Geology, ^c. of the Connecticut. 211 



The species and sub-species are numbered in order 

 from first to last. The varieties also, whenever they occur, 

 are usually numbered. 



1. Nitrate of Potash. Efflorescing on the soil under old 

 buildings, &c, 



2. Sulphate of Barytes. At Cheshire, Southington, Far- 

 mington, New-Stratford, and two miles from Hartford. (Sil- 

 liman.) Also at Berlin. (Percival.) Also at Hatfield. 

 (Gorham.) Also at Middlefield. {Eaton.) Also at South- 

 ampton lead-mine, at the Leverett lead veins, and at the 

 Greenfield copper veins. At the three last mentioned pla- 

 ces it is chiefly the lamellar variety. 



3. Calcareous Spar, 



1. Crystallized. At the Marb'e Quarry in Milford, in 

 rhombic crystals j also in the lead mine at Middletown. 

 [Silliman.) Also at the lead mine in Southampton, in lim- 

 pid and straw-colored crystals on galena and quartz. Forms 

 of the crystals. 1. A dodecaedron, composed of two six- 

 sided pyramids, applied base to base, (hog-tooth spar.). 2. 

 A short six-sided prism, terminated by three-sided pyra- 

 mids. 3. The same, with all the solid angles of the prism 

 truncated; forming a crystal of twenty-four faces. Also, in 

 greenstone in Deerfield and Greenfield; and in a coarse 

 limestone in Leyden, Conway, &£c. in rhombs. 



2. Laminated. At Milford Hills. [Silliman.) Also, in 

 veins in greenstone, Deerfield. 



4. Granular Limestone. At Milford Hill, embracing the 

 bed of Verd Antique Marble. {Silliman.) In Wilmington, 



Vt..? 



!o. Concreted Carbonate of Lime. 



1. Calcareous Incrustations. In the Coal Formation in 

 Sunderland, &c. 



