MAN'S FIRST APPEARANCE 1651 



drift implements will^not help us to fix the exact re- 

 lation of man to these changes, because they were in 

 Britain before as well as after the submergence, and 

 were living throughout in those parts of Europe 

 which were not submerged. It can only be done in 

 areas where the submergence is clearly defined. At 

 Salisbury, for instance, the River-drift hunter may 

 have lived either before, during, or after the south- 

 ern counties became an island. When, however, he 

 hunted the woolly and leptorhine rhinoceros, the 

 mammoth, and the horse, in the neighborhood of 

 Brighton, he looked down upon a broad expanse of 

 sea, in the spring flecked with small icebergs such as 

 those which dropped their burdens in Brackelsham 

 Bay. At Abbeville, too, he hunted the mammoth, 

 reindeer, and horse down to the mouth of the Somme 

 on the shore of the glacial sea. The evidence is 

 equally clear that the River-drift hunter followed the 

 chase in Britain after it had emerged from beneath 

 the waters of the glacial sea, from the fact that the 

 river deposits in which his implements occur either 

 rest upon the glacial clays, or are composed of frag- 

 ments derived from them, as in the oft-quoted case of 

 Hoxne and Bedford. Further, it is very probable 

 that he may have wandered close up to the edge of the 

 glaciers then covering the higher hills of Wales and 

 the Pennine chain. The severity of the climate in 

 winter at this time in Britain is proved, not merely 

 by the presence of the Arctic animals, but by the nu- 

 merous ice-borne blocks in the river gravels dropped 

 in the spring after the break-up of the frosts. 



The River-drift man is proved, by the implements 



