280 H.C. Lewis—Supposed Glaciation in Pennsylvania, 
driving, the valleys both north and south of the mountain for 
many miles in each direction. I have also carefully examined 
the sides and ledges of the mountain and, thanks to careful 
instructions and a diagram given me by Professor Lesley, 
believe that I have succeeded in finding the very spot where 
Professors Lesley and Desor saw the striz. 
found no moraines, no till, not a single transported or 
scratched bowlder, no kames or terraces, and no strizw. There 
was not a single sign of glaciation, and both mountains and 
valleys were in all respects similar to other non-glaciated . 
mountain regions about the anthracite coal basins. = 
The mountain is formed mainly of Pottsville conglomerate 
(No. XII), a coarse white conglomerate with often large peb- 
bles, and here characterized by numerous impressions of an 
unusually large calamite, probably Calamites dubius Artis 
( mites bistriatus Le 
sions of these calamites occur on the very ledge near gel : 
of the mountain south of Mount Carmel which was suppo 
to be glaciated. Wie 
2.) On the summit of Peters (Fourth) Mountain, where the 
Dauphin and Halifax turnpike crosses the sharp crest, is a small 
bedding. Unlike a glaciated surface, the rock forms projer 
o “i 
cleavage planes, on several of which the slickensides wire 
The slickensides do not make continuous lines nor occur ose 
single plane, thus differing from glacial strie. Nor do ey 
occur only on the surface, but run in between blocks of 83% . 
