LAWN 
Lakes, bursting of, through moun- 
tains, ill, 252. 
, ancient, along the Connecti- 
cut valley, vil, 16. 
Lake, Chautauque, height of, above 
the sea, xlv, 17. 
Erie, coast of, xxix, 204. 
, degradation on, a 
349. 
——, on the eruption of Long and 
Mud Lake, Vt., S. E. Dwight, 
XI, sob 
of the Highlands, N.Y., v, 32. 
Huron, account of, and of fos- 
sils about, iii, 254f, 270f, 271.f 
Ontario, beaches of, and 
height, xxxvi, 43. 
-, height of, above tide 
level, depth and temperature, 
xxxill, 4038. 
, C. Dewey, xxxvii, 242. 
— of the Woods, position of, de- 
termined astronomically, by J. 
L. Tiarks, xv, 41. 
Lalande, medals founded by, xxv, 
190. 
Lamp, aphlogistic, iv, 328.f 
; , platina, xx, 385. 
——, new astral, v, 386. 
——, hydrostatic, xvil, 161. 
——, a new, with inflammable air, 
J. Green, ii, 330.f 
, hew, without flame, i, 207. 
, monochromatic, of D. Brews- 
ter, vil, 363. 
, oll gas, xxii, 387. 
, portable gas, iil, 371. 
——, Rumford, xix, 40. 
, voltaic, J. Cutbush, ti, 332. 
black, analysis of, xi, 387. 
glasses, to prevent the crack- 
ing of, xxi, 165. 
Land and water, distribution of, xiv, 
375. 
Land surveys in the U. States, pres- 
ent mode of conducting, xix, 131. 
Languages, F. Adelung’s work on, 
lil, 376. 
, number of, on the earth, x,383. 
138 
LEA 
Lanthanium, a new metal, xxxvil, 
192. 
, atomic weight of, xlvii, 190. 
Lapham, D., problems relating to 
canals, xxvii, 127.f 
, plan of the canal locks at 
Cincinnati, Ohio, xxiv, '70.f 
Lapham, D. and J. A., observations 
on boulders in Tonio: xxii, 300. 
Lapham, I. A., statement of eleva- 
tions in Wisconsin, xlvi, 258. 
of signs, observations on, S. 
Akerly, viii, 348. 
, notice of the Louisville and 
Shippingsport canal, and of the 
geology of its vicinity, xiv, 65.f 
Laplace, P. S., eulogy on, xxv, 1. 
Larkin’s Geometry, ii, 359. 
Latent heat of vapors, ii, 3861. 
Laterrade, J. F., on the unicorn, 
xxi, 123. 
Lathrop, J. H., applications of the 
igneous theory of the earth, 
XXxvill, 68; xxxix, 90. 
Lathrop, S. P., ice mountain in 
Vermont, xlvi, 331. 
Latitudes, on determining, xlix, 
232. 
‘|| Latitude, reduction of, T. J. Cram, 
KXKIy Sees 
of the Hudson (Ohio) observ- 
atory, XXxix, 362. 
of Mt. Washington, xli, 384. 
and longitude of Yale College 
observatory, xxxiv, 309. 
Latrobite, analysis of, Gmelin, ix, 
330. 
Laudanum, denarcotized, mode of - 
preparing, R. Hare, xii, 291. 
Laumonite, in Delaware, ix, 246. 
,1n New York, vi, 365; ix, 
4}. 
—, in Nova Scotia, xxx, 345. 
——, moving rocks in a lake in 
Salisbury, ix, 239. 
Lea, H. C., description of eight new 
species ae shells, xlii, 106.f 
, hew Heyy shells from Ala- 
bama, xl, 92.f 
; examination of the peroxide 
of manganese, xlil, 81. 
Kea, L, cancpininions to geology, 
noticed, xxv, 414. 
