘must now entirely cease; especially with regard to every prince
who has reigned since 1688’ (I, p.226).
Such appeals to the consensus and stability which followed in the wake of the Glorious
Revolution were, of course, a matter of tendentious exaggeration. Indeed, the most robust
claims for constitutional certainty appeared in precisely those settings - such as
Bolingbroke’s writing - where the legacy of 1688 underwent partisan dispute. The major
enactments of the Revolution era - the 1689 Bill of Rights and Act of Toleration; the 1694
Triennial Act; the 1701 Act of Settlement - were all documents of political compromise and
even purposeful ambiguity, which readily allowed for rival understandings of their
constitutional meaning, novelty or conservatism. As a recent generation of historians has
shown, whatever the successes of the Revolution settlement and the Hanoverian succession,
this political achievement did not lead to the silencing or eradication of the antagonistic
doctrines of non-resistance and hereditary kingship, Jacobite loyalism, royal supremacy or
High Anglican ecclesiology (see Kenyon 1977, Gunn 1983, pp.120-93, and Clark 1985).
Mixed Constitution and Common Law (5)
Where, however, the legacy of 1688 seemed most emphatic was in its repudiation of
the pretensions of Stuart absolutism, and the supporting doctrines of non-resistance and
divine right kingship. ‘The principal duty of the king,’ Blackstone explained, ‘is to govern
his people according to law’ (Blackstone 1979, I, p.226). Accordingly, the Revolution
parliament had moved to regulate and restrain by statute just those practices of royal
prerogative (such as the ‘suspending’ and ‘dispensing’ power) through which James II violated
‘the laws and liberties’ of the kingdom, threatened ‘the protestant religion’, and undermined
the constitutional order by governing ‘without consent of parliament’ (see Williams 1970,
pp.26-7, and Blackstone 1979, IV, 433-4). Whereas James II had sworn a coronation oath
to keep ‘the ancient customs of the realm’, William and Mary swore more precisely to
govern ‘according to the statutes in parliament agreed on, and the laws and customs of the
same’ (Williams 1970, p.37). The ‘continual struggle’ of the first four Stuart reigns between
‘the crown and the people’ and between ‘privilege and prerogative,’ Hume explained in the
final chapter of his History, had been settled ‘in favour of liberty.’ ‘The powers of the royal
prerogative were more narrowly circumscribed and more exactly defined,’ and the ‘great
precedent of deposing one king and establishing a new family … put the nature of the English
constitution beyond all controversy’ (Hume 1983, VI, pp.530-1).
ii. Parliamentary Sovereignty
If the theory of the mixed constitution thus clarified the limited nature of monarchic
power in England, it proved less decisive in settling the extent of parliament’s own
institutional capacity. Eighteenth-century statements of parliamentary authority often
retained the traditional formulation of parliament’s powers in terms of its historical
responsibilities as legislature; High Court (Magna curia); and place of counsel (Commune
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Cocilium Regni) (Atkyns 1734, pp.69-70). But in the routinization of parliamentary
government in the decades following the Glorious Revolution, parliament’s specific
legislative function, including its annual enactments governing taxation and finance, came to
dwarf its other roles (see Thomas 1971, pp.45-88, and Langford 1991, pp.139-206). And by
this time it had become commonplace to analyze parliamentary power more abstractly in
terms of a general theory of sovereignty (see Dickinson 1977, pp.121-42, and Lieberman
1989, pp.31-40,49-55).
Blackstone, whose treatment in the Commentaries supplied the battle-ground for
several important subsequent discussions, approached the topic through a brief summary of
the nature of civil society and political obligation, drawn from the standard materials of
natural jurisprudence. Political authority was created through a voluntary transfer of natural
right; the aims of such political association were better to secure individual liberty and the
collective good; and to achieve such purposes, every political society required ‘a supreme,
irresistible, absolute, uncontrolled authority in which … the rights of sovereignty reside’
(Blackstone 1979, I, p.49). The distinguishing mark of ‘sovereign power’ was ‘the making
of laws’ (I, p.49), which power, in Britain, was exercised by the King-in-Parliament:
It hath sovereign and uncontrollable authority in the making, confirming,
enlarging, restraining, abrogating, repealing, reviving, and expounding of laws,
concerning matters of all possible denominations, ecclesiastical, or temporal,
civil, military, maritime, or criminal; this being the place where that absolute
despotic power, which must in all governments reside somewhere, is entrusted
by the constitution of these kingdoms. (I, p.156)
This, moreover, was a not a claim of pure conceptual abstraction. Parliament had
confirmed its sovereign power by regulating ‘the succession to the throne’ (‘as was done in
the reign of Henry VII and William III’); by altering ‘the established religion of the land’ (‘as
was done … in the reigns of Henry VIII and his three children’; and by changing ‘even the
constitution of the kingdom and of parliaments themselves’ (‘as was done by the act of union
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and the several statutes for triennial and septennial elections’). ‘Some have not scrupled to
call its power … the omnipotence of parliament,’ Blackstone reported (though he himself
found the ‘figure rather too bold’) (I, p.156).
As the critics of this type of formulation argued at length, such legislative
‘omnipotence’ seemed to threaten for very fabric of liberty the English constitution was
celebrated to protect. The kingdom had simply defeated royal tyranny by enshrining
parliamentary absolutism (see Gunn 1983, pp.7-42, and Hamburger 1994). In its most
extreme articulations - as in the case mounted by Paine in the Rights of Man - the criticism
led to the dramatic conclusion that England, in fact, had no constitution: ‘merely a form of
government without a constitution’ (Paine 1974, p.331). A parliamentary supremacy which
included the authority to revise the constitution itself entailed a reversal of a true system of
constitutional government in which the constitution controlled the government, and the
community itself controlled the constitution (pp.278-80).2
Paine’s, no doubt, was a self-consciously iconoclastic assault of English political
orthodoxies. But he navigated a much-traversed of eighteenth-century issue, which recalled
and rehearsed the themes of earlier disputes concerning the nature and limits of political
obligation. Notwithstanding the Commentaries’s imposing itemization of past parliamentary
enactments that altered the basic structures of church and state, there were many who felt
that the bald claim of parliament’s ‘uncontrollable’ authority seriously distorted the nature of
legislative power. One important line of speculation, dominated by jurists and university
moralists, sought a more careful and discriminating treatment of the nature of sovereignty
than that afforded by the Blackstonean language of ‘absolute despotic power’. There was the
need to distinguish ‘sovereign power’ and ‘supreme power’, and to differentiate the domestic
and external (or international) faces of sovereignty (Rutherforth 1822, pp.282-5). Likewise
was the injunction ‘always carefully’ to ‘distinguish juridical from moral power’ in the
understanding of parliament’s ‘supreme jurisdiction’ (Chambers 1986, I, p.140). And again
was the insistence that the frequently ‘indefinite’ extent of sovereign authority in many
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states should not be confused, as by Blackstone, with the idea that sovereignty was therefore
‘infinite’ (Bentham 1977, p.484; and see Sedgwick 1800, p.126).
In addition to the attempted clarification of the concept of sovereignty was a
corresponding effort better to elucidate the term ‘constitution’. Blackstone, as was
conventional, identified the constitution with the organization of the legislature. As William
Paley later put it, ‘A government receives its denomination from the form of the legislature;
which form is likewise what we commonly mean by the constitution of a country.’ (Paley
1838, III, p.253). And on this understanding, the constitution existed so long as the
tripartite structure of king-in-parliament survived as sovereign; and any enactment issued by
this legislative sovereign enjoyed legal validity (Blackstone 1979, pp.51-2). But while the
legislature furnished the core element of the English constitution, few commentators -
Blackstone included - treated this structural form as exhausting the kingdom’s system of
constitutional norms and practices. In this manner, Bolingbroke maintained that ‘by
constitution we mean, whenever we speak with propriety and exactness, that assemblage of
laws, institutions, and customs ... that compose the general system according to which the
community hath agreed to be governed’ (Bolingbroke 1844, II, p.88). On the basis of this
more dense definition of the constitution, it was easy to identify situation in which
parliament’s legislative product violated constitutional principles (Bolingbroke 1844, II,
pp.150-1; and see Burns 1962). And Paley more cautiously and hesitantly conceded that
although a parliamentary enactment ‘in the strict and proper acceptation of the term’ could
not be ‘unconstitutional’, ‘in a lower sense it may, viz. when it militates with the spirit,
contradicts the analogy, or defeats the provision of other laws, made to regulate the form of
government’ (Paley 1838, III, p.261).
Most weighty and controversial, however, was the characterization of the
constitutional resources available for dealing with an abuse or violation of the constitutional
order. Blackstone, in setting out the case for parliament’s ‘sovereign and uncontrollable
authority’, acknowledged the arguments of ‘Mr. Locke and other theoretical writers’ that
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‘there remains still inherent in the people a supreme power to remove or alter the legislative’
when it violated ‘the trust reposed in them’ (Blackstone 1979, I, p.157). And later, in
treating the likely response of the community to severe ‘unconstitutional oppressions’, he
noted that ‘whenever necessity and the safety of the whole shall require it’, future
generations would mobilize ‘those inherent (though latent) powers of society, which no
climate, no time, no constitution, no contract, can ever destroy or diminish’ (I, p.238). But,
throughout the Commentaries, Blackstone endeavored to blunt any radical implications of his
own appeal to natural rights and natural equality (see Lieberman 1989, pp.52-5). In the
hypothetical case of morally-legitimate political resistance, he insisted that this must involve
an extra-legal exercise of individual moral capacity ‘necessarily … out of the reach of any
stated rule or express legal provision’:
No human laws will … suppose a case, which at once must destroy all law …
nor will they make provision for so desperate an event, as must render all
legal provisions ineffectual. So long therefore as the English constitution
lasts … the power of parliament is absolute and without control. (I, pp.156-
7).
It was this Blackstonean insistence that the constitution did and could not specify in
law the rights of popular sovereignty upon which it ultimately was based which more radical
theorists of political liberty challenged most vehemently. ‘Judge Blackstone’, James Burgh
charged in his Political Disquisitions, ‘seems to forget that the safety of the people limits all
free governments.’ ‘The truth is,’ he had ‘placed the sovereignty wrong, viz. in the
government; whereas it should have been in the people …’ (Burgh 1774-5, I, p.226 and III,
p.278). The following year, Richard Price, in his avowedly Lockean defense of civil liberty,
dismissed as ‘absurd’ the doctrine ‘which some have taught’ concerning ‘the omnipotence of
parliaments’. All government was ‘in the very nature of it, a trust’; and legislators exercised
a ‘subordinate and limited’ authority according to the specific fiduciary powers of the
community had delegated to them. ‘If they contradict this trust, they betray their
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constituents and dissolve themselves’ (Price 1991, p.28; and see also Wilson 1967, II, p.723,
and Sheridan 1779).
iii. The Balanced Constitution
The classification of English government as a mixed constitution and the debate over
parliamentary sovereignty tended to focus on somewhat narrow, though fundamental,
questions concerning the structure and extent of public power. Analysis of the English
constitution rarely confined itself to these questions alone, and a more expansive treatment
of constitutional arrangements proved especially critical to the theory of English liberty.
Such explorations ranged widely and often repetitively over a varied stock of preoccupations,
but two broad themes enjoyed particular prominence and influence. One of these concerned
the relationship between English law and English liberty (considered below in section v); the
other scrutinized the conduct and co-ordination of the principal institutions of governance
(to which I now turn in this and in the following section).
The theory of mixed constitution itself supplied the framework for evaluating the
conduct of government. The legislature not only mixed elements of each of the three simple
forms of government, these elements combined in such a manner ‘that all the parts form a
mutual check upon each other’ so as to frustrate the abuse of power. This, in turn, meant
that the mixture demanded a sufficient ‘equilibrium of power between one branch of the
legislature and the rest’ in order to sustain this checking process (Blackstone 1979, I,
pp.150,51). English liberty, in the more familiar contemporary formulation, depended upon
‘the balance of the constitution’.
Once the necessity of constitutional balance was affirmed (and the idea already
figured in the account of England’s mixed government set out in the Answer to the Nineteen
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Propositions), it became possible to consider the particular powers and political functions of
each branch of the legislature in terms of this requirement. William Mackworth, in a 1701
tract justifying the House of Common’s campaign to impeach several royal ministers over
alleged illegalities in their conduct in foreign affairs, furnished a particularly lucid version of
this kind of constitutional analysis.3 ‘The Great Rule’ of English government, he reported to
the House of Lords, was ‘to Preserve the Just Balance of the Constitution’ (Mackworth
1701, ‘To the Lords’). And the practice of ministerial impeachments supplied an exemplary
instance of the manner in which the constitution fulfilled this maxim. The strength of the
king was promoted by the crown’s legal immunity, but his ministers and servants were held
legally accountable in their public functions through the mechanism of parliamentary
impeachment. The crown could not shield any favorite from impeachment, as the decision
to prosecute fell entirely under the powers of the Commons. The actual trial and conviction
of those accused, however, was the exclusive judicial right of the Lords, which again could not
be obstructed by either crown or commons. Thus, the constitution equipped each part of the
legislature with ‘particular Powers’ that served to ‘assist each against the Encroachments of
the other’ and to prevent ‘any one’ part from defeating ‘the Right or Power that is Lodged
in any other’ (Mackworth 1701, pp.2,4, and see pp.5-7, 18-21). The correct understanding
of the practice was supplied by this general logic of distributed functions and cumulative
balance; and the same logic disclosed the vital mechanism through which the ‘absolute,
Supreme Power’ of the legislature came in its internal operations to be checked and regulated
(Mackworth 1701, p.3).
The form of analysis adopted by Mackworth became a staple of eighteenth-century
political debate and speculation. The particular privileges of each legislative branch - the
crown’s powers of appointment; the House of Common’s control of fiscal legislation; the
judicial authority of the Lords - were routinely assessed and defended in terms of how such
authority equipped that institution with sufficient power to resist encroachments from the
other branches. Similarly, projects of reform and parliamentary machinations would
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predictably be defended and denounced in terms of their likely impact on constitutional
balance. Nonetheless, throughout the century up until the era of wars against revolutionary
France, one formidable issue dominated the debate over the health of the mixed and balanced
constitution: the relationship between the executive power of the crown and the
independence of parliament, especially the House of Commons.
‘Executive power’, according to the conventional juridical categories, denoted to the
task ‘of enforcing’ (as opposed to ‘creating’) the laws (Blackstone 1979, I, p.142; and see
Rutherforth 1822, pp.283-5). In more common usage, the ‘executive’ referred to the potent
list of ‘discretionary powers … vested in the monarch’, as Burke described it, ‘for the
execution of the laws, or for the nomination to magistracy and office, or for conducting the
affairs of peace and war, or for ordering the revenue’ (Burke 1884, I, pp.469-70). Among
the more delicate of the kingdom’s constitutional arrangements was the placement of
legislative power jointly in the hands of ‘kings, lords and commons’, and the granting of
executive power to ‘the king alone’ (Blackstone 1979, I, p.143).
The expansive eighteenth-century discussion of the relationship between executive
and legislative authority engaged directly the major changes in governance that emerged in
the decades following the Glorious Revolution. These included, first, the dramatic expansion
of the size, costs and revenues of statecraft: the large military establishment supporting a
bellicose foreign policy; the new apparatus of public finance and national debt; the reliance
on custom and excise; and the drove of crown appointees required to staff these structures.
Second was the system of parliamentary management utilized to secure the annual legislative
renewal of this statecraft: the techniques of ministerial direction of the crown’s interests in
parliament; and the extensive utilization of government offices, patronage and electoral
influence to garner support in the House of Commons.
Students of eighteenth-century political thought are now well familiar with these
developments, and the terms in which they were evaluated, defended and especially
condemned.4 The case against received classic exposition in the journalist denunciations of
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Walpole’s administration in the 1720s and 1730s through such widely-disseminated vehicles
as Trenchard and Gordon’s Cato’s Letters and Bolingbroke’s Craftsman. Bolingbroke, as we
have seen, fully embraced the standard formulation of England’s ‘mixed constitution’; and
further celebrated this constitution as the ‘tree’ which produced ‘that delicious and
wholesome fruit’ of ‘liberty’ (Bolingbroke 1844, II, p.112). Within this mixture, the
‘essentials of British liberty’ were sustained through ‘parliamentary freedom’; and throughout
English history, attacks on liberty invariably took the form of campaigns to subdue
parliament (II, pp.96-7). What, in turn, ultimately sustained this vital parliamentary
freedom was the mechanism of parliamentary elections which enabled the community to
ensure ‘the integrity of their trustees’ in the Commons. ‘As a bad king must stand in awe of
an honest parliament, a corrupt house of commons must stand in awe of an honest people’
(II, p.118).
In past ages, parliamentary freedom was challenged royal prerogative; currently, it
was undermined by the more subtle, but no less malignant, forces of executive corruption.
The unprecedented size of the civil and military establishments, along with the inflated
revenues of the crown (which, no less menacingly, existed in virtue of equally unprecedented
levels of public debt), supplied government with a vast network of patronage through which
to transform, through ‘place’ and ‘office’, the trustees of English liberty into the pawns of
executive power. At the same time, the deployment of electoral patronage and the statutory
extension of the parliamentary term to seven years disabled the mechanisms of electoral
accountability. Superficially, the outward form of a constitution of king, lords and commons
was maintained. In practice what prevailed was an anti-constitutional regime of government
‘by corruption’ that placed parliament under the ‘absolute influence of a king or his minister’
(II, p.93).
The understanding of the constitution offered by Bolingbroke and like-minded
opponents of the Hanoverian regime thus placed the fate of English liberty squarely upon the
virtue of the community (it is capacity to hold parliament to its trust) and the independence
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of parliament (in its capacity to combat the ever-present tendency of political power towards
corruption, abuse and aggrandizement). As such, the account - standardly adorned with the
appropriate classical maxims and examples from Roman history - constituted a distinctly
‘republican’ and ‘commonwealth’ reading of the British constitution; or, in the more
common contemporary usage, it furnished a ‘country’ critique of Hanoverian ‘court’ politics
(see Pocock 1975, pp.467-90). The positive ‘commonwealth’ or ‘country’ strategy for
restoring constitutional balance followed directly from its diagnosis of the current threats to
British liberty. The fiscal resources and scale of government were to be reduced through the
elimination of public debt. The manipulation of parliamentary deliberations by the executive
was to be destroyed by barring those with government offices (‘placemen’) or contracts from
the House of Commons. And the independence of Parliament was to be restored through a
strengthening of the electoral process: ‘freedom of elections’ (the elimination of electoral
patronage and expenditures in the borough constituencies) and ‘frequent elections’ (the
repeal of the Septennial Act). With the adoption of these measures, the constitution would
be restored, and the community rescued from the party divisions and ministerial rivalries that
had infested politics since the Glorious Revolution.
The response of the ‘court Whigs’ to this indictment of British political practice was
joined immediately by ministerial apologists and journalists in the 1720s and 1730s (see
Pocock 1975, pp.446-61; Browning 1982; Burtt 1992). But what was to prove the most
elegant and suggestive of the responses to the ‘republican’ interpretation of the constitution
did not appear until 1741-2, when David Hume presented the first of the several editions of
his ‘Essays, Moral and Political’ published in his lifetime.5 In these essays, as in the later
History of England, Hume tendentiously adopted ‘the temper … of a philosopher’, who
properly recognized to the ‘infinitely complicated’ texture of ‘all political questions’, and
taught ‘a lesson of moderation’ to replace the ‘violent animosities’ of the ‘party-zealots’
(Hume 1994, pp.216,12-3). He concurred in the commonplace judgment that England’s
mixed system of government produced unequaled levels of public liberty. ‘The whole history
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of mankind,’ he reported, offered no comparable instance of a community governed ‘in a
manner so free, so rational and so suitable to the dignity of human nature’ (Hume 1994,
p.217). But in reaching this conclusion, Hume distanced himself from many contemporary
commentators by emphasizing the historical novelty, institutional fragility and considerable
political risks of this distinctive form.
In his response to the ‘country’ attack on Walpolean corruption, Hume maintained
that what had there been treated as pathological features of post-Revolution politics instead
needed to be acknowledged as the inevitable, though potentially dangerousness, features of
England’s complex institutional structures. The political order secured through the Glorious
Revolution and Protestant succession had ended the destructive constitutional conflicts of the
Stuart era. And these developments likewise had served to blur and attenuate the kingdom’s
earlier political divisions between Whig and Tory parties. But it was wrong to expect that
this clarification of the constitution simply eliminated political division and partisanship.
The constitution’s ‘extremely delicate’ combination of ‘republican and monarchical parts’
meant that ‘different opinions must arise’ over its proper balance, ‘even among persons of
the best understanding’. On any particular issue ‘some will incline to trust larger powers to
the crown’, while others would fear the ‘approaches of tyranny and despotic power’; and
hence, partisan divisions had to allowed as ‘the genuine offspring of the British government’
(pp.40-1, 44-55). Moreover, since ‘the power of the crown’ was ‘always lodged in a single
person, either king or minister’, the extent of this power would inevitably vary according to
the ambition and capacity of the individual exercising it. And accordingly, the constitutional
structures could never ‘assign to the crown such a determinate degree of power, as will, in
every hand’ serve the purposes of constitutional balance (p.27; and see pp.203-5).
If, for Hume, political division and constitutional ambiguity formed an ‘unavoidable
disadvantage’ of England’s system of ‘limited monarchy’ (p.27), the mechanisms of
constitutional balance themselves required similar re-examination and elucidation. Contrary
to the conventional wisdom concerning the balance among king, lords and commons, Hume
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maintained that the constitution in fact ‘allotted … to the house of commons’ a ‘share of
power … so great that it absolutely commands all the other parts of the government’ (p.25).
Neither the monarch’s legislative veto, nor the privileges of the lords, was sufficient to
counter the strength of the commons. The costs of modern statecraft, coupled with the
house of commons settled control over the ‘right of granting money’, gave the body more
than enough capacity to overwhelm the constitutional order (pp.25-6).6
What, in fact, prevented this destruction of the mixed constitution were precisely
those frequently-condemned patronage resources of the crown which created a block of
support in the house of commons sufficient to maintain the crown’s authority (p.26). In this
manner, Hume concluded, executive influence was revealed as the true savior of the
constitutional order:
We may … give to this influence what name we please; we may call it by the
invidious appellations of corruption and dependence; but some degree and
some kind of it are inseparable from the very nature of the constitution, and
necessary to the preservation of our mixed government. (Hume 1994, p.26)
In the decades which followed, constitutional argument and programs of reform
routinely adhered to the script set out in these polemics of the early-Hanoverian period.
Apologists for the political order emphasized the manner in which ‘executive influence’ had
simply replaced ‘prerogative’ as the main source of royal power in the scheme of
constitutional balance (see Blackstone 1979, I, pp.322-5). But even the most complacent
observers recognized that the scale of British government and its military establishment gave
the executive, in Blackstone’s phrase, ‘an influence most amazingly extensive’ (p.324).
Accordingly, the conduct of executive government and its impact on parliamentary
independence necessarily remained a leading preoccupation (see Hume 1994, pp.26-7; and
Burke I, pp.444-50). This was an imperative that framed both moderate and radical projects
of constitutional purification (see Cannon 1972, pp.47-97, and Langford 1989, pp.710-9).
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The radical schemes of constitutional reform, developed in the contexts of the
Wilkite protests of the 1760s and the American resistance of the following decade, offered
increasingly democratic versions of the ‘country’ program to block executive corruption by
strengthening the mechanism of parliamentary election. The ‘subversion of the
constitution’ at the hands of ‘parliamentary corruption’ received something like its
encyclopedic denunciation through the vehicle of Burgh’s three-volume Political
Disquisitions. The ‘British government’, he reported, had long ceased functioning as a mixed
constitution, and now was ‘really a juntocracy … or government by a minister and his crew’
(Burgh 1774-5, I, pp.49-50, and see III, p.267). The recovery of parliamentary
independence required, as John Cartwright expressed the radical prescription, ‘making our
parliament annual and our representation equal’ (Cartwright 1776, p.15).7
Conservative critics of this approach to parliamentary reform, such as Josiah Tucker
and Edmund Burke, returned to analysis furnished by Hume, arguing that such schemes
actually threatened to unbalance the constitution by over-strengthening its republican
features, and thereby exposed the kingdom with all the vices and instabilities correctly
associated with pure democracy (see Hume 1994, pp.31-2; Tucker 1781, pp.257-74; and
Burke 1884, VII, pp.71-87). But even the alternative, self-consciously moderated schemes
of political reform adhered to much the same logic of constitutional balance. When in 1780
Burke presented to the House of Commons the whig version of the popularly-agitated plan
for ‘economical reform’, he duly stressed that ‘economy’ itself merely constituted by a
‘secondary’ goal of this plan for administrative retrenchment. Its primary purpose was to
reduce ‘the direct and visible influence’ of the executive, and to extinguish ‘secret corruption
almost to the possibility of its existence’ (Burke 1884, VII, p.356).8
The debates over corruption, influence and constitutional balance formed the
common coin of political argument in eighteenth-century Britain, and frequently involved
little better than repetitive and even formulaic rehearsals of stock themes. Yet, this material
came to attain an intellectual impact far more substantial than the oftentimes narrowly-
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partisan contexts of its rehearsal. In focusing so much attention on the relationship between
executive power (on the one hand) and integrity of the house of commons (on the other),
the debate tended to shift attention away from the conventional image of the mixed
constitution and its combination of monarchic, aristocratic and democratic elements.9 And
this, as was perceived with special force by the author of the period’s single most famous
treatment of the English constitution, made possible an alternative explication of the nature
of England’s complex political structures. Not the least of Montesquieu’s remarkable
achievements in this account was to convince a large, cosmopolitan audience that the design
of England’s government, so described, revealed the foundational principles for the general
theory of constitutional freedom.
iv. The Separation of Powers
Montesquieu’s renowned chapter ‘On the Constitution of England’ formed the
center-piece of the first of two books (Books 11 and 12) of L’Esprit des lois devoted to ‘the
laws that form political liberty’. The first of these considered liberty ‘in its relation with the
constitution’; a form of liberty, Montesquieu began by arguing, that was commonly
misidentified with democratic self-government. Instead, political liberty was uniquely a
property of those ‘moderate governments’ which made possible such a stable structure of law
that their subjects were enabled ‘to do everything the laws permit’. Such liberty could survive
only under a government where ‘power is not abused’; and the key mechanism for preventing
the abuse of power, Montesquieu famously claimed, was a political form in which ‘power’
checked ‘power by the arrangement of things’ (Montesquieu 1989, pp.154-6).
Having thus clarified in the abstract the nature of constitutional freedom, the French
jurist invoked England as the sole ‘nation of the world’ whose constitution had ‘political
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liberty for its direct purpose’. ‘We are going to examine the principles on which this nation
founds political liberty,’ he explained. ‘If these principles are good, liberty will appear there
as in a mirror’ (pp.156).10
The detailed analysis of England’s constitution (Book 11, chapter 6) centered on an
account of how the ‘three sorts of powers’ exercised in every state - legislative power;
executive power; and ‘the power of judging’ - were, in England, distributed into separate
institutional hands. It was in terms of its complex distribution and coordination of these
three powers that Montesquieu identified those features of England’s political system
designed to frustrate the principal forms of political and legal tyranny.11 In the case of the
‘power of judging’, the separation meant that those responsible for creating law and for
mobilizing the resources of the state lacked the power of punishing particular ‘crimes’ or
‘legal disputes between individuals’. English justice - in an oblique reference to common law
juries and the system of semi-annual judicial assize circuits - placed the ‘power of judging’ in
the hands of temporary tribunals ‘drawn from the body of the people’ (pp.157-9).
The ‘power of judging’ was acknowledged to be weakest of the three elements of state
power (p.160), which meant that the distribution and operation of legislative and executive
powers required the most attention. Here Montesquieu’s discussion reworked and revised
topics already established in native debates over the balance of the constitution.12 The
division of parliament into two houses served the interests of political stability by giving
those ‘distinguished by birth, wealth, or honors’ their own assembly serving their ‘separate
views and interests’. But the same bicameral structure also created an internal restraint on
legislative power by requiring the agreement of two separate bodies in the making of law
(pp.160,164). The monopolization of executive authority by an hereditary monarch
rendered explicit the institutional division between legislative and executive powers. The
monarch’s ‘faculty of vetoing’ proposed legislation meant that ‘the executive power’ could
‘check the enterprises of the legislative body’ when these tended to the aggrandizement of
power (p.162). The ‘legislative power’, in turn, could prevent executive abuse through its
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control over ‘the raising of public funds’ and through its power to accuse and impeach those
officials who violated the law ‘in matters of public business’ (pp.163,164). The overall
arrangement of ‘these three powers’, Montesquieu observed, ‘forced’ them ‘to move in
concert’; so that whenever public power was deployed, these institutional checks against the
abuse of power were mobilized (p.164).
The reception of Montesquieu’s analysis in Anglophone political thought proved
rapid and, most often, enthusiastic. ‘The celebrated Montesquieu’, James Madison reported,
was the ‘oracle’ who ‘enlightened patrons of liberty’ invariably ‘consulted and cited’ in
support of ‘the political maxim’ that ‘the legislative, executive, and judicial departments
ought to be separate and distinct’ (Federalist Papers 1981, pp.138-9). There, of course, was
much in Montesquieu’s assessment to flatter his English readers (and it is striking how much
less attention was directed to other sections of The Spirit of the Laws which supplied far more
critical and pessimistic assessments of England’s political system (see Book 19, chapter 27,
and Book 20, chapter 7, and Baker 1990, pp. pp.173-85). But the chief importance of the
discussion owed less to its praise for England than to its presentation of England’s
constitution as a basic institutional model which provided the correct framework and standard
for understanding the logic of constitutional liberty more generally. In contrast with native
discussions, Montesquieu’s treatment of English structures and practices proceeded at a highly
abstract level (even such basic nomenclature as ‘House of Lords’ and ‘House of Commons’
was absent), replete with comparisons to political arrangements in the states of the ancient
and modern world.13 This comparative dimension was thereafter greatly extended through
the remainder of Book 11, which continued with three chapters on constitutional liberty in
the case of modern monarchy (chapters 7-9) and nine chapters on ancient governments
(chapters 10-19). Ironically, Montesquieu’s overall account of political liberty in Book 11
devoted more space to the case of ancient Rome (chapters 12-19) than it did to
contemporary England (chapter 6).
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Montesquieu’s more general and comparative concerns help explain what proved a
particularly influential feature of his analysis: the prominence and importance ascribed to
‘the power of judging’. The institutional power and political impacts of courts and legal
practices had long been recognized in the political theory of the European kingdoms. But the
formal analysis of political power, particularly by jurists, tended to remain framed by the
distinction between legislative and executive power. Montesquieu’s departure from this
convention received prompt notice.14 Thomas Rutherforth, in his mid-century Cambridge
University lectures on Grotius, thus lamented the growing fashion to distinguish civil power
into ‘three several parts, legislative, judicial and executive’. ‘Judicial power,’ he countered,
was ‘plainly … nothing else but a branch of the executive power’ (Rutherforth 1982, p.275;
and see Paine 1974, p.388).
None the less, this separating and elevating of ‘the power of judging’ was absolutely
critical to Montesquieu’s comparative purposes. In the case of the modern (continental)
monarchy, such as France, the fact that the king left ‘the power of judging’ to ‘his subjects’
created a level of constitutional freedom in these states unknown in despotic governments,
where ‘the three powers’ were ‘united in the person’ of a single prince. Furthermore, the
common failure in republican states to achieve a stable institutional separation of ‘the power
of judging’ helped clarify Montesquieu’s initial claim in Book 11 that constitutional liberty
could not be equated with self-government (pp.157-8). On the basis of this insight,
Montesquieu explained the precariousness of political liberty in ancient Rome (pp.179-84),
and drew the striking, albeit reassuring, conclusion that ‘the Italian republics’ enjoyed ‘less
liberty than in our monarchies’ (p.157).
Most British commentators eagerly embraced Montesquieu’s emphasis on ‘the power
of judging’, though in a manner which often enlarged and significantly altered his own
teaching. Montesquieu had focused his attention on the English jury and circuit assizes, and
had consistently utilized the phrase ‘la puissance de juger’ (and not ‘le pouvoir judiciare’) to
refer to this third element of state power. His eighteenth-century English translator,
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Thomas Nugent, rendered the phrase as ‘judicial power’ and ‘judiciary power’, thus making
easier the eventual mutation of Montesquieu’s separated ‘la puissance de juger’ into an
independent judicial department or branch of government. Blackstone, whose analysis
followed Montesquieu closely, thus spoke more broadly of the ‘distinct and separate existence
of the judicial power’ being ‘one main preservative of the public liberty’ (Blackstone 1979, I,
p.259). And in explaining this vital - and now extended - constitutional feature, he
emphasized recent legislative changes Montesquieu omitted. Formerly English judges held
office ‘at the pleasure of the crown’ (durante bene placito); now they served ‘during their
good behaviour’ with ‘their full salaries are absolutely secured to them during the continuance
of their commissions’ (I, p.258).15
English authors, such as Blackstone, found in Montesquieu’s treatment of judging a
convenient formula for the accommodating already well-rehearsed precepts concerning the
importance of independent courts and impartial judicial decision-making to English liberty.
The condemnation of the English crown’s earlier reliance on prerogative courts (Star
Chamber, High Commission), along with the denunciation of the royal manipulation of the
common law bench, formed a staple and central theme of the eighteenth-century indictment
of Stuart absolutism.16 Likewise, legislative enactments designed to strengthen the integrity
of common law process - such as the 1679 Habeas Corpus Act, 1696 Trial of Treasons Act,
the 1701 Act of Settlement - figured no less prominently in post-Revolution accounts of the
basic structures preserving public freedom (see Blackstone 1979, IV, pp.431-3; Delolme
1834, pp.46-8,165-70).
Still, Montesquieu’s more abstract thesis concerning the separation of three powers
stimulated an important shift in the English discussion of these familiar themes. In earlier
discussions, concern for the impartial administration of justice focused on the threats posed
by royal power and prerogative. Often the favored case for establishing the independence of
the judiciary from royal interference was to emphasize the courts’ proper dependence on
Parliamentary authority. ‘The Judges’, Roger Acherley urged, ‘ought to give judgment in all
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cases before them without being obliged to resort to the intended king for advice, instructions
or directions.’ Instead, they should be ‘accountable in Parliament’ (Acherley 1727, p.86; and
see Atkyns 1734, pp.96-7). Once Montesquieu’s separation-of-powers thesis gained
currency, it became common to celebrate a far more generalized version of judicial
independence and institutional autonomy. Blackstone stressed the need for the separation of
‘judicial power’ from the ‘legislative’ no less than from ‘the executive power’ (Blackstone
1979, I, p.259). Paley reported ‘the first maxim of a free state’ that ‘the legislative and
judicial characters be kept separate,’ thereby dropping the earlier preoccupation with
interference from the crown (Paley III, p.281). And Burke expansively extolled independent
judges ‘wholly unconnected with the political world’ (Burke 1884, II, p.351).17
The appropriation and adjustment of Montesquieu’s ‘power of judging’ for domestic
purposes was paralleled in the more general reception of his interpretation of the English
constitution. His authority was standardly paraded to confirm whiggish pieties over the
exceptionalism of English liberty; and his formulation of separated ‘power’ checking ‘power’
was mobilized in partisan disputes over constitutional balance (see Fletcher 1939 and Vile
1998, pp.111-21). In his own discussion, Montesquieu did not classify England’s constitution
as a mixture of monarchy, aristocracy and democracy; in Book 11, he reserved this formula
for the government of ancient Rome (Montesquieu 1989, p.170).18 English commentators,
in contrast, frequently layered Montesquieu’s separation of powers thesis on top of the older
theory of England’s mixed constitution (see Blackstone 1979, I, pp.50-2,149-51; Adams
1998, pp.58-61; Paley 1838, pp.265,269-71,281-2). The combination implied two
overlapping networks of institutional arrangements, both of which functioned to frustrate the
abuse of political power. Analytically, however, each thesis was quite distinct: mixed
government explaining the internal composition (and resulting restraints in the operation) of
sovereign legislative power; the separation of powers treating the institutional distribution of
three kinds of state power, of which legislative power was but one. The blending of the two
theses followed readily, given their shared concern with the manner in which complex
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structures and balances helped produce political liberty. None the less, it was possible to use
the materials assembled in The Spirit of the Laws to propose a more substantial and ambitious
recasting of established constitutional pieties. Such a task was undertaken by another
influential continental author, Jean Louis Delolme, whose 1771 Constitution de l’Angleterre,
earned later praise as ‘the best defence of the political balance of three powers that ever was
written’ (Adams 1797, I, p.70).
Even more than Montesquieu, Delolme presented a detailed comparative canvass in
order to confirm the commonplace judgment that England enjoyed unrivalled levels of
political freedom. Of special concern to him was the effort to vindicate the English system
of government from the strictures of those modern enthusiasts of ‘the governments of
ancient times’ (in particular the judgment of his fellow-Genevan, Rousseau), who ‘cried up
the governments of Sparta and Rome as the only fit ones for us to imitate’ (Delolme 1834,
p.209). Thus, although Delolme pursued at length the fundamental ways in which the English
monarchy and nobility differed from their continental counter-parts (see pp.33-40, 323,
335-8), he explored most pointedly the contrast between England’s unique regime of modern
liberty and the republican states of antiquity.
In the course of this ambitious book-length survey, reference to England as a mixed
government of monarchic, aristocratic and democratic parts appeared almost as an
afterthought (p.431). Instead, Delolme emphatically anchored his constitutional analysis on
‘the particular nature and functions’ distributed to the ‘constituent parts of the government’,
which gave English government ‘so different an appearance from that of other free states’
(p.171). The ‘first peculiarity of the English government’ was the crown’s exclusive
monopoly of ‘executive power’ (pp.171, 335). Another ‘capital principle’ was identified in
the provision ‘that the legislative power belongs to parliament alone’ (p.49). And finally
was the ‘singular situation of the English judges’ relative to the ‘constituent powers of the
state’ (p.326); which served to frustrate the abuse of both legislative and executive power
(pp.141-2), as well as to promote that ‘strict and universal impartiality’ of justice which
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formed yet another ‘essential difference … between the English government and those of
other counties’ (p.392). Whereas previous commentators anxiously noted the delicacy and
fragility of England’s constitutional balance, Delolme instead emphasized the political
system’s ‘resources’, ‘equilibrium’ and overall strength (p.171). It was precisely this
‘solidity’ and ‘peculiar stability of the governing authority’ which enabled the ‘several
essential branches of English liberty to take place’ (p.371).
Delolme’s more detailed treatment explained the manner in which the constitution’s
distinctive distribution of government functions secured English liberty from the dangers and
vices that typically afflicted free governments. The political capacity of the crown rested on
its exclusive command of executive power, but this was effectively restrained by the House of
Commons’ control of supply. Such royal authority, denied ‘the power of imposing taxes’,
was ‘like a vast body which cannot of itself accomplish its motions’ (p.66). Conversely, the
fact that executive authority was separated, and even more ‘exclusively vested’ in one
institution, made for an extremely potent form of executive authority. The strength of
English kingship, in this respect, contributed critically to ‘the remarkable liberty enjoyed by
the English nation’(p.335). Historically, this ‘indivisible and inalienable’ executive power
served to unify the commons and lords in common cause against the abuse of royal
prerogative; currently, it proved easier to monitor and restrain than a more diffuse executive
(pp.16-7,187-9, 244-8). More importantly, since executive power was wielded only by an
hereditary monarch, even the most powerful and ambitious of private subjects was
discouraged from attempting that kind of direct seizure of state power that afflicted the
ancient republics. Instead, each English subject - knowing he must remain a subject - acquired
a strong interest ‘really to love, defend and promote those laws which secure liberty to the
subject’ (pp.185n, and see pp.183-8,335).
In treating legislative power, Delolme similarly emphasized the efficacy of unique
structural arrangements. The organization of parliament into Lords and Commons - largely
shorn of its conventional association with ‘aristocracy’ and ‘democracy’, and the social
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divisions to with which these were related - served its primary constitutional function by
introducing an internal restraint on the operation of legislative power. So effective was each
house is blocking the aggrandizement of power by the other, Delolme maintained, that the
crown rarely needed to deploy its veto power to protect the executive from legislative
encroachments (pp.190-1,349-50).
Of equally profound consequence was the unique arrangements governing the
organization and functions of the House of Commons. The people, acting through their
representatives in the Commons, enjoyed a robust power of ‘the initiative in legislation’, that
contrasted favorably to the less potent veto power allotted to the plebian institutions of
antiquity (p.201, and see pp.223-8). This power, however, was restricted by being exercised
‘only through’ the community’s ‘representatives’ (p.232). These representatives - moderate
in number, placed on an easily monitored political stage, and generally selected ‘from those
citizens who are most favoured by fortune’ - were equipped with both experience and
incentives for resisting the ambitions and intrigues of the powerful. Hence, the absence in
England of that kind of lethal political volatility and demagogic manipulation of the popular
will which routinely destroyed liberty in the ancient world (pp.220-3). England’s
‘representative constitution,’ Delolme triumphally concluded, had thus achieved a structural
‘remedy’ to the perversions of republican government that had eluded previous ‘popular
constitution(s)’ (p.233).
In elucidating the history and operation of England’s constitution, Delolme traversed
well-rehearsed matters of political structures, government functions, and themes of balances
and checks. None the less, his study is indicative of how, by the mid-1770s, significantly
divergent accounts had developed concerning the manner in which this government system
produced its celebrated benefit: political liberty. The spectrum of interpretation can be
indicated through a brief comparison of the sharply contrasting positions adopted in
Delolme’s tendentious rendering of England’s separation of powers and in Richard Price’s no
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less substantial recasting of England’s mixed constitution in his 1776 Observations on the
Nature of Civil Liberty.
Ultimately what divided the two theorists was a basic conflict over the nature of
liberty, which by this time boasted a rich and distinguished pedigree.19 Price, who defined
liberty in general with ‘the idea of self-government or self-direction’, identified civil freedom
as the capacity of the members of a given community to govern and make laws for
themselves (Price 1991, pp.22,23-4). Delolme (reacting here to the doctrines of Rousseau)
directly repudiated this approach. ‘To concur by one’s suffrage in enacting laws’ was to
enjoy ‘a share’ of ‘power’; ‘to live in a state where the laws are equal … and sure to be
executed’ was ‘to be free’ (DeLolme 1834, p.212; and see Paley 1838, pp.250-2).
Of greater concern for our discussion here, however, is the particular account each
figure offered for the constitutional basis of England’s freedom. Price, associating civil
freedom with popular self-government, naturally turned to the elected body of legislative
representatives as an appropriate vehicle of self-government in the circumstances of a large
and populous state; such an assembly fulfilled the requirements of a political liberty to the
extent that it ‘fairly and adequately represented’ the community it served (Price 1991,
pp.24-5). Accordingly, England’s claims for enjoying a ‘free government’ depended entirely
on the representativenesss and accountability of the House of Commons. When fashioning
‘the most perfect constitution of government’, Price acknowledged, excellent reasons might
exist to introduce ‘useful checks in the legislature’ by adding a ‘supreme executive magistrate’
and an ‘hereditary council’ to the ‘body of representatives’ (and thus create a mixed form of
government). Still, these institutional additions were, strictly speaking, irrelevant to the issue
of liberty (pp.26-7, and see p.43; and see Adams 1979, pp.87-9).
For Delolme, as we have seen, English freedom was not chiefly a function of political
power’s dependence on the community, much less the result of the people immediately
directing the government themselves. Rather, the liberty England enjoyed was principally a
product of separations and balances operating within the institutions of political power
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themselves. And although Delolme recognized the ‘right of election’ as a basic ‘remedy’
against the abuse of parliamentary power (Delolme 1834, p.249), his detailed treatment of
the distinctive merits of England’s ‘representative’ (as opposed to ‘popular’) constitution,
celebrated the House of Commons as much for its capacity to restrain as to facilitate the
popular will. It was entirely in keeping with this conception of the function of
representatives that Delolme went on to identify the ‘democratical’ features of English
government with ‘the trial by jury’ and ‘the liberty of the press’; instruments which
respectively placed ‘judicial power’ and ‘censorial power’ directly ‘in the people’.20 These
institutions, whose efficacy Delolme emphasized, rendered England ‘a more democratical
state than any other’ (p.381n, and see pp.250-69.). But, the compliment additionally served
neatly (if silently) to efface the democratic credentials of the House of Commons, and
thereby destroy one of the major elements in the conventional depiction of England’s mixed
government.
v. Common Law
The accounts of England’s constitutional system (considered thus far) offered diverse
explanations for the manner in which political structures frustrated the abuse of power; how
England came emphatically to be blessed (in the frequently-invoked Aristotelian formula)
with a ‘government of laws, not of men’. In principle, these treatments need not have
attended, in any particular detail, to the content of the specific law which governed the
relations among individual subjects. Eighteenth-century jurists deployed several analytical
categories to distinguish the issue of political or civil liberty (depending chiefly on the form
of the state) from the issue of personal liberty or personal security (depending chiefly on the
private rights secured by the body of domestic law) (see Miller 1994, pp.130-6).
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Furthermore, ‘the law’ which governed Britain actually comprised several distinct systems of
rules and legal process: Scots law and English law forming one obvious division; but even
within England, Roman law and canon law being utilized in specific jurisdictions, such as the
ecclesiastical courts, the military courts and the courts of admiralty (see Blackstone 1979, I,
pp.79-84).
In fact, however, constitutional analysis attended at length to England’s system of
customary or common law. Just as most commentators found it scarcely possible to discuss
English politics without reference to the mixed and balanced constitution, so they found it
scarcely less difficult to consider the constitution without reference to the common law.
‘The constitution’, John Cartwright insisted, ‘is a frame of government co-eval with, erected
upon, and regulated by, the spirit of the common law of England’ (Cartwright 1776, p.10).
The political importance ascribed to the common law followed several lines of
argument, much of it replete with the same language of exceptionalism and triumphalism
directed at the constitution itself. In the grand narrative of England’s political development,
the common law featured as parliament’s key ally in the struggles for English liberty (see
Weston 1991 and Forbes 1975, pp.233-60). Royal absolutism and unchecked prerogative
threatened the courts of common law no less than the mixed constitution; both had survived
through an extended process of mutual support. ‘Parliaments and the Kingdom’, Matthew
Hale explained, had shown ‘great Regard’ for the common law and ‘great Care … to preserve
and maintain it’ (Hale 1971, pp.35-6). One momentous product of this historical process
was the imposing series of declarations of basic ‘rights and liberties’ issued by parliament at
moments of political peril. Blackstone equipped the Commentaries with a particularly
fulsome and uncritical catalogue of these enactments: beginning with the measures forced
upon an unwilling King John: the carta de foresta and magna carta (the latter, ‘for the most
part declaratory’ of the more ancient common law); next, the confirming legislation of
Edward I and his successors (magna carta having been renewed thirty-two times, according to
the calculations of Sir Edward Coke); then, ‘after a long interval’, the great monuments of
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the Stuart era - the 1628 Petition of Right, the 1679 Habeas Corpus Act (‘a second magna
carta’), the Bill of Rights of the Glorious Revolution; and finally, the 1701 Act of
Settlement, ‘for better securing our religion, laws, and liberties … according to the antient
doctrine of the common law’ (Blackstone, I, pp.123-4 and IV, pp.416-7,431-4).21
The historical symbiosis between the common law and the mixed constitution
followed readily since the two institutions shared the same goal of civil liberty. And the
limitation of public power in England needed to be elucidated in terms of both structures. Just
as the king could not alter the law except through the mechanism of parliamentary
legislation, so he could not accuse a subject or punish him without mobilizing the institutions
of the common law. Thus, when Blackstone confidently boasted that ‘the idea and practice
of this political liberty flourish in their highest vigour in these kingdoms where it fall little
short of perfection’, he immediately referenced ‘the legislature, and of course the laws of
England.’ ‘And this spirit of liberty is so deeply implanted in our constitution’, he
maintained, ‘that a slave or a negro, the moment he lands in England, falls under the
protection of our laws and … becomes eo instanti a freeman’ (I, pp.122-3).22
For common law jurists, English law’s unrivalled devotion to personal liberty received
its fullest manifestation in its protection of the rights of private property.23 Property rights,
particularly ‘the law of real property’, commanded special attention in light of its being ‘the
most important, the most extensive, and … the most difficult’ part of English law (Sullivan
1772, p.18). For the theory of the constitution, however, of greatest concern where those
features of common law that most directly implicated issues of state power. Montesquieu, in
treating the ‘the power of judging’, referred to trial by jury and the legal protections against
arbitrary imprisonment (Montesquieu 1989, pp.158-9). Delolme predictably expanded this
line of analysis through some lengthy reflections on England’s practices of impartial and
equal justice, and on the ‘extreme mildness’ of its criminal law (Delolme 1834, p.329).
Criminal justice, Delolme revealingly reported at the outset of three chapters devoted
to the topic, was strictly not ‘part of the powers which are properly constitutional’; yet an
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area of law that so concerned ‘the security of individuals’ and ‘the power of the state’ was
necessarily included (pp.135-6).24 In addition to the basic separation of judicial power
(pp.141-2,146-7), England’s legal order provided a full panoply of provisions further to
ensure the liberty of the subject: public trials; protection against false imprisonment and false
accusation; the elimination of judicial torture; written indictments and public trials; and a
diligent strictness over procedural requirements in the interest of the accused (pp.104,147-
53,165-70). ‘All branches of government are influenced’, he enthused, ‘from the spirit both
of justice and mildness’ which orientated ‘the laws for the security of the subject’ as well as
‘the manner in which they are executed’ (p.298).25
The heralded institutional center-piece of the common law checks against the abuse
of power was, of course, trial by jury - ‘that part of their liberty’, Delolme reported, ‘to
which the people of England are most thoroughly and universally wedded’ (p.164). What
Matthew Hale extolled as ‘the best Trial in the World’ figured prominently and
unsurprisingly in the eighteenth-century catalogue of the antiquity and exceptionality of
England’s liberties (Hale 1971, p.160). Blackstone’s Commentaries (notwithstanding an
initial reassurance ‘not (to) mispend the reader’s time in fruitless encomiums’) supplied no
less than three extended panegyrics detailing ‘the glory of English law’ and ‘this palladium’
of ‘liberties’ (see Blackstone 1979, III, pp.349-51,379-81, and IV, pp.277-8,342-4). In
these treatments, moreover, the common law jury was often given an explicit and broad
political purpose, which overshadowed its more specific function as one of several modes of
trial in English law. Delolme, as we have seen, classified juries as part of the ‘democratic’
components of English government. Blackstone reported that juries not only restrained the
‘prerogatives of the crown’ in criminal cases (IV, p.343); by placing ‘in the hands of the
people’ an appropriate ‘share’ in ‘the administration of public justice’, they equally served
against ‘the encroachments of the more powerful and wealthy citizens’ (III, pp.380-1). John
Adams proposed that the English constitution could be thought to embody two distinct
schemes of mixed government: a mixed legislature of king, lords and commons; and a mixed
Mixed Constitution and Common Law (32)
executive of king, judges and juries. On this basis, ‘two branches of popular power’ were
revealed - ‘voting for members of the house of commons’ and ‘trials by juries’ - which
together help sustain ‘the balance and mixture of the government’ (Adams 1998, pp.58-60;
and see Adams 1979, pp.88-92).
As Adams’s testimony indicates, this specifically political treatment of the common
law jury was by no means unique to establishment apologists, such as Blackstone and Delolme.
Indeed, through the course of the century, it was the radical critics of Hanoverian
government who often pressed this characterization most zealously. Wilkes and his
propagandists in the 1760s celebrated the jury as a representative body against which to
measure the failings of a now-corrupted assembly of parliamentary representatives (see
Brewer 1980, pp.153-7). And in a series of notorious prosecutions for seditious libel then
and in following decades, political dissidents found ample confirmation of the continuing
efficacy of juries in the battle to preserve English liberties. Following the lapse of the
Licensing Act in 1695, the common law bench revised and adapted the law of seditious libel
so that it became a leading (if often counter-productive) instrument for silencing public
attacks on the government. The frustration of these efforts largely depended on the
repeated recalcitrance of jurors to accept the specific and limited legal task assigned them in
such cases by government prosecutors and common law judges.26 Such episodes, and their
contemporary celebration, both confirmed and help sustain the powerful ‘constitutionist
idiom’ which remained so central to British radicalism through to the nineteenth century (see
Epstein 1994, pp.3-5,29-69). As in past eras, the battle against tyranny came armed with
the appropriate common law weapons.
The common law’s well-considered role in the restraining of public power did not,
however, exhaust its contribution to the theory of England’s constitutional freedom. Of no
less importance was the fund of conceptual resources the law provided for defining the myriad
relationships of authority and subordination that comprised the social order of the
community. The same government structures, routinely described in the explicitly political
Mixed Constitution and Common Law (33)
terms of the theory of the mixed constitution or the theory of the separation of powers,
were no less appropriately or commonly understood in the settled juridical categories of
private right and legal title.
Burke made full use of this point in the ornate celebration of the English political
experience which he pitted against the follies and wickedness of the French revolutionaries.
Invoking the testimony of Coke and ‘and the great men who follow him to Blackstone’, he
emphasized how ‘our lawyers’ had taught the nation not only to regard its ‘most sacred rights
and franchises as an inheritance’; in so doing, they additionally had made it possible for ‘all
of the people’ to conceive government power and their own rights under a unifying logic of
prescriptive title. ‘By a constitutional policy’, Burke shrewdly and reassuringly observed, ‘we
receive, we hold, we transmit our government and our privileges, in the same manner in
which we enjoy and transmit our property and our lives’ (Burke 1969, pp.117-20; and see
Pocock 1960).
While Burke’s Reflections on the Revolution in France supplied what for later
generations became the best-known statement of this common law orientation, for his
contemporary audience its most complete rehearsal had appeared twenty-five years earlier in
the first volume of the Commentaries on the Laws of England. Blackstone’s celebrated
volume furnished its readers with a uniquely detailed, elegant, and subsequently influential
apology for Britain’s constitutional order. But this learning did not come assembled in a
discrete section on the ‘constitution’ or even on ‘constitutional law.’ Instead, the book,
devoted to ‘the Rights of Persons’, began with a chapter-length survey of ‘the three great
and primary rights’ of English subjects: ‘personal security, personal liberty, and private
property’. The chapter concluded with an overview of the principal ‘barriers’ established ‘to
protect and maintain’ the three rights, which Blackstone characterized as a scheme of
‘auxiliary subordinate rights of the subject’ (Blackstone 1979, I, p.136). These ‘auxiliary’
rights comprised the right of self-defence; the right to petition the king or parliament; the
right to apply ‘to the courts of justice for redress of injuries’; the ‘limitation of the king’s
Mixed Constitution and Common Law (34)
prerogative’; and ‘the constitution, powers and privileges of parliament’ (I, pp.136-9).
Blackstone’s chapters on parliament and the king then followed; this material presenting ‘the
rights and duties of persons’ who exercised ‘supreme’ magistracy. The Commentaries then
treated, in turn, the ‘rights of persons’ exercising ‘subordinate’ magistracy (sheriffs,
constables, etc.); the rights associated with particular social ranks and stations (clergy,
nobility, military, etc.); the rights ‘in private oeconomical relations’ (master-servant,
husband-wife, etc.); and the rights of ‘artificial persons’ (corporations).
This ordering of materials presented the central institutions of government as but one
particular cluster of ‘rights of persons’; rights which functioned to secure the ‘auxiliary
subordinate rights’ of the subject, and that existed within a hierarchical system of personal
rights which gradually reached down to the legal relations of the domestic household. The
approach, which later English jurists found confused (see Dicey 1939, p.7), served to erode
the kind of organizing boundary between state and society that featured in later treatments of
constitutional law. And it properly reflected the manner in which the eighteenth-century
state continued to be conceptualized and debated both in terms of the categories of customary
law and in terms of the divisions of political science. Indeed, the two overlapping registers
appeared in description of each of the main components of England’s constitutional system.
Thus, the monarchy, from the perspective of constitutional analysis, appeared in its
executive capacity and in its power of legislative veto. But the crown was equally conceived
as a form of ‘estate’, an analogy that greatly complicated and potentially constrained efforts
to alter the royal succession (see Nenner 1977, pp.145-54,178-90, and Clark 1985, pp.121-
41). Parliament’s constitutional function, as we have seen, centered on its control of supply
and its legislative supremacy. But when contests arose over Parliamentary ‘privilege’, its
traditional status as a ‘high court’, whose power and jurisdiction were settled by ‘custom and
usage’ (or lex parliamenti), regained its prominence (Blackstone 1979, I, p.158; and see
Thomson 1938, pp.329-33, and Williams 1970, pp.221-49). Again, the parliamentary
franchise figured critically in the political assessment of the independence of the House of
Mixed Constitution and Common Law (35)
Commons and its the credentials as a representative assembly. But the franchise was no less
recognized to be a form of property for those who exercised it; and in disputed elections it
was the issue of an elector’s good title to this property that often proved paramount.27
The categories of the common law thus furnished a distinctive framework for the
elucidation and evaluation of constitutional structures; a framework, moreover, which at the
same time effectively deprived the constitution of its convenient, if misleadingly limited,
identification with the ‘the form of the legislature’ (see Paley 1838, III, p.253). The gain in
conceptual enrichment and juridical accuracy, in this sense, came at the cost of definitional
clarity and precision. ‘Some have said that the whole body of the laws’ makes the
constitution; ‘others that King, Lords and Commons make the constitution’, reported John
Adams from Boston in 1766. But even though neither definition seemed quite ‘satisfactory’,
‘Yet I cannot say that I am at any loss about any man’s meaning when he speaks of the
British constitution, or of the essentials and fundamentals of it’ (Adams 1998, p.57).
Mixed Constitution and Common Law (36)
1 The 1707 Act of Union, which created the single political entity of Great Britain from the
previously separate kingdoms of England and Scotland, also created some
cumbersome terminology for describing what previously existed as the ‘English
constitution’. After 1707, many of the most important institutional components of
the constitutional structure (House of Commons, House of Lords, the Crown) were
now British and not English. The law and the church, however, remained separately
English and Scottish. Contemporary usage varied among ‘English constitution’,
‘British constitution’ and ‘Britannic constitution’. In this discussion, I have not
sought to unify these several usages. For surveys of eighteenth-century constitutional
developments, see Carter 1969 and Langford 1991, pp.677-725; more detailed
treatments are provided by Thomson 1938 and Williams 1970.
2 Paine, joined Blackstone, in viewing the 1716 Septennial Act, which extended the
maximum duration of the then and future parliaments to seven years, as the
definitive modern example of the parliament’s ability to alter the constitution (Paine
1974, p.280). The controversial statute was standardly given this constitutional
significance by both the defenders and critics of the Hanoverian political order.
3 The details of the episode, and the controversy over impeachments it raised, are set out by
Thomson 1938, pp.222-6.
4 Pocock 1975, Part 3, remains the most ambitious and influential elucidation of eighteenth-
century British political argument in terms of these developments. The relevant and
major changes in statecraft received classic interpretation in Dickson 1967 and
Plumb 1967, and more recent revision in Brewer 1989, O’Gorman 1989, and
Langford 1991.
5 Hume’s general project in political theory extended well beyond these essays to include his
moral philosophy and his philosophic history. The discussion here is confined
Mixed Constitution and Common Law (37)
narrowly to Hume’s treatment of the British constitution and its political impacts.
An appropriately broader treatment of Hume’s political philosophy is provided in
Forbes 1975, Miller 1981, and Haakonssen 1993.
6 For Hume, the power of the House of Commons was but the political face of the societal
transformations of the late-Tudor and Stuart eras, which he identified with commerce
and manufactures. These changes had undermined the power of the peerage and the
feudal order. See Hume 1994, pp.111-2, and Hume 1983, II, pp.522-5, for summary
versions of this important sociological thesis.
7 Burgh also supported the call for an extraparliamentary ‘Grand National Association’ to
lead the mobilization for constitutional reform and restoration; see Burgh 1774-5,
III, pp.428-35. This reform movement is detailed in Christie 1962 and Black 1963.
8 On ‘economic reform’ and its connection with parliamentary reform more generally, see
Christie 1956, Cannon 1972, pp.75-84, and Harling 1996.
9 One by-product of this emphasis (ironic, in light of the actual political power of the
peerage) was the marginalization of house of lords in constitutional discussions.
Paley, for example, found it necessary to explain the ‘little notice (that) has been
taken of the House of Lords’ in his own survey (Paley 1838, III, p.272).
10 The place of Montesquieu’s discussion of England in his more general political theory is
valuably explored in Richter 1977, pp.84-97, Mason 1990, and Baker 1990, pp.173-
85. Montesquieu’s chapter also is examined in two substantial histories of the theory
of the separation of powers; see Gwyn 1965 and Vile 1998.
11 Montesquieu’s discussion in chapter 6, as he emphasized in a concluding comment,
concerned the design of England’s constitution and not the question of whether in
practice this design was realized; see Montesquieu 1989, p.166.
12 Montesquieu’s debts to the partisan polemics of early-Hanoverian Britain are set out in an
important article by Shackleton 1949.
Mixed Constitution and Common Law (38)
13 Some useful comparative perspective is supplied by William Hay’s brief tract on
government of 1728. Hay there identified six principal ‘powers’ found in every
government, and then treated the institutional distribution of these powers according
to whether their exercise needed to be continual or merely occasional; see Hay 1728,
pp.31-60.
14 The ambiguities of Montesquieu’s own text reflect some of the difficulties attending this
revision. At the outset of chapter 6, he distinguished ‘legislative power’ from two
different forms of ‘executive power’ (‘executive power over things depending on the
right of nations, and executive power over things depending on civil right’), before
settling on the (now) more familiar classification of powers among legislative,
executive, and ‘judging’ functions (Montesquieu 1989, pp.156-7). Montesquieu’s
initial formulation recalls the language employed by Locke to distinguish legislative
from two kinds of (analytically differentiated) executive power: executive power and
federative power; see Locke 1964, pp.382-4.
15 The change, introduced after the Glorious Revolution, was made statutory in the 1701 Act
of Settlement (see Williams 1970, p.59). Reference to this legislation became routine
in discussions of the security and independence enjoyed by English judges. Blackstone
also cited a statute of 1760 (1 George III c. 23) which extended the judges’ tenure in
office following the death of the monarch.
16 The seventeenth-century background and famous political conflicts between crown and
common law are examined in Nenner 1977, Sommerville 1986, and Weston 1991.
17 These fulsome versions of judicial independence strained against much of the settled
routines of political patronage and recruitment attending judicial appointments and
promotions; see Lemmings 1991.
18 Montesquieu in chapter 6 identified all the structural features relevant to England’s ‘mixed
government’, though he avoided the label. He regarded England as a largely
Mixed Constitution and Common Law (39)
anomalous political form, which explains some of his reticence in applying
conventional political categories to its constitution. In Book 5, chapter 19, England
is described as ‘a nation where the republic hides under the form of monarchy’
(Montesquieu 1989, p.70).
19 The longer intellectual history is valuably considered in Pocock 1985, pp.37-50, and
Skinner 1998.
20 Delolme was unusual in placing the press and public opinion under a distinct political
function, ‘censorial power’, and in treating this power on par with the other leading
powers of government (Delolme 1834, pp.48, 250-61). Other commentators
likewise observed the contributions of the press and public discussion to the
distinctiveness of British political culture, but tended not to accommodate these
points within their specific account of the constitution (see Montesquieu 1989,
pp.325-7, and Paley 1838, III, p.259). For the important contemporary debate over
press freedom and public opinion, see the valuable discussions in Gunn 1983, pp.88-
94,260-315, and Hellmuth 1990; the larger historiography is surveyed in Harris
1996.
21 Blackstone’s catalogue disregarded the more critical historical scholarship on the origins
of the common law as well as on the antiquity of the mixed constitution (see Weston
1991 and Forbes 1975, pp.233-307). For examples of more restrained contemporary
treatments, see Barrington 1769, p.3, Hume 1983, I, pp.442-6, and Delolme 1834,
pp.20-3. Blackstone’s legal history is examined in Willman 1983 and Cairns 1985.
22 Blackstone’s generous formulation (later invoked by British abolitionists) exaggerated the
common law’s more limited and circumspect treatment of African slaves in England,
and in later editions he revised the wording. Blackstone’s position and the general
scholarship on chattel slavery in eighteenth-century law is explored in Oldham 1992,
II, pp.1221-44.
Mixed Constitution and Common Law (40)
23 Among his accomplishments in the Commentaries was Blackstone’s success in presenting
England’s notoriously labyrinthine and abstruse rules of property law and common
law procedure as ‘the genuine offspring of that spirit of equal liberty which is the
singular felicity of Englishmen’ (Blackstone 1979, III, pp.422-3; and see Lieberman
1989, pp.39-48).
24 Montesquieu’s own consideration of these matters had been placed in a separate book ‘on
the laws that form political liberty in relation to the citizen’ (Book 12), which
followed the immediately prior book on ‘political liberty in its relation with the
constitution’.
25 Delolme’s case for the mildness of criminal justice ignored the developed debate over the
increased severity of penal sanctions which resulted from recent parliamentary
legislation; see Beattie 1986, pp.520-618, and Lieberman, 1989, pp.199-215.
26 In these cases, juries were asked to determine whether in fact an accused printer or author
had produced the publication, while the judges determined whether in law the
publication was or was not a seditious libel. This distribution of responsibility between
bench and jury was modified in Fox’s Libel Act of 1792. The legal and political
dimensions of these seditious libel prosecutions are valuably treated in Hamburger
1985, Green 1985, pp.318-55, and Oldham 1992, II, pp.775-808.
27 The understanding of the franchise as property appeared routinely in election disputes (as
it did in debates over borough disenfranchisement). The issue was aired with
particular thoroughness in the context of the Oxfordshire election of 1754, which
raised the question of whether voters who held copyhold tenures were legally entitled
to the franchise on the basis of these tenancies (see Robson 1949, pp.141-8).
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