350 J. C0. Smock—Thickness of the Continental Glacier. 
continental ice-sheet of the glacial epoch was not uniform 
The rise was probably steep near the margin. And the hig& 
glaciated points near the line of the terminal moraine indicate 
that such was the fact. Thus, near Feltville and Summit, the 
drift-covered Springfield Mountain, which is about a mile north 
of the line, is nearly 600 feet high. 
The high drift-hills near Mount Hope (960 feet) show a great 
thickness near the margin. The height of Schooleys Mountain 
drift has been referred to, and the thickness of the ice in the 
Musconetcong Valley. Northward the angle of the slope 
diminished and the glacier surface approximated to a great. 
level plain. The distance between the high, southwestern 
glacier. So that we have no outstanding peaks farther north. 
The great glacier appears to have sivaret’ the whole of New 
England and northern New York, and to have filled the Hud- 
son Valley to a depth of at least 3000 feet, as far south as the 
Catskills, burying the Berkshire: Hills, the Shawangunk Moun- 
tain range, and the Highlands of southern New York, in ts 
icy folds. Above it stood the higher peaks of the Catskills 
and the summits of the Moosic Highlands as isolated land- 
marks—or islands in the great Mer de Glace. 
