60 4 list of Minerals and Organic Remains. 
imperfect prisms. The composition of this mineral, ac- 
cording to authors, is variable, and a small portion of 
found in it. In the mineral from Chatham, is a little 
alumine and manganese, and it appears to contain lesslime, 
and more silex and iron than the European specimens. 
To the eye it resembles hornblende. But its specific grav- 
ity and composition seem to prove it to be yenite. 
Sulphate of Magnesia, 
Effloresces on clay in the bank of the Hudson, three 
miles above the village of Lansingburgh. Eaton. It is said 
to be found also in the argillaceous marl about the Hud- 
son. 
Galena. 
Livingston, Columbia county, N. ¥Y. The mine I have 
not visited ; but the ore is said to be very abundant. 
Nephrite. 
Salisbury, Con. found by Mr, C. A. Lee. It is somewhat 
lamellar, and exhibits imperfect prisms by fracture, and is 
less bluish white than that of Rhode-Island. Its hardness, 
toughness and fusion, prove it to-be the same mineral, 
Caleareous Tufa. 
At the Falls in Sgr Con. It is finely characterised, 
nd 
but is morec ct and hard than it commonly is. Fou 
by Mr. Lee. 
ART. Il. —A List of Minerals and organic Remains, occur- 
ring in the Canadas. By Joun Brassy, M. D. F. L. S. 
and M. G. S. Lond 
TO PROFESSOR SILLIMAN, 
a ‘respectfully solicit a place in the heketiian Journal of 
Science for a list of minerals and organic remains occur- 
nine 
