212 Geology, i/'c. of the Connectieut. 



6. Argentine. At Washington, Litchfield Co. (Brace.) 



7. Magnesian Carbonate of Lime. 



,1. Crystalyzed. (Rhomb Spar.) Near New-Haven, with 

 -n, estus in Serpentine. {Silliman.) Abundant at the Milford 

 arble Quarry. Also at Middlefield, in Soapstone. {Dew- 

 ^y.) Aiso at Southampton lead mine. (Eaton.) 



2. Dolomite: At Washington and Milford Hills. {Silli- 

 man.) Also at Litchfield. [Brace,) Also at Middlefield. 

 (Dewey.) Also at Jamaica, in Vermont. (J. A. Allen.) 



8. Brown Spar. At Leverett, in a vein of galena, pyrites, 

 copper and blend<\ grouped in rhombic crystals on quartz; 

 the lamellae usually curved. 



9. Fetid Carbonate of Lime. At North ford. (Silliman.) 



10. Bituminous Carbonate of Lime. Near Middletowq, 

 with Ichthyolites. (Silliman.) Also at Southington, in the 

 Coal Formation. 



11. Phosphate of Liinc. 



1. Apatite. At Milford Hills. (Silliman.) 



12. Filiate of Lime. Cubic and massive fluorspar occurs 

 m Huntington — also chlorophane in the same place. (Silli- 

 man.) Also at Middletown, in the lead, &tc. vein. (Brace.) 

 Also at Southampton lead mine, green and purple. (Gibbs.) 

 Also at Deerfield, crystallized in dodecaedrons.'* purple — in 

 a loose stone, which contained also a crystal of galena. (Coo- 

 ley.) Also at Putney, massive and grass green, forming a 

 vein in bastard mica slate. (Silliman.) Also at Westmore- 

 land, light green. (Hall.) Also at Conway, massive, light 

 green, in small quantities in a vein in mica slate. 



13. Gypsum. In amygdaloidal greenstone in Deerfield, 

 in small quantities; "crystallized — white, and retaining its 

 water of crystallization.'' Found by Dr. Cooley, and de- 

 termin*'d by Professor Silliman. This has been alreadj 

 mentioned in the geological part of this sketch. 



