SPIRIT OF GOOD BOOKS'. 



363 



" The manner in which they have been fashioned appears to have been by 

 blows from a ronnded pebble mounted as a hammer, administered directly upon 

 the edge of the implements, so as to strike off flakes on either side. At all 

 events I have by this means reproduced some of the forms in flint, and the 

 edges of the implement thus made present precisely the same character of 

 fracture as those from the drift, 



Oval-shaped flint implement from the valley of the Somme. 



" In instances where (either from having been left accidently unfinished, or 

 from never having been intended to be ground) the weapons of the Stone 

 period have remained in their rough-hewn state, it will be observed that, with 

 very few exceptions, they are chipped out with a greater nicety and accuracy, 



