be evoked in English recordari facias cases. 85 The extension of this idea both to cases of error and of removals from an eyre is at least suggestive that the dominion precedents may have played some part in the evolution of the English writ of error procedure. 80 There are certain legal problems connected with the assumption of a review jurisdiction over Irish causes that deserve some comment. On its face the precedent of 1218-23 is a close approach to a writ of error proceeding, viz., the submission of a written record for examination of errors of law by the sovereign judicial authority—a procedure which did not then exist in England. Contemporary recordari facias cases had already contributed something to the establishment of a principle that a judgment founded upon error was correctible. But this had been done with reference to vulnerable records— ad hoc statements open to traverse. The subjection of judgments of the King's own courts to a corrective process was a very different thing, for their record was unimpeachable. There is no reason to believe that the record of the King's courts in Ireland was not thus privileged, and consequently the justification for review of Irish causes was a problem of the same nature and magnitude as the review by certification of errors in English assizes. A phrase used by the Council in our Irish case, "our court is not above ourselves," 87 suggests that because the immunity of the King's record was a matter of prerogative, there inhered in the crown an ultimate discretion over it. If this was so, the nature of the discretion needed definition, for although qualitative distinctions between courts within the royal judicial structure might be tacitly recognized, 88 and so lead to an admission that rule of an unimpeachable record was too broad to fit all circumstances of the administration of justice, nevertheless, such an admission would imperil the pillars upon which the royal system rested—the parity of all adjudication done in the King's name and stability of the principle of res iudicata. 85 E.g., Close Rolls 1251-53, 426; Close Rolls 1254-56, 202; Close Rolls 1264-68, 260. 86 Examples of what may be called certiorari for transfer (although not in ultimate form) are to be found in Close Rolls 1251-53, 176 (to Common Bench); 223 (to Justice in Eyre); 196, 444 (to assize judges); Close Rolls 1253-54, i°3 ( to a n assize judge). Examples of the error form are ibid., 140; Close Rolls 1261-64, 301-2. They should be compared with the certiorari in 1 Sayles, op. cit., 16 (1273); error, ibid., 140 (1285), 153 (1285); 168 (1287) (the last a criminal case). 87 Rot. Lit. Claus., 549b. The expression is used with respect to royal immunity from summons. The principle implicit in the expression is so much broader than the circumstances of its utterance that "it seems proper to use it out of its context. Cf. the equally large prerogative of record by the King's own recollection (4 CRR 114; Bracton's Notebook., pi. 857). As late as Edward I's time a scire facias will issue upon such a record (1 Rot. Pari,, 112). 88 Hinted at first by Glanville, De legibus VIII, 5, in the distinction made respecting proof of concords in terms of place made. Bracton, De legibus, 108, points to differences within the royal system, but without hierarchical implications.