Dictionary. s.v. commission). Eyres which in the twelfth and
thirteenth centuries were sent out to transact the judicial and fiscal
business of the Crown in the counties of England were commissions.
When at the close of the thirteenth century and in the fourteenth
century the judicial circuits were established, they too were commis-
sions. The jurisdiction exercised at the "assizes" depends,
according to a traditional though perhaps inaccurate statement,
upon five commissions, the commissions of assize, of gaol delivery,
of oyer and terminer, of nisi prius, and of the peace. The long
history of the restriction of monarchical power includes the limitation
by charter, statute and constitutional custom of the prerogative to
issue special commissions for the exercise of authority over the
subject, particularly authority of a judicial nature. Coke was, there-
fore, able to say "legall commissions have their due forms as well
~ as originall writs, and none can be newly framed without Act of
Parliament, how necessary so ever they seem to be" (4th Inst. 478).
Amid the general reliance placed in the seventeenth century upon
the twenty-ninth clause of Magna Carta and the like clauses in
confirmations and in such statutes as 37 Edw. III. c. 18 and 42 Edw.
IIL. c. u1r - Cf. Vinogradoff, Collected Papers, pp. 312, 313 - it was
natural that they should also form part of the justification put for-
ward for denying to the Crown a power to set up new commissions
of inquisition. Such a denial is contained in the Case of Com-
missions of Inquiry, printed in the posthumously published twelfth
part of Coke's Reports, (1). The printed report is unsatisfactory,
but a learned and scholarly, though anonymous, contributor
to the Law Review, vol. 15, pp. 285-292, has given us a better
account of the case from the manuscripts, together with a full
explanation. The commission there considered related to the
enclosure of arable land and its conversion into pasture, with the
consequences of rural decay and depopulation, which have been the
subject of repeated legislation for more than a century (Holdsworth,
(1) (1608) 12 Co. Rep. 31 [77 E.R. 1312).