Trou 
Torrey, John, on the condensation 
of carbonic, sulphurous and 
chloro-chromic acid gases, xxxv, 
374; xxxvi, 394.f 
, on staurotide, i, 435. 
, on siderographite, ii, 176. 
, on an ore of zinc at Ancram, 
N. Y., v, 2385. 
, notice of plants collected by 
D. B. Douglass, around the Great 
Lakes and the head waters of the 
Mississippi, iv, 56. 
, number of indigenous plants 
of New York state, xl, 77. 
, description of the Usnea ach- 
arius, vi, 104.f 
, Flora of the Northern and 
Middle States, notice of, vii, 178 ; 
viii, 192; xii, 179. 
, on West Point minerals, ix, 
402. 
, and A. Gray, Flora of North 
America of, noticed, xxxv, 180; 
xxxix, LOS) (xi PSone iexhiv. 
420. 
Torrey, Joseph, proposed reform of 
orthography, xxxix, 197. 
Tortoise, fossil, xvii, 290. 
, a new freshwater, R. Har- 
lan, xxxi, 382. 
Totten, J. G., descriptions of some 
shells of the coast of New Eng- 
land, xxvi, 3866f; xxviii, 3847. 
Touchwood, xxi, 168. 
Tourmaline, electricity of, xvi, 390 ; 
xvili, 801. 
, to detect boracic acid in, vi, 
157. 
, analysis of, xiv, 384. 
, analyses of varieties of, xv, 
389. 
in Canada, vit, 61. 
in Connecticut, i, 8585 i1,| 
142, 205, 2389, 240; vi, 220, 
246; x, 206; xiv, 229; xviii, 
361. 
in Delaware, xiv, 11. 
in Maine, x, 15; xviii, 298, 
299.f 
266 
TRA 
Tourmaline in Massachusetts, i, 
114, 343, 346; iv, 55; vii, 55; 
vili, 42, 2383; ix, 42; x, 18,214; 
xil, 259; xiv, 215, 219. 
—— in New Hampshire, xxxiv, 
107, 204. 
in New Jersey, ix, 245. 
in New York, i, 237; 11,366; _ 
iV, .073 xix, 2238, 225,227; 
xxv, 349. 
—— in North Carolina, v, 263. 
—— in Pennsylvania, ix, 453; x, 
221, 222; xiv, 5, 8, 12, 14. 
—— in Rhode Island, ix, 46. 
—— in Vermont, i, 114; iii, 76; 
v, 271. 
in Virginia, v, 263. 
—— of Chesterfield, for sale, xiv, 
400. 
Tower of Babel, ruins of, xxxvii,352. 
Town, Ithiel, new mode of bridge- 
building, iii, 158.f 
Town’s bridges, xxxviii, 276.f 
Townsend, J. K., on the ornithology 
of the United States, xxxvi, 201. 
Townsend, P. S., titles of memoirs 
read before the New York Ly- 
ceum, il, 339, 371. 
Toxodon of Patagonia, R. Owen, 
xxxill, 208; xxxv, 196. 
Trachyte, varieties of, xili, 249; 
xv, 32. 
at the Azores, iv, 259. 
Tracks, see Footprints. 
Tract Society of Paris, v, 383. 
Tracy, C., on the rotary action of 
storms, xlv, 65.f 
——, on the oil of Indian corn, 
xlill, 403. 
Trade, statistics of, between Great 
Britain and the United States, 
MARIS We 
—— winds, remarks on, W. C. 
Redfield, xxv, 124; xxxiii, 61. 
—— in Maryland, v, 256; xiv, 12; 
xvill, 78. 
Traill, T. S., Russian vapor bath, 
Mx 205. 
——, on the preservation of ani- 
mals, xv, 167. 
Transactions, notice of, see Sociely. 
Transit of Mercury, May, 1845, D. 
Olmsted, xlix, 142. 
