PRIMARY ROCKS. 
555 
\inless the iron business should be more extensively carried on, and for which there are great 
natural advantages. 
The rocks of this region of country are mostly gneiss and granite. The gneissoid rock has 
all the characters of gneiss, except that the mica is very generally absent, and the same re¬ 
mark applies to the granitic aggregate. Garnets, hornblende or magnetic oxide of iron, 
frequently seem to form constituent parts of the rocks. The gneiss and granite are grey and 
reddish, according to the color of the felspar. Hornblende is so abundant in some of the 
laminated rocks, as to make the name of hornblendic gneiss appropriate. 
Table continued. 
STATIONS. 
Angle. 
Station N. At east end of the base line. 
To Kosciuszko’s monument .. 
Base line ...... 
Hotel..... 
Cadets’ monument. 
Fort Putnam. 
000 
245 
314 
239 
Feet. 
951 
4357 
Station M. (o.) On the public wharf. 
To the hotel, perpendicular to its front. 
the dagstafiT. 
the Cadets’ monument. 
the battery on the hill west of Fort Putnam. 
the peak north of the above battery. 
the north peak north of the above peak. 
First rocky point .... 
Second ditto..... 
Third ditto. 
Fourth ditto... 
First target on the right bank of Hudson river. 
Second target on the same bank. 
Point below the wharf and end of lower dock .... 
High cliff back of Coldsprings on Bull hill in line with 
Gouverneur’s point, and the fort near the red house on 
Constitution island. 
000 00 
47 26 
135 00 
20 
00 
00 
30 
00 
40 
30 
45 
00 
Station P. On aprohngaMon of the base line easlwardly on a 
high hill-side. 
To the north end of the north barrack at West-Point;. 
and to base line east end on the plain of West-Point. 
Fort Putnam. 
Kosciuszko’s monument. 
Hotel. 
Cadets’ monument... 
East point of Anthony’s Nose 1. 
Bear mountain.... 
Round-peak mountain, northwest of Fort Montgomery. 
Bare mountain or Bare-rock mountain . 
the battery on the hilt west of Mrs. Kinsley’s. 
the summit west of Bare-rock mountain. 
Kronchites 1... 
the peak west of the ravine... 
the ravine southwest of the Crow’s Nest. 
the Crow’s Nest, highest point. 
the southeast peak of the Crow’s Nest. 
the northeast peak of the same. 
Butter hill peak.... 
Peak southwest of the above. 
Battery on the hill east of Gouverneur’s. 
Hill south of the battery, and to Bear mountain a little west of 
its summit........... 
000 00 
356 48 
3 43 
5 16 
10 13 
291 20 
313 50 
321 00 
337 35 
343 20 
341 35 
350 00 
10 16 
12 36 
16 07 
19 00 
22 30 
32 06 
26 43 
330 20 
70' 
