cubit, which was used to measure it, were not deposited according to custom in the temple of the god. The emperor ordered the cubit to be transferred to a church; and next year, to the general surprise, the river rose just as usual.(541) Even at a later time Athanasius himself had to confess with sorrow and indignation that under his own eyes the Egyptians still annually mourned the death of Osiris.(542) The end came with the destruction of the great Serapeum at Alexandria, the last stronghold of the heathen in Egypt. It perished in a furious and bloody sedition, in which Christians and pagans seem to have vied with each other in mutual atrocities. After its fall the temples were levelled with the ground or converted into churches, and the images of the old gods went to the melting-pot to be converted into base uses for the rabble of Alexandria.(543) (M189) The singular tenacity with which the Egyptian people maintained their traditional beliefs and customs for thousands of years sprang no doubt from the stubborn conservatism of the national character. Yet that conservatism was itself in great measure an effect of geographical and climatic conditions and of the ways of life which they favoured. Surrounded on every side by deserts or almost harbourless seas, the Egyptians occupied a position of great natural strength which for long ages together protected them from invasion and allowed their native habits to set and harden, undisturbed by the subversive influence of foreign conquest. The wonderful regularity of nature in Egypt also conduced to a corresponding stability in the minds of the people. Year in, year out, the immutable succession of the seasons brought with it the same unvarying round of agricultural toil. What the fathers had done, the sons did in the same manner at the same season, and so it went on from generation to generation. This monotonous routine is common indeed to all purely agricultural communities, and everywhere tends to beget in the husbandman a settled phlegmatic habit of mind very different from the mobility, the alertness, the pliability of character which the hazards and uncertainties of commerce and the sea foster in the merchant and the sailor. The saturnine temperament of the farmer is as naturally averse to change as the more mercurial spirit of the trader and the seaman is predisposed to it. But the stereotyping of ideas and of customs was carried further in Egypt than in most lands devoted to husbandry by reason of the greater uniformity of the Egyptian seasons and the more complete isolation of the country.