32 GEOLOGY AND HISTORY 



his observations in the American Journal of Anthropo- 

 logy and elsewhere. 1 



One of the most widely-known examples was that 

 of Trenton, on the Delaware, where there was a bed 

 of gravel alleged to be pleistocene, and which seemed 

 to contain enough of 'palaeolithic' implements to 



SECTION AT TRENTON, ON THE DELAWARE, SHOWING THE RELA- 

 TION OF THE STONE IMPLEMENTS TO THE GLACIAL (?) GRAVELS 



(after Holmes) 



stock all the museums in the world. The evidence 

 of age was not satisfactory from a geological point 

 of view, and Holmes, with the aid of a deep exca- 

 vation made for a city sewer, has shown that the 

 supposed implements do not belong to the undis- 

 turbed gravel, but merely to a talus of loose debris 



1 Science , November 1892 ; Journal of Geology, 1893. 



