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we) 
N° XE. 
The eleventh Shelf. 
1. Fine stalactite, or aqueous carbonate of lime; from 
a cave in Bermuda. 
2. Nullipore, or polypier without orifices. Neighbour- 
ing sea. | 
3. Lenticular gypsum. France. 
4. Lamellar gypsum. Nova-Scotia. 
5. Milk-white gypseous alabaster. Bay of onde: 
6. Three specimens of tripoli, or scouring stone; two 
from Louisville, Kentucky. 
7. Two small specimens of basaltes; the larger six 
inches in length, and nearly three in breadth one a hex- 
agon, and the other a pentagon. St. Croix. 
7. Macle. Northampton, Mass. 
8. Hexagonal mica. Highlands. 
9. Coccolite in spar. Ticonderoga. 
10. Seven specimens of polished serpentine ; white, 
black, dark green, pale green, yellow, red, &c.; from 
several localities ; one elegant one from Dagget’s quarry, 
New-Haven. 
11. Polished specimen of the native magnesia, from 
Hoboken. 
12. Half a dozen specimens of the rocks from Arendal, 
in the southern region of Norway; showing their primitive 
constitution of quartz, horn-blende, feld-spar, &c.; and 
allowing comparisons to be made with the eee rocks 
in our own country. 
13. The stony production from the S. W. Coast of New 
Holland, called the petrific region; which has been, with- 
out full evidence, denominated a petrified serpent. 
14. Two specimens of smoothed marble, with cardites 
and entrochites. 
