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POPULAR SCIENCE REVIEW. 
savage would not cast away his well-formed implements with the 
refuse chips. They show no additional workmanship beyond the 
ordinary fracture of the flint, and bear no evidence of use. In 
North Devon the flakes are found over an explored area of 
200 square miles, and surely it cannot be said that a few 
scattered savages required a manufactory for weapons two hun- 
dred times as large as that requisite for the British navy at the 
magnificent dockyard of Keyham. 
The flakes are further found on precipitous cliffs overhanging 
the Atlantic, where a savage could scarce find foothold to make 
them ; and on solitary islets at Scilly where man never could 
have subsisted in the hunter state. 
That some of the flakes have been selected and used by man 
both archaeology and history testify. 
From the South Downs, in addition to three polished celts, I 
obtained a large flake which was ground to a cutting edge in the 
same manner as the celts. And the ceremony which placed 
flint knives in the tomb with Joshua, has been many times since 
repeated at the barrow interments on the British hills. 
