324 J. D. Dana on the position and height of the 
ho 
Art. XL.—On the position and height of the elevated Plateau in 
which the Glacier of New England, in the Glacial era, had us 
origin ; by JAMES D. DANA. 
E, 
-_ 
a 
ad 
g. 
5 
cent 
ce 
S 
% 
= 
h 
or 
= 
_@ 
ito 
P= 
a 
£. 
‘S) 
5 
$s 
m 
S 
et 
= 
oO 
© 
& 
a. 
° 
ot 
® 
vey, that the glacial scratches on Camel’s Hump, Mt. Mans 
field and Jay’s Peak, three of the high summits of the Green 
Mountains in the northern two-thirds of Vermont, have 4 
course of about S. 50° E.* In the White Mountains, 70 miles 
to the south of east (S. 75° E.), the direction of the scratches 
. 
is, as | am informed by Prof. 
the north side of Mt. Clinton, 4430 feet high, (one of the White 
Mountain series of summits about 17 miles west of Mt. Wash- 
ese 
could not have been made with the land of North America : 
its present level. Elevated land must have existed to the er 2 
if they were the work of glaciers. Moreover, these scrate 
* According to the Vermont Geological Report the direction of the scratches © 
Camel’s Hump is 8. 50° E. (S. 40° E., compass), on Jay’s Peak, S. 56° E., SS 
Mt. Mansfield, situated between the two, 8. 30° E., 55° E., S. 58° E., at diffe 
poin' ; 
_ + Prof. Hitchcock observed also the course S. 24° E. near the Lake of the ome 
but it was not common; also, in the saddle between Mt. Pleasant and Mt. Frap 
Mountain 
and that there were variations from this course due to the lay of the land. 
