626 



THE ICE AGE IN NORTH AMERICA. 



much as twelve feet below the surface. 



Fig. 159. — Face view of argillite implement., found by Dr. C. C. 

 Abbott, in 1876, at Trenton, New Jersey, in gravel, three 

 feet from face of bluff, and twenty-two feet from the sur- 

 face (No. 10,985). (Putnam.)* 



Since that time he 

 has continued to 

 make similar 

 discoveries at 

 various inter- 

 vals. In 1888 

 he had already 

 found four hun- 

 dred implements 

 of the palaeolith- 

 ic type at Tren- 

 ton, sixty of 

 which had been 

 taken from re- 

 corded depths in 

 the gravel, two 

 hundred and fif- 

 ty from the talus 

 at the bluff fac- 

 ing the river, and 

 the remainder 

 from the surface, 

 or derived from 

 collectors who 

 did not record 

 the positions 

 or circumstances 

 under which 

 they were found. 

 In 1878 Profess- 

 or J. D. Whit- 



* This cut, together with the following ones credited to him, Professor F. 

 W. Putnam has kindly furnished me, for use in advance of publication, from 

 his elaborate report upon the palaeolithic implements in the Peabody Museum of 

 American Archaeology and Ethnology, Cambridge, Mass. The numbers in paren- 

 theses are those on the implements, and correspond to the catalogue of the 

 museum. The figures are natural size. 



