200 
GEOLOGY OF THE FIRST DISTRICT. 
oothed and 
Many, 
Briggs* 
do .... 
do ..., 
do ..,. 
do .... 
Mather... 
do 
Hitchcock 
Merrick* . 
Mather... 
Cassels *^. 
do .... 
Mather... 
Slate ... 
do .... 
do .... 
do .... 
do .... 
Bluish hard 
grit rock 
Slate.. 
Gneiss ..... 
Not noted ., 
Slate . 
Mica slate ., 
do 
Hard grey grit 
NW and SE 
NI50E.... 
m. ii, p. 51. 
. ii, p. 256. 
. ii, p. 45. 
Not noted, ge¬ 
nerally about 
N 150 to 30° 
W 
N30O W 
N 10° to 15° 
m. iii, p. 467. 
Hitchcock’s 
Geol. Repor 
Mass. p. 38S 
N 10“ E ■ 
N 20“ E 
double set 
m. iv, p. 120 
1 . iv, p. 129, 
1 . iii, p. 473 
1 . iii, p. 473 
a. iii, p. 487. 
. iii, p. 487. 
LOCALITIES. 
Nine miles from Poughkeepsie on the road to Patterson. 
On the road from Patterson to Poughkeepsie, very com¬ 
mon on slate rocks. 
Amenia, between Mr. Wheeler’s and Van Benschot- 
ten’s. 
Near a school-house, nine miles from Poughkeepsie on 
the road to Amenia, in the valley of Wappinger’s 
creek. 
In Northeast on Winchell’s mountain, on farm of Maj. 
Denton. 
Between Fishkill and Rhinebeck, but particularly well 
characterized near the ninety-fifth mile stone, two or 
three miles south of Rhinebeck. 
Strike of rocks N. and S. 
or N.N.E. or S.S.W. 
Very distinct. 
Two and a half miles west of Pineplains on the western 
declivity of the mountain. 
On Mount Tom (highest mountain) near Litchfield. 
Well characterized. 
In southeast part of Pineplains. 
Half a mile to one mile north of Pineplains, on the east 
side of the road. Surface of rock highly inclined. 
On the mountain west of Hurd’s corners in Pawling, 
on the road to Beekman Centre. 
On the top of the mountain about three miles west of 
Ameniaville, just on the western brow. 
Three quarters of a mile west of Lower Redhook. 
Rock smooth, except the scratches. 
Guarter of a mile west of the above, on a small ridge 
that emerges from the sandy loam. 
Two miles south of Lower Redhook landing, forty or 
fifty feet above the Hudson, and ten rods from the 
shore, where a clay bank had been washed off and 
left it exposed. 
On the road side between Rhinebeck and the landing, 
west of the ridge where the rock paves the road, and 
west of the creek. 
On the Rhinebeck and Pineplains turnpike. 
1 do 
do 
do 
Cassels 
Slate 
do 
1 do 
do 
do 
Merrick 
Talcy slate.. 
do 
Several, 
say 8 
Several, 
say 8 
Many, 
say 12 
Many, 
say 10 
do 
do 
do 
do 
do 
Hard grit ... 
do .... 
do .... 
do .... 
do 
do 
do 
do 
Hard grit and 
slate 
do 
do 
do 
do 
do 
do 
do 
do 
do 
do 
m. iii, p. 487. 
m. iv, p. 174. 
m. iv, p. 173. 
m. V, p. 100. 
m. V, p. 112. 
m. V, p. 112. 
m. v,p. 112. 
m. V, p. 134. 
m. V, p. 134. 
Two and three quarter miles from Lower Redhook, 
on the road to Long pond, in the northeast part of 
Rhinebeck. 
Hyde-Park, half a mile east of the post-road, on the 
road to Clinton that branches from the post-road half 
a mile north of De Graff’s tavern. The slate has 
been shifted by slight faults since the scratches were 
made. 
A little out of the village of Hyde-Park, three quarters 
of a mile east of the river. 
Summit of the highly elevated lands or mountain called 
Chesnut ridge, ranging from Winchell’s mountain on 
the north to Fishkill mountains on the south. 
A little south of Rhinebeck village, near the post-road. 
Between Rhinebeck and Redhook. 
Frequently seen for five or six miles east of Upper Red¬ 
hook. 
Southeast part of Redhook, and the northeast part of 
Rhinebeck. 
Northeast of Redhook, and northwest part of Milan. 
* Professors Briggs, Gale, Merrick, Cassels, and Dr. W. Horton were principal assistants on the Geological Survey of the First District of 
New-York. 
