24:8 



MAN AND THE GLACIAL PERIOD. 



the similarity between the terrace at Trenton and numer- 

 ous terraces which I had attributed to the Glacial age in 



&i 



/. X 



Fig. 68.— Argillite implement found by Dr. C. C Abbott, March, 1879, at A. K. 

 Rowan's farm, Trenton, New Jersey, in gravel sixteen feet from surface : a, 

 face view; b, side view (No. 11,286) (Putnam). 



Ohio and the other States. It adds much to the interest 

 of subsequent discoveries to note that in 1884, in my re- 

 port to the Western Eeserve Historical Society upon the 

 glacial boundary of Ohio, I wrote as follows : 



" The gravel in which they [Dr. Abbott's implements] 

 are found is glacial gravel deposited upon the banks of the 

 Delaware when, during the last stages of the Glacial pe- 

 riod, the river was swollen with vast floods of water from 

 the melting ice. Man was on this continent at that period 



