648 



THE ICE AGE IN NORTH AMERICA. 



the railroads for ballast. Mr. Mills saw the implement as 

 it was projecting from the undisturbed gravel in the fresh 

 exposure, and took it out with his own hands. The surface 

 of the glacial terrace is here thirty-five feet above the 

 prefent high-water mark of the river, and, as already said, 

 the implement was found fifteen feet below the surface. 

 The terrace is one which characterizes the Tuscarawas 

 River everywhere below the glacial boundary, and the 

 illustration upon page 324 might well have been taken 

 from this very spot. 



Fig. 170— Face View 

 of the Implement 



Fig. 171— Face View. 



Fig. 172— Diagonal View 

 of Sharpened Edge. 



In 1892 another important discovery was made in the upper 

 terrace of the Ohio River at Brilliant, Ohio. This was a well 

 fashioned flint implement one inch long which was found in 

 place beneath eight feet of cross bedded sand and gravel where 

 there had been no chance for secondary deposition or a land 

 slip. The surface of the terrace was nearly uniform for two 

 miles in length and a quarter of a mile in width at a height 

 of 80 feet above low water, and fifty feet above the present 

 high water mark. Excavations near by to a depth of 43 feet 

 show continuous cross bedded stratification of sand and gravel 

 with clay in small quantities. Mr. Sam Huston, the County 

 Surveyor, and a well known geological collector of highest 



