Gi Ey A 
Lea, I., causes and effects of earth- 
quakes, ix, 209. 
, on hybernation, ix, 75. 
——, impression in sandstone, vy, 
155.f 
, on the Naiades, notice of, 
xvi, 878; xxii, 169; xxvul, 371; 
xxxv, 184; xlvii, 104. 
, on the northwest passage, x, 
138. 
, New Grenada and Cuba, 
oolitic strata in, xl, 41. 
, Alabama tertiary and list of 
fossils, xxv, 417, 419. 
, on the Unionide, xxii, 170; 
xxvil, O71. 
, on the genus Unio, &c., no- 
tice of, xxxv, 184. 
, on the study of natural his- 
tory, xi, 218. 
, a halo and parhelia, x, 308.f 
Lea, M. C., on the first or southern 
coal field of Pennsylvania, xl, 
370. 
Lead, sheet, Chinese process of 
making, vii, 391. 
, on the use of the hot blast in) 
smelting, xlii, 169.f 
, action of water on, xxxiv, 25; 
xlvi, 398. 
in sulphuric acid, test for, 
xvii, 195. 
—-, sulphate of, action of some 
alkaline salts on, J. L. Smith, 
xlvil, 81. 
, tartrate of, a pyrophorus, 
207. 
, native, in Europe, x, 191. 
—— mines of the Hartz, xix, 113. 
of the United States, 
proceeds from, x, 398. 
of the West, J. Locke, 
xliii, 147. 
of the West, remarks on 
the position and origin of, xlvii, 
106. 
1b 
, rock of, of the West,| 
identical with the Niagara lime- 
stone, J. Hall, xlii, 59. 
—-— of Lubec, in Maine, 
XXX, dad. 
139.” 
LEA 
‘Lead mines of Massachusetts, ix, 
166; xxi, 56. 
of tlampshire Co.,Mass., 
notices of, A. Nash, xii, 238.f 
of Southampton, Mass., 
i, 186; vi, 201. 
— of Whately and Lever- 
ett, Mass., vi, 204. 
of Middletown and Beth- 
lehem, Ct., vi, 205. 
and ores in New York, 
xlvi, 28. 
at Ancram, New York, 
notice of, C. A. Lee, viii, 247. 
of northern New York, 
XXXvl, 24. 
and ores of Davidson 
Con NE Ce i ISS348) 
region of Missouri, H. R. 
Schoolcraft, iii, 248. 
and ores of Missouri, 
Troost and Lesueur, xii, 379. 
of Missouri, J. NN. Ni- 
collet, xlv, 340. 
of La Motte, the ore of, 
not argentiferous, xliii, 64. 
of the upper Mississippi, 
notice of Chandler’s map of, xvii, 
416. 
of Wisconsin and Mis- 
sourl, J. T. Hodge, xliii, 35.f 
of Wisconsin, and mode 
of working, J. T. Hodge, xiliii, 
41.f 
ores, 
176. 
observations 
on, ili, 
, price of, and of lead in 
Wisconsin, xliil, 72. 
of the La Motte mine, 
Mo., not argentiferous, xlili, 64. 
, native carbonate of, David- 
son Co., N. C., analysis of, xli, 
183, 348. 
, in Massachusetts, 
vi, 201; ix, 249. 
» —— ——, in Missouri, xii, 
379. 
: ,in Wythe Co., 
Va., xiii, 169. 
: chloride of, in Massa- 
chusetts, vi, 201. 
