196 
j Assembly 
lity. I found two specimens in 1826 near Kipp's bay, but have heard 
of none more recently, nor have I been able to trace it to its geological 
place. 
VI. 
Tfu Minerals enumerated : 1st. Those 'peculiar to the island, 2d, Those 
from other sources, 
1st. Those peculiar to the island. 
1. Quartz Crystals. (Inferior specimens,) small crystals in the Har- 
lem rail-road cut under the track in veins of gneiss, about 122d-street. 
2. Rose Quaitz. (Inferior specimens,) from the same place; the loca- 
lity being covered up no more specimens can be obtained. 
3. Epidote. Very small crystals of a deep green colour, in hexagonal 
prisms in veins of half an inch wide in gneiss, at 38th-street, on the 
banks of the East river, in the southeast part of a gneiss quarry. 
4. Tourmaline. In hexagonal prisms in granite beds or veins in vari- 
ous parts of the island. Many fine specimens were obtained in opening 
the Harlem rail-road. 
5. Brown Garnets. With 24 trapezoidal faces, very imperfect; abun= 
dant in the gneiss on the shore of the Hudson, between 42d and SOth- 
streets, and in boulders in every section of the island. 
6. Hydrous Jlnthophyllite. Already described, very abundant. 
7. Serpentine. Intermixed with white limestone and of granular struc- 
ture, described with the last, and from the same locality. 
8. Red Stilbiie. In small quantities in veins of gneiss; in small scopi- 
form fibres of a reddish yellow colour. From the rail-road cut near the 
tunnel. The locality is exhausted. 
9. White Pyroxene. In foor sided tables in veins in limestone at the 
abandoned quarries at Kingsbridge, at about 20Sth-street, five rods west 
of the Kingsbridge road. 
10. Fetid Feldspar. Of a bluish white colour, in tabular masses in 
limestone at Kingsbridge, Thompson's quarry near 196th-sireet, and 
about 100 yards west of the road, 
11. Iron Pyrites. In exceedingly small cubic crystals throughout the 
island, in the gneiss and in the limestone at Kingsbridge. 
12. Tremolitej white. In the abandoned quarries of limestone at 208th- 
street, west of Kingsbridge road. 
2d. Those from other sources, 
