PRIMARY ROCKS. 
545 
No. of Remarks on the direction from place to place, with the strike, dip, and nature of the rocks, etc. Distances 
course. yards. 
19 N. 10“ E. from Anthony’s Nose point along- the rocky shore;- 150 
liO and thence along the same course, skirling the salt marsh to a rocky island_600 
21 N. 40° E. along the shore of the island __400 
The rock here is hornhlendic gneiss, granite and gneiss. The line produced would 
strike Sugarloaf mountain. The rock of this island, where seen, was not suitable 
for a quarry stone. The marsh in rear of this island is about two hundred to three 
hundred yards wide. 
22 N. 45° E. to another rocky island;- 100 
and thence along the shore of this island_ 150 
23 N. 50° E. to Serpentine point, along the edge of the marsh-300 
The marsh extends from the rear of this point, (on which serpentine limestone and 
verd antique are found,) in the rear of the islands mentioned, to near Anthony’s 
Nose point. 
24 N. 15° E. along the shore_ 109 
This line prolonged would strike the camp ground on the plain at West-Point. 
25 N. 35° E_ 100 
26 N. 45° E. The strike here is N. 50° E., and dip 70° N.W... 300 
27 N. 55° E. to forty feet west of an old landing. 150 
The rocks here are micaceous pyritous gneiss, and impure verd antique. 
28 N. 70° E. at the north end of the neck on which the Old silver mine is located.. 80 
The rocks here are felspathic gneiss, micaceous pyritous gneiss, white limestone con¬ 
taining imperfectly characterized brucite, etc. This neck, and the shore for two 
miles north-northeast, is very interesting to the geologist. 
From Fort Montgomery, the shore of the Hudson and of the salt marsh trends nearly south 
about two and a half miles. At three-quarters of a mile south of Fort Montgomery on the shore, 
the north end of Wagon’s first island bears S. 40° E. about half a mile. This island is 
about half a mile wide from north to south. The salt marsh extends from the southwest 
end to the main land, and the flats extend from the northwest point in a curved direction 
towards Mrs. Pell’s house. In the cliff below Mrs. Pell’s, a bed of granite seventy-five to 
one hundred feet thick lies between strata of gneiss, the strike of which is easterly and 
westerly, and which dip to the northward about forty-five degrees. 
No. Remarks on the direction, etc. Yards. 
1 From three-quarters of a mile south of Fort Montgomery to north point of Wagon’s 
island, about 900 yards. Course S. 40° E_900 
2 To the second point of Wagon’s island, S. 30° E__400 
3 To the third point of Wagon’s island, S. 25° E_400 
There is a bed of good grey granite on the shore on this course. 
4 S. 20° E. into a little hay_ 100 
5 S. 60° E. to the point on the east end of the island_ 150 
Granite was observed along both the last courses. 
Geol. 1st Dist. 69 
