Geology and Miner log sy of a part of Massachusetts, br 57 
8. SULPHURET OF LEAD. 
Specimens of common galena have been ye SS to me. 
from Adams. A bed ef the ore is said to be e E. 
side of Saddle Mt. In Wi oe ib in seit Hans 
In Livingston, near Hudson, in a oa 
9. ZINC. . 
e form of zinc exists in the iron ore at Salisbury. 
A Hage quantity of the artificial laminated mineral, Cadnua, 
described in this Journal Vol. VI. p. 180, has been found in 
the chimnies of the furnaces. 
10. OXIDE OF MANGANESE. 
Var. 1. Radiated. 
In distinct short four sided prisms on the compact variety—~ 
as a fine lustre—in a loose mass of several pounds found 
in Pittsfield. 
Var. 2. Compact. 
PBvimingvon—ebuudant. It occurs in small quantity at the 
other ore beds. nome Sheffield, West Stockbridge, Ad- 
ams, and Cummington 
Var. 3. Earthy. 
Colour brown and brownish black, fracture and texture 
Gin ver a Bennington. Also at Richmond with 
ibbsite ; Boa 
Var. 4. Siliceous Owide of. tet et 
In small q 
Vor. ven 
