A Book-Lover's Holidays in the Open

To say that progress goes on and has gone on at unequal speed in different continents, so far as human society is concerned, is so self-evident as to be trite. Yet, after all, we hardly visualize even this fact to ourselves; and we laymen, at least, often either disregard or else frankly forget the further fact that this statement is equally true as regards the prehistory of mankind and as regards the paleontological history of the great beasts with which he has been associated on the different continents during the last two or three hundred thousand years. In history, a given century may on one continent mean what on another continent was meant by a century that came a thousand years before or a thousand years later. In prehistory and paleontology there is the same geographical difference as regards the rapidity of development in time.

The Sudan under the Mahdi at the end of the nineteenth century was in religious, industrial, and social life, in fact in everything except mere time, part of the evil Mohammedan world of the seventh century. It had no relation to the contemporary body politic of humanity except that of being a plague-spot. The Tasmanians, Bushmen, and Eskimo of the eighteenth century had nothing in common with the Europeans of their day. Their kinship, physical and cultural, was with certain races of Palaeolithic Europeans and Asiatics fifty or a hundred thousand years back.