58 ICE RECESSION IN NEW ENGLAND 



6601-6607. — Sandy bottom varves, somewhat uncertain. 



6608-6628. — Comparatively good, but sandy. 



6629-6641. — Good, silty. 



6642-6662. — Good. The considerable thicknesses of varves 

 6643 and 6646, at locality 63, may be due to the 

 fact that they were deposited rather close to the 

 ice edge. 



6663-6800. — Good. The different measurements correspond very 

 well. 

 6687 is silty and remarkably thick and perhaps represents 



a drainage. 

 6694 is questionable. 

 67 1 2-67 1 5 consist of coarse silt and, no doubt, mark a 



drainage. 

 6779, at locality 65, contains sand and silt and is 2>H inches 

 (9.5 cm.) thick. It may represent a small drainage. 



6801-6903. — The curves (both, 19 "Yt.-N. H., M PI. V) are some- 

 what uncertain both regarding thicknesses and 

 number of varves. At locality 63 the varves are 

 silty' and sandy and have thin winter layers. They 

 are thicker than at points 66 and 67. The reasons 

 for this may be that they were deposited in shallow 

 water and that several side valleys, of which those 

 now drained by the White River and Mascoma 

 River may be mentioned, join the main valley 

 south of localities 66 and 67. The section at locality 

 66 is relatively good. At locality 67 the varves are 

 wavy and have lenses of sand. 

 6806-6810 are drainage varves. In the curve the thick- 

 nesses of the varves at locality 63 are given. 

 Varves 6S07 and 6808 consist of sand and silt. The 

 thicknesses at locality 67 are: 1% inches (4.5 cm.), 

 5 feet 7 inches (1.7 m.) — 2 feet 3^ inches sand + 3 

 feet 2>H inches silt and clay (0.7+ 1.0 m.) — ; 

 n>£ feet (3.5 m.) — 4 feet 7 inches sand + 6 feet 

 11 inches silt and clay (14111.^2.1 m.) — ; 1 foot 



