MODIFIED DRIFT ALONG CONNECTICUT RIVER. 



45 



of gravel often forms the escarpment of a high plain, with the river flow- 

 ing at its base. On this account we find the upper terrace occupying a 

 greater width along the course of the kame than it averages elsewhere in 

 this valley. 



In calling this kame continuous from Lyme to Windsor, it is not meant 

 to imply that it is now entire, since it has been frequently cut through 

 and considerable portions swept away by the main river and by tributary 



THETFORD. 



NORWICH. 

 Pompanoosuc 



HANOVER. S^: 



ri LEBANON, 



g A Mink Con 



P^ K Br. r 



HARTFORD. 

 :iit \Vhite River 



falls. 



HARTFORD. 



White river. ^, Cunn.R. 



Mascomy 



LEBANON. 



N.r-T^ 



HARTLAND. 



o* Mouth of 



S Quechee R. Conn.R. 



HARTLAND. 



Plainfield. Cornish. WINDSOR. 

 Conn.R. Conn.R. ^ 5 



Fig. 12. — Profile of the Kame of Connecticut Valley (24 miles; vertical 

 scale, I inch=8oo feet). 



The dotted line marks a height 300 feet above the sea, and the line next above represents the river. 



streams ; but that so much of it remains as to make it certain that it 

 originally formed an unbroken ridge. The portions now separated by 

 gaps always lie in a continuous line. 



The first evidence that we find of this ridge is a coarse gravel deposit 

 on the south side of a hill in Lyme, one mile north of the mouth of 

 Grant's brook. For about one mile south from this point it has been 

 carried away by the river. It then commences about one third of a 

 mile south-west of the railroad station in Thetford, and thence extends 

 southward with the profile shown in Fig. 12. It is nearly straight four 

 miles to the mouth of Pompanoosuc river, which has cut through it, but 



