survivals of prehistoric construction. (195) (195) As to evolution in architecture, and especially of Greek forms and ornaments out of Egyptian and Assyrian, with survivals in stone architecture of forms obtained in Egypt when reeds were used, and in Greece when wood construction prevailed, see Fergusson's Handbook of Architecture, vol. i, pp. 100, 228, 233, and elsewhere; also Otfried Muller, Ancient Art and its Remains, English translation, London, 1852, pp. 219, passim. For a very brief but thorough statement, see A. Magnard's paper in the Proceedings of the American Oriental Society, October, 1889, entitled Reminiscences of Egypt in Doric Architecture. On the general subject, see Hommel, Babylonien, ch. i, and Meyer, Alterthum, i, S 199. So, too, general history has come in, illustrating the unknown from the known: the development of man in the prehistoric period from his development within historic times. Nothing is more evident from history than the fact that weaker bodies of men driven out by stronger do not necessarily relapse into barbarism, but frequently rise, even under the most unfavourable circumstances, to a civilization equal or superior to that from which they have been banished. Out of very many examples showing this law of upward development, a few may be taken as typical. The Slavs, who sank so low under the pressure of stronger races that they gave the modern world a new word to express the most hopeless servitude, have developed powerful civilizations peculiar to themselves; the barbarian tribes who ages ago took refuge amid the sand-banks and morasses of Holland, have developed one of the world's leading centres of civilization; the wretched peasants who about the fifth century took refuge from invading hordes among the lagoons and mud banks of Venetia,