THE ORIGIN AND ANTIQUITY OF MAN 79 



plement is well defined although the scars left by chip- 

 ping the two faces are still large and somewhat irregular. 

 It is the regularity and the fineness of the chipping which 



From Birkner, "Der Diluviale Mensch in Europa." 



FIGURE 31. Flint Implements of the Mousterian Epoch. 



distinguishes the Acheulian from the Chellean. Indeed, 

 it is so skilfully done as virtually to eliminate the zig- 

 zag nature of the edge formed by the meeting of the two 

 chipped faces. 35 The men of the old river drift must 

 have had strong arms and skilful fingers, for it must have 



as MacCurdy, G. G. "The Caveman as Artist," Century, July, 1912, vol. 

 Ixxxiv., p. 440. 



