J. D. Dana—'Kames” of the Connecticut River Valley. 461 
underneath. Above the top of this section there is a nearly 
even terrace- dap 160-170 feet above the river, or 493 to 508 
above mean-tide level. This plain rises to the southwest to a 
maximum height (not observed by Upham) of 570 feet. The 
material is fine sand and sandy loam. But along the_river- 
ward border of this terrace plain, where it is lowest{(493#feet), 
stands a steep narrow ridge, 50 to 65 feet high, which, judgin 
from the stones of its surface, is made chiefly of beds of cob- 
ue -stone gravel. The top is 546 feet (Upham),“above; the 
“The cobble-stone character of this ridge and its position 
make it eminently “‘kame’-like. But the evidence from the 
section described, as well as from the plain around, is directly 
opposed to the idea that it is the top of a buried gravel ridge, 
existing there before the terrace material was deposited. 
In the section, the obvious facts are: that these upper cobble- 
stone beds—those of the top ridge—are underlaid, first by layers 
of sand and fine gravel, and then below by alternations of coarser 
beds ; that all the beds are horizontal rantead of arched ; that they 
diminish rapidly in coarseness westward, or up hite River, 
showing this even in the first 100 yards, and less rapidly south- 
ward or down the Connecticut, the coarsest deposits being at 
the angle in ihe terrace formation between the two streams. 
All the beds are evidently those of the terrace-formation, and 
the cobble-stone ridge at top is the youngest instead. of the 
oldest. 
e northern “kame,” or that north of White River, com- 
* 
As 
tion is exposed to view at its southwest angle, facing White 
River, exhibiting very similar features to those presented by 
the northern kame near the railroad. It is horizontally bedded 
throughout, and the coarsest beds are below: and some of the 
rounded stones from the beds are two feet 1 in diameter. 
the beds are of coarse and fine Been and increasingly finer to 
the top of the terrace, 510 feet (Upham) above mean tide. 
Below 15 feet above the railroad the beds are conceale 
On the top of the high terrace, along its riverward ‘border. 
some spots of sable stone gravel occur, but no distinct gravel 
ridge like that of the southern kame. 
he interior of this “kame” is fortunately more or less per- 
fectly exposed to view in both longitudinal and transverse sec- 
tions ; and it is remarkable that these sections have nothing 
“kame ”-like in them 
The ee oe or north and south section extends along a 
