Geology^ !^c. of the ConnccticuL 225 



tabular quartz, chalcedony, balls of zeolite, &ic. Hundreds 

 of specimens have been obtained at this place. To procure 

 them, however, requires much labour. 



48. Apophyllite. Near Saybrook, Connecticut. (Gibbs.) 



49. Tremolite. At Milford, Washington, Goshen, Canaan, 

 (Conn.) &c. in dolomite and granular limestone. (Silliman.) 



A mineral is found at Ley den in great quantities, associated 

 withquartz, limestone &ic. and sometimes forming the gangue 

 of the red oxid of titanium ; the same occurs also at West Ha- 

 ven or Orange in hornblende — also at Leyden ? at Colrain ."' 

 at Shelburne ? at Conway .^ at Goshen? (Mass.) at Guil- 

 ford ? and Brattleborough ^ Vt. and in various instances, in 

 vast abundance: this mineral has generally been cp'led 

 tremolite, and sometimes zoizite, but it is probably sccipolite. 



50. Ashestus. At New-Haven and Milford, in serpentine, 

 very beautiful. (Silliman.) Also at Pelham, Mass. where it 

 occurs with serpentine and talc. 



Amianthus. At New- Haven and Milford. Also at Wash- 

 ington. (Silliman.) 



51. Augite. At Litchfield in dolomite — the whitish varie- 

 ty. (Brace.) Also at Brookfi Id and Washington in dolomite. 

 (Eaton.) Also at Goshen, Mass. in granite, in flattened 

 greenish gray prisms, sometimes eight inches long and two 

 inches wide. This locality is one mile north of the meet- 

 ing house, on the road to Ashfield. Also at Deerfield, in 

 secondary greenstone, associated with quartz and calcareous 

 spar, either in irregular veins or imperfect crystals — -colour 

 black — not abundant. 



1. Sahlite. Near New-Haven in serpentine rocks belong- 

 ing to the formation of verd-antique marble. (Silhm.an.) 



52. Common Hornblende. This, of course, occurs in great 

 quantities as a constituent of several rocks marked on the 

 map ; indeed, it may be found in a good degree of pu- 

 rity almost every where along the Connecticut, either in 

 place or in rolled masses. 



Vol. VL— No. 2. 29 



