Geology, 4c. of the Connecticut. 211 
The a and sub-species are numbered in order 
Wom 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-Stratlord, and two miles from Hartlord. (Sid- 
Also: at Berlin. (Percival.) Also at Hatfield, 
(Gorham.) Also at Middlefield. (Baton) Also at South- 
ampton lead-mine, at the Leverett lead veins, and at the 
Greenfield copper veins. At the three last mentioned pla- 
ees it is chiefly the lamellar variety. 
3. Caleareous Spar. 
t Cryeeitlived: At the Marble Quarry in Milford, in 
rhombic crystals; 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 siaishn: 
. Laminated. At Milford ine (Sdtiman.) Also, in 
‘ld in greenstone, Deerfield 
4. Granular Limestone. At Milford Hill, embracing the 
bed of Verd Antique Marble. (Silliman.) In Wilmington, 
Vt.P 
5. Concreted Carbonate of Lime. 
. Calcareous pichustanans. In the Coal Formation in 
Stidedend &c. 
