328 J. D. Dana on the position and height of the 
the preceding elevations, as well as the last, being in preparation 
for the Glacial era. 
been greater in vertical change of level, and also vastly wider 
in its limits from north to south; and moreover such an event 
would have been out of joint with the times, tending to amelio- 
tate instead of giving arctic vigor to the climate. And further, 
as I pointed out many years since, (this Journal, II, vii, 379, 
1849,) there is independent proof of a high-latitude elevation 
of the continent during the Glacial era, in the fact that the drift 
fiords occupying valleys 
hay if 
those of Maine,—mostly 100 to 150 feet--we thus learn that 
the land along this coast was at least 150 feet higher than now, 
and probably 200 feet. Other facts lead us to believe, as stated 
by the writer in his paper on the Geology of the New Haven 
region, (Mem. Acad. Conn. i, p. 45,) that southern 
land was 100 to 150 feet above its present level. 
Bay would have been greatly 
River lengthened seaward ove 
which would make it 6,500 to 7,000 f 
was situated to the north 
If the Icy Plateau, instead of being along the watershed, 
Shee eG CRE nae ae 
