GLACIAL EROSION AND TRANSPORTATION. 247 



another, of equal weight, may be found in the museum of the 

 Boston Society of Natural History.* Professor Hitchcock 

 writes me that while none of the very large bowlders in New 

 Hampshire have been lifted up very much, it is safe to say 

 that every New England mountain has bowlders on its sum- 

 mit that have been brought there by the ice from at least as 

 great a distance as from its immediate base. 



Describing a cut in till, forty feet deep, near the village 

 of Queechee, Vt., on the Connecticut Eiver, Professor 

 Hitchcock says it is full of small-sized glaciated stones, 

 cemented together by thick bowlder clay. Every stone is 

 striated. There are great numbers of the Burlington (Yt.) 

 red sandstone, "which must have traveled from over the 

 Green Mountains, over sixty miles, and have been raised 

 over au acclivity of 3,000 feet altitude." f 



Professor A. S. Packard, Jr., reports % that, at the height 

 of about 4,000 feet above the sea, on Mount Katahdin, Me., 

 " is a large mass of glacial moraine matter which has escaped 

 denudation, and this incloses frequent rounded and polished 

 bowlders of fossils of the same species of Silurian shells, and 

 of the same silicious slates, as are found in situ a few miles 

 northwest, on Lakes Webster and Telos. . . . The parent 

 beds are but about twelve miles distant," and, according to 

 Mr. Upham, must be 3,000 feet lower. 



One of the clearest instances of the elevation of bowlders 

 in the ice is the one already alluded to, # in the vicinity of 

 the Delaware Water-Gap, on the summit of Kittatinnv 

 Mountain. This summit consists of Medina sandstone, and 

 is about 1,500 feet above tide. Yet Professor Lewis found 

 numerous bowlders of Helderberg limestone upon it, which 

 he thinks must have come from Godfrey's Ridge, in Cherry 

 Yalley, only a few miles to the north, and 1,200 feet lower. 



* For particulars concerning these bowlders, see Hitchcock, " New Hamp- 

 shire Geological Report," vol. iii, pp. 204, 207, 272. 



f " New Hampshire Geological Report," vol. iii, p. 262. 



X " Memoirs of the Boston Society of Natural History," vol. i, p. 239. 



# See cut above, p. 196. 



