Manchester Memoirs, Vol. Ixv. (192 1), No. 13 



23 



part, but as tending to modify the distribution in certain 

 circumstances. Man has impressed indelibly his personality 

 upon the face of the earth. He has defied climates such as 

 that of West Africa, on account of the gold that exists there 

 (9, 181 e.s.); he has frozen in Siberia for the same reason (17, 

 vol. ii) ; he has created great civilisations in the jungles of 

 Cambodia ; he climbed the inhospitable hills of New Guinea 



• RiVER-DRiFT IMPLEMENTS 



^^ chalk Boundary 



Sketch Map No. 6, showing the geographical relationship between the 

 distribution of River Drift implements and the Chalk and subsequent 

 geological formations. 



