202 
GEOLOGY OF THE FIRST DISTRICT. 
LOCALITIES. 
Several, 
say 8 
Merrick ... 
Hitchcock . 
Hard grit and 
slates 
Argillaceous 
slate 
Thompson . 
do . 
Calciferous 
sandstone 
Hornblende 
rock 
Gneiss .... 
do . 
Imperfect 
chloritic slate 
a metamor- 
phic rock 
Gneiss and 
granite 
Trap rocks .. 
Slate and grey 
grits 
Orange . 
Not noted.. 
NI50W ... 
Not noted 
N 750 E . 
N 60 OW 
Not noted 
do 
N 550 E . 
Not noted 
do 
N10»tol5E< 
r, p. 134. 
Hitchcock’s 
Geology of 
Mass. p. 388 
a. vii, p. 127. 
Mather on di- 
luvion, 1835, 
Am. Jour. Sc. 
vol.23,p245 
On the road from Redhook to Miller’s in Taghkanic, 
thence to Churchtown and Claverack. 
Copake, west side of Taconic mountain. ' 
Western slope of Taconic mountain, near top, on the Very distinct, and extend- 
west side, the whole breadth of Massachusetts near ing down the slope some 
the New-York line. hundreds of feet. 
One and a half miles south of Salem, on the northern 
declivity of a high hill. 
Near the church, on the summit of the high hill between 
Easton and Cambridge. 
On very elevated ground in the summit of a high trans¬ 
verse valley, about one mile north from Easton. 
One and a half miles from Easton, on the road to Bus- 
kirk’s bridge. 
Near the falls of Wood creek, one and a half miles 
northwest of Fort Ann. 
In a small transverse valley, half a mile east of Fort 
Ann. 
On the road from Fort Ann to Comstock’s landing. 
On the road from Comstock’s landing to Whitehall. 
One or two miles south of Negro point in Putnam, 
the shore of a point of Lake Champlain. The rocks 
are much scratched, and overlaid by beds of scratched 
U'mestone pebbles intermixed with clay, and this depo¬ 
sit is overlaid by the quaternary clay beds. 
On the same point as above, and shows not only slight 
scratches, but depressions to the southwest of hard 
points of the rock as if gouged out, and showing the 
action of water flowing a long time in one direction. 
On Mr. Goulard’s farm at the lime kiln in the north 
part of Putnam, within a few rods of the granitic 
rocks in place, and covered by the clays of the qua¬ 
ternary, elevated about one hundred and fifty feet 
above Lake Champlain, and three-quarters of a mile 
west of the shore. 
On a highly inclined surface of the rock, on the east 
side of the valley, about one and a half miles north¬ 
east of Cambridge. 
On the top of the mountain between Grassy point on 
the Hudson, and McFarlan’s iron works in Smith’s 
clove a little west of the turnpike gate, and on several 
ridges farther west. 
On the road leading south from Haverstraw . __ 
mountains of trap, and in returning between the High 
Torn and Little Torn. All these gorges are water- 
worn and abraded, where uncovered of the soil that 
has protected the rock from decomposition or slow dis¬ 
integration. 
On the bank of the Hudson, between Cornwall and 
Newburgh, overlaid by scratched pebbles of slate and 
limestone, intermixed with boulders of grey grit and 
primitive rocks, and this latter deposit overlaid by the 
clay and sand beds of the quaternary. 
At West-Point, where the rocks were freshly uncovered, 
many places were observed where the rocks had been 
ground off, and rubbed smooth. Where they are 
posed to the weather, they are rough from disintef 
tion in a slight degree. 
Twelve or fourteen miles west of Newburgh. 
* These grits belong to the Old Red sandstone, or CatskiU Division of rocks, and are designated by the letters C. D. 
