DRIFT DIVISION. 
199 
Examples of scratched and furrowed rocks in the First Geological District of New-York, 
and near its boundary in Massachusetts and Connecticut. 
No. of 
examples. 
Name of oh- 
Kind of rock 
smoothed and 
scratched. 
County in which 
the locality was 
Direction of the 
scratches. 
Reference to 
works in which 
the observations 
LOCALITIES. 
Remarks. 
1 
Mather. 
Coarselycrys- 
Richmond... 
Not noted .. 
m*vol.i,p.l92 
At the “ Granite quarries,” as they have been called, 
Smoothed, but rarely 
Several. 
De Kay. 
talline trap 
Gneiss . 
New-York .. 
NNW&SSE 
Am. Jour. Sc. 
one or one and a half miles south of Shooter’s island, 
and two to four miles south-southwest of Tompkins- 
ville. 
Several places in the city of New-York. 
scratched. 
5 
Several. 
Mather. 
Gneiss, mica- 
do 
N25° W... 
vol.l6,p.357 
m. i, p. 114. 
A few rods southeast of the intersection of the Third 
The strata for some dis¬ 
5 
2 
Gale. 
ceous 
Granite. • • • • 
do 
N480 W... 
N45<> W... 
N Y Geol 
avenue and Pftieth-street. The rock ranges N. 25° 
E. Dips at a high angle to the N. 70° W. 
tance to the north and 
south of this place dip 
to the north and north¬ 
west from 30° to 80°; 
but near Seventy- 
seventh-street, the rock 
resumes its dip to the 
east and southeast. 
Most of the localities are 
on the top and north¬ 
west sides of the hills. 
On top, all are N. 45° 
39 
do . 
Gneiss and 
do 
Rep. for 1839 
p. 198. 
do 
On the middle parts of the island, between the city and 
7 
do . 
mica slate 
do 
do . .. 
N350 W... 
do 
Harlem valley, in the line of the Eighth avenue from 
Sixtieth to One-hundred-and-fifth-street. 
W. The few on the 
east sides of the hills 
5 
do . 
do 
do 
N 25° W to 
do 
are from N. 25°*to N. 
7 
do . 
do 
do 
N35° W 
N 35° W to 
do 
35° W. Those on the 
west side are N. 35° W. 
1 
Briggs. 
Hornblendic 
Westchester. 
N45° W 
Not noted, va¬ 
m. u, p. 64. 
One mile north of Sodom in North-Salem. 
Many, 
do . 
gneiss 
Gneiss and 
do 
rious direc¬ 
tions 
Not noted... 
m. ii, p. 71. 
Road from Greenwich, Connecticut, to New-York, in 
Very striking and obvi¬ 
say 8 
Cassels. 
hornblendic 
gneiss 
Gneiss . 
do 
N15° W... 
m. vii, p. 23. 
Rye, New-Rochelle, Westfarms and Westchester. 
Almost everywhere, and particularly on the highest 
ous. 
8 
Mather. 
Talcose slate 
do 
N 20° W to 
m. vi, p. 72. 
hills where the rocks are freshly uncovered by taking 
off the earth. 
Gallows hill on the west side and top, four to four and 
On the road very distinct. 
1 
Cassels. 
Gneiss . 
do 
N30° W 
W of N and! 
m. vii, p. 41. 
a half miles north of Peekskill. 
On the post-road, two miles southeast of Verplanck’s 
Line of bearing N. 20° E. 
1 
do . 
Hornblendic 
do 
E of S 
Not noted .. 
m. vii, p. 42. 
point. Deeply furrowed. 
Near the south dock of Peekskill, on the east side of 
Deeply and coarsely fur¬ 
1 
Briggs. 
rock 
Mica slate .. 
Putnam. 
N 10° W... 
m. ii, p. 226. 
the road. 
Patterson, half a mile from the line of Connecticut, on. 
rowed. 
Strike of rocks N.E. and 
1 
do . 
do 
do . 
N15°W... 
m. ii, p. 226. 
the road from Danbury to Poughkeepsie. 
Patterson, three quarters of a mite southeast of Wing’s 
S.W. DiptoS.E. 
1 
do . 
do 
do . 
N15° W... 
m. ii, p. 227. 
corners, same road. 
Patterson, one and a half miles southeast of Wing’s 
Several, 
say 2 
1 
Mather. 
Gneiss. 
Litchfield' co. 
N 20° to 25° 
m. iii, p. 23. 
corners, same road. 
Both east and west of the village of Norfolk, at the 
heads of the two valleys between which this village 
stands. Norfolk stands in an elevated shallow val¬ 
ley on the mountain between two transverse valleys 
at their heads, leading west and southeast. 
Canaan mountain in Connecticut. 
Hitchcock .. 
Mica slate .. 
do 
W 
Few degs. W 
Hitchcock’s 
ofN&EofS 
Geol. Report 
Mass. 
- m. refers to the Manuscript Diary of the Geological Survey of the First District of New-York. 
