212 Geolog » &c. of the Connecticut. 
6. Argentine. At Washingion, Litchfield Co. (Brace.) 
1. Magnesian Carbonate of Lime. 
abl: Crystalyzed. (Rhomb Spar.) Near New-Haven, with 
Mcstus in Serpentine. (Si/diman.) Abundant at the Milford 
,,aible Quarry. Also at Middleneld, in Soapstone. (Dew- 
4,) Also at Southampton lead mine. (Eaton. 
2. Dolomite: At Washington and Milford Hills. (Si¢i- 
“< man.) Also at Litchfield. (Brace.)’ Also at Middlefield. 
~ (Dewey.) Also at Jamaica, in Vermont. (J. 4. Allen.) 
8. Brown Spar. At Leverett, in a vein of galena, pyrites, 
copper and blende. grouped in rhombic crystals on quartz; 
the Jameilae usually curved. 
9. Fetid Carbonate of Lime. At Northford. (Silliman.) 
10. Bituminon>Carbonate of Lime. Near Middletown, 
with [chihyolites. (Siddiman.)- Also at Southington, in the 
Coal Formation, » ree oe, 
‘A. Phosphate of Lime. 
1. Apatite. At Milford Hills. (Silliman.) 
_ 13. Gypsum. In amygdaloidal greenstone in Deerfield, 
_in smal] quantities; “crystallized—white, and retaining its 
water of crystallization.” Found by Dr. Cooley, and de- 
termined by Professor Silliman. This has been already 
mentioned in the geological part of this sketch. 
Se a a a a a 
