210 Glaciation of Mountai?is, etc. — W. Uj^ham. 
Supplementing the observations of the Geological Survey of 
Vermont, Mr. Edward Hungerford published in 1868 a valua- 
ble paper on the glaciation of the Green mountains/ from 
which most of the following notes are derived, their order 
being from north to south. Stria? on the summit of Jay- 
Peak, 4,018 feet above the sea, bear S. 40° E. Very large 
transported bowlders occur on the top of Mt. Mansfield, with 
strias bearing S. 23° to 28° E. This mountain, the highest in 
the state, attains the elevation of 4,430 feet. Masses of quartz 
contained in the mica schist of the top of Camel's Hump, 
4,088 feet in hight, show fine lines of striation, noted in three 
places, S. 10° W., the same with variation to due S., and S. 
35° E. On the northeast side, about 700 feet below the sum- 
mit, in the path to Ridley's station, stride bear S. E. and S. S. 
E. It is also to be remarked that the rounded northwest side 
of Camel's Hump, and its precipitous cliff on the south and 
southeast, afford evidence of glacial erosion. Killington 
Peak, 4,221 feet high, has similar rounded outlines, forming a 
"well-defined northern stoss side;" and Mr. Hungerford ob- 
served numerous small bowlders of foreign rock within twenty 
feet of the highest point. He concludes that all these sum- 
mits, the highest in Vermont, were enveloped by the ice-sheet. 
The glacial current crossed the Green mountain range from 
northwest to southeast and south. It transported bowlders of 
the Burlington red sandstone across the range near Camel's 
Hump, where they were carried upward 3,000 feet above their 
source, and deposited them in the Quechee valley, near the 
Connecticut river, and in Hanover, N, H., about sixty miles 
from their starting-point. 
Little is known of the glaciation of the Adirondacks ; hence 
there is a rich harvest sometime to be reaped in that region. 
The group, consisting of Archasan granites, gneiss and schists, 
culminates in Mt. Marcy, or Tahawus (the "Cleaver of the 
Clouds"), 5,344 feet above the sea; and Mt. Mclntyre, at 
5,113 feet, is next in elevation. Mr. Verplank Colvin, in 
charge of the Adirondack survey, states that the summit of 
Marcy is contrasted with the other high peaks in its being 
destitute of glacial drift; but its embossed and rounded 
ledges, as he observes, indicate glacial erosion there, although 
* American Journal of Science, II., vol. xlv. 
