278 «H.C. Lewis—Supposed Glaciation in Pennsylvania, 
“ The only explanation I can give of this, is, that it is a moraine 
formed by the esters after it had receded through the gap, pos- 
atte a lateral moral 
He also believes that the Wind Gap shows evidence of the 
passage of a glacier. 4 
7.) In his second paper‘ entitled ‘On Glacial Deposits in 
West Philadelphia,” he describes a gravel opening between 
Spruce and Walnut streets west of 45th street in West 
Philadelphia, where, having found bowlders of Oneida con- 
glomerate, Medina sandstone, Triassic shales, and probably 
Clinton and Oriskany, as also a few pieces of trap, he says: 
“From oy ere evidences I have concluded that this belt of q 
drift dep o other than a glacial moraine formed by the — 
Schuylkill plies receding from the site of the city.” a 
He states also: _ 
“that the surface of the gneiss where laid bare is comparatively a 
smooth, and shows evidence of hav ving been Ha a though so | 
soft as not to retain the marks of glaciation 
(8.) Prof. F. Prime, Jr., has stated* that 
“A glacial moraine may be traced from the Wind Gap in the 
Kittatinny Mountain through iC aga aay Bangor reg Wil 
liamsburg to Portland on the tincag ep rive . West of the — 
ind Gap no glacial moraine can be o far as the "Lehigh - 
river. That it existed, however, theta’ is : little doubt, and was 
probably washed ind ag ain by aqueous action, to be re-de epost osited 
as modified drift,” 
(9.) Again he says in the same communication : 
‘‘Another glacial moraine also exists in the Saucon Valley 
south of the Lehigh ; it extends from Friedensville almost to Bin- 
gen station on the North Pennsylvania railroad.” 
(10.) In his report on Lehigh County,° the same geologist 
states that, “ distinct evidences were obtained of glacial de- 
posits,” and records his conviction that 
“the spree coming through the gaps of mpeg 2 banger : 
and in places riding over its crest, came 
4Proc, Amer. Philos. Soc., xiv, 633. ’Proc, Amer. Philos. Soc., xviii, 85. 
6 Report DD, pp. 75-77, 1878. 
