2S4 Geology, &fc. of the Connecticut, 



seminated in the verd Antique marble. (Silliman.) Also at 

 Middlefield in serpentine. (Eaton.) Also at Cummington, 

 well characterized and almost exactly resembling the Bal- 

 timore chromate ; in a loose mass — Found by Dr. J. Por- 

 ter. 



92. Sulphuret of Lead. At Middletown, Southington, and 

 Huntington, where it is uncommonly argentiferous, and at 

 Bethlehem, (Silliman.) Also at Berlin, (Percival.) Also 

 at Southampton, Montgomery, Hatfield', Leverett, where 

 are two localities, and Whately. At these places the struc- 

 ture of the ore is commonly foliated, sometimes granular 

 and sometimes in cubical crystals. 



93. Carbonate of Lead. This exists in the cavities of the 

 matrix of the lead mine at Southampton. Its colour is 

 white or mixed with yellow. Before the blowpipe it de- 

 crepitated and readily yielded a globule of lead- It occurs 

 crystalized as follows. — l.Two six sided pyramids united 

 at their bases and deeply truncated at their apices — making 

 fourteen faces to the crystal. — 2. A six sided prism, ter- 

 minated by four sided pyramids, two of the faces being en- 

 larged — fourteen faces to the crystal. — 3. Tabular prisms 

 with bevelments on the edges ; but the precise form I 

 could not determine. These tables frequently cross one 

 another. 



94. Carbonated Muriate of Lead. At the Southampton 

 lead mine in light green groups of cubic crystals, termina- 

 ted by tetraedral pyramids. (Meade.) 



95. Sulphate of Lead. At Huntington with argentifer- 

 ous galena. (Silliman.) Also at Southampton lead mine, 

 in plates or tables on galena. (Meade.) 



96. Phosphate of Lead. At Southampton lead mine, in 

 light green spherical masses, having a radiated structure. 



97. Molybdate of Lead. At Soutliampton lead mine in 

 tabular, wax yellow crystals. (Meade.) 



98. Sulphuret of Zinc. At Berlin. (Silliman.) Also at 

 Southampton lead mine, foliated and crystallized. The 



