360 LAW AND FREEDOM IN HISTORY of architecture that is recorded visually in the contrast between the Ayfa Sophfa and the Olympieum; and in this Helleno-Byzantine illustration of the rapidity of the pace of cultural change during the social interregnum intervening between the histories of an antecedent civilization and its successor we have the answer to H. R. Hall's conun- drum; for in Egyptiac history the interval between the end of the Twelfth Dynasty and the beginning of the Eighteenth Dynasty was likewise a social interregnum that can be recognized, on close inspection, as being the historical lesion that it is, in spite of the solidity with which a parted steel cable's frayed and flying ends have been posthumously spliced and welded together in the white heat of an explosion of cultural fanaticism. In previous contexts1 we have seen reasons for believing that, after the expiry of the mandate of a Middle Empire which had served as a dis- integrating Egyptiac Society's universal state, the disintegration-process was heading towards the dissolution of the time-expired civilization and the eventual emergence of a new society affiliated to it, when this normal course of events was arrested and reversed by the abnormal effects of a fanatical hatred that had been aroused in Egyptiac souls by Hyksos barbarian invaders who had committed the, in Egyptiac eyes, unpardon- able offence of acquiring a tincture of an alien culture before setting foot on Egyptian soil. The consequent anti-Hyksos union sacrte between an Egyptiac dominant minority and internal proletariat resulted in a resur- rection of the Egyptiac universal state in the shape of the New Empire and in the consequent substitution of an Epimethean epilogue to Egyptiac history for the new civilization, distinct from the Egyptiac though affiliated to it, that was showing signs of coming to birth when the normal course of historical development was given a peculiar twist in this Egyptiac case. The social interregnum insulating a moribund Egyptiac Civilization that refused to die from an embryonic affiliated civilization that was denied the opportunity of being born was to that extent abortive; yet the breach of cultural continuity at this point, which was afterwards so studiously patched up and plastered over by the hands of archaistic-minded Egyptian Zealots under the regime of a post- Hyksos restoration, was nevertheless sharp enough to account for the empirically verifiable fact that the two centuries between the end of the Twelfth Dynasty and the beginning of the Eighteenth Dynasty wit- nessed a notably greater change of style in Egyptiac art than the imme- diately preceding two centuries during which the Twelfth Dynasty had been continuously in the saddle. So far from its being incredible that 'the changes observable during its [the Twelfth Dynasty's] continuance' should not be *in any way comparable to those which had come about between its termination and the rise of the Eighteenth,'2 it would be inexplicable if the second of these two periods of equal chronological length should not have witnessed a notably greater change of style than the first, considering that during the first the Egyptiac Civilization was in Its universal state, whereas the second period was occupied by one of 1 See I. i. 136-45; IV. iv, 85, 412; V. v. 2-3, 152, and 331-3. * H. R. Hall, quoted on pp. 350-1, above.