J. D. Dana on a Mohawk-valley Glacier. 247 
miles north of Cherry Valley; and there is one long scratch in 
the cellar of the Cherry Valiey Academy (D). 
“Neither the scratches of the road-side, on the way to Fort 
Plain, nor that under the Academy, correspond with the general 
course of the valley, or even with its particular course at the 
locality of the seratches. They seem in every case to run some- 
what into the hill-side. 
“On the top of ‘Burned Hill,’ (B) on the west side of Cherry 
Valley, 400 feet above it, and 1800 feet above the sea-level, the 
rocky surface, here the Hamilton sandstone, wherever laid bare, 
Over an area of several hundred acres, is more or Jess planed and 
scratched, and the scratches are of the easterly system, the course 
being east-by-north. Half a mile to a mile below Cherry Valley 
(F), there is another good locality of the east-by-north scratches. 
These easterly scratches have no apparent connection with any 
valley in the region. 
“ About a mile above Cobbles-kill Centre, a few miles east of 
Cherry Valley, on the Sharon road, there are scratches on the 
the Schoharie, and not into the Susquehannah tributaries; but 
the place where these scratches occur is still near the summit of 
the plateau. All the above courses are compass-courses, requir- 
Mohawk valley; while the north-and-south system conforms to 
© slope of the Susquehannah tributaries, though possibly con- 
hected with a grander movement reaching from the far not 
“cross the Mohawk valley. eg 
The Mohawk valley needs to be studied for a full elucidation 
of the Subject. But there are some confirmatory facts stated by 
“40uxem, who, as long ago as 1842, announced essentially 
‘ame general conclusion, as the result of his observations. 
* See New York Geological Report, Part III, comprising the Survey of the Third 
teal District, by Lardner Vanuxem, 4to, 1842, p. 245. 
