Geology, Sfc. of the Connecticut. 227 



four sided prisms, in steatite and talc ; the specimens su- 

 perb. (Hall.) Also at Chatham Ct. near the bank of the 

 river opposite the upppr ferry in Haddam, in an enormous 

 granitic vein; associated with black schorl^ magnetic oxide 

 of iron, &ic. Also at Belchertown. Also at Shutesbury in 

 gneiss. Also at New balem in acicular crystals in chlorite. Also 

 at New Fane, where it was discovered by Dr. J. A. Allen. 

 It occurs in steatite in four sided, sometimes very perfect, 

 sometimes flattened and striated crystals, five or six inches 

 long, often half an inch broad, generally radiated, sometimes 

 curved and crossing one another. The colour is a dark 

 beautiful green, and the specimens are very elegant. 



54. Aathophillilc. It is said to have been found near 

 Saybrook (Cleaveland's Mineralogy.) 



55. Diallage. In serpentine rocks near Nevi^-Haven — 

 well characterised. (Hall.) Also in Conway ? in granite. 



56. Made. At Bellows Fal's,Croyden, Cornish, Charles- 

 town, Langdon and Alstead in argillite. (Hall.) According 

 to Mr. Nuttall, the foliated mineral occurring so abundantly 

 in the mica slate in Chesterfield, Plainfield, tJawley, Heath, 

 &ic. being usually inserted in small bronze coloured plates, 

 nearly at right angles with the folia of the slate, may be 

 made. 



57. Serpentine. 



1. Precious Serpentine. At Milford, in nodules or irregu- 

 lar masses in primitive limestone. (Silliman.) 



2. Common Serpentine. In extensive beds and variously 

 blended with limestone at Milford and New-Haven, forming 

 the Verd Antique. (Silliman.) Also at VVesifield in granite. 

 (Eaton.) Also at Middlefield, associated with steatite. (Dew- 

 ey.) Also at Grafton, Windham and Putney, Vermont, in 

 large insulated masses weighing many tons. (J, A. Allen.) 

 Also at Pelham Mass. in a large loose mass penetrated by 

 asbestus and associated with talc. Also at Leyden, Shef- 

 burne, Deerfield, &c. in small rolled masses. 



58. Talc. 



