542 
Letters of Berzelius and Liebig, v, 
433 ; of Scheele, v, 434. 
Leverett, F., pleistocene fluvial planes 
of Pennsylvania, ii, 200; moraines 
of Lake Erie, iii, 281; drainage 
features of Upper Ohio basin, vii, 
247; correlation of New York mor- 
aines, l, 1. 
Lévy, feldspaths dans les plaques 
minces, viii, 173. 
Lewis, H. C., glacial geology of Great 
Britain, viii, 73. 
Ley, W. C., Cloudland, ix, 168. 
Libbey, W., Jr., gases in Kilauea, vii, 
o71. 
Lick Observatory of the Univ. of Cali- 
fornia, publications, viii, 76. 
Light, magnesium, Rogers, iii, 301. 
reflection-and refraction by thin 
surface layers, Drude, ii, 70 ; refrac- 
tion of, upon the snow, Whitney, v, 
389. 
Lightning discharges, 
Trowbridge, vi, 195. 
Lilienthal, flying experiments, 
479. 
Lincoln, D. -F., 
oscillations, 
vii, 
glaciation in the 
Finger-Lake region, N. Y., iv, 290; | 
glacial erosionof New York, vii, 105. 
Lindenkohl, <A., post-glacial subsi- 
dence of middle Atlantic coast, i, 
489. 
Lindgren, W., gold deposit at Pine 
Hill, California, iv, 92; sodalite- 
syenite and other rocks from Mon- 
tana, v, 286; auriferous veins of 
California, vi, 201; auriferous con- 
glomerate, from the Sierra Nevada, 
viii, 275. 
Linebarger, C. E., colloid solutions, 
iii, 218; molecular masses of dex- 
trine and gum arabic, iii, 426; rela- 
tions between the surface tensions 
and chemical constitution of liquids, 
iv, 83; concentration of the ions 
as affecting the color of salt solu- 
tions, iv, 416; application of law of 
solubility to solutions of salts, ix, 
48; relations between temperature, 
pressure, etc., ix, 380. 
Lippmann, color photography, i, 326 ; 
iv, 75, 499; v, 68, 
Lister, J. J., geology of the Tonga or 
Friendly Islands, iii, 243. 
Liversidge, A., chalk and flints at the 
Solomon Islands, iii, 157; effect 
on gold of fungoid growths, iii, 245 ; 
magnetite in certain minerals and 
rocks, v, 76; minerals from New 
South Wales, 1, 426. 
Lobworms, Davison, iii, 162. 
GENERAL INDEX. 
[28 
Logarithmic tables, Jones, v, 362. 
London, Royal Society, v, 79. 
Low, D. A., Manual of Machine Draw- 
ing and Design, vi, 80. 
Luedeking, C., Missouri barite, ii, 
495 ; synthesis of crocoite and phe- — 
nicochroite, iv, 57; specific heat of 
liquid ammonia, v, 200. 
Lueders, H. L., structure of caout- 
choue, vi, 135. 
Luquer, L. MclI., optical examination 
of cacoxenite,vi, 154; three new 
analyses of sodalite, ix, 465, 
Lydekker, R., catalogues of the Brit- 
ish Museum. i, 330; Horns and 
Hoofs, vii, 158. 
Lyons, A. B., analysis of water from 
the salt lake of Oahu, ii, 522. 
M 
Macgregor, W., upraised Coral Islands 
off New Guinea, iv, 256. 
eo H., Science of Mechanics, ix, 
484. 
Mackinac Island, highest shore line 
on, Taylor, iii, 210. 
Mackintosh, J. B., polycrase of North 
and South Carolina, i, 423; miner- 
alogical notes, i, 438; obituary of, 
i, 444. 
Macroura, embryology and metamor- 
phosis in, Brooks and Herrick, v, 
166. 
Magnesium as source of light, Rogers, 
iii, 301. 
Magnetic circuits, joints, Ewing, iv, 
499, 
declination in the U. S. for 1890, 
Schott, ii, 178. 
and earth current phenomena, 
relation between, Ellis, iv, 424. 
effect of the sun upon the earth, 
Thomson, v, 69. 
field of the earth, Bigelow, 1, 81; 
permanent, Hibbert, iii, 482 ; map- 
ped by photography, Thwing, iv, 
d74., 
and ~ electrical 
Quincke, v, 254. 
needle, causes of variations, Bige- 
low, ii, 208. 
permeability, Klemencic, ix, 61 ; 
St. John, ix, 236. 
propertiesof liquid oxygen, vi, 73. 
screening of conducting media, 
Borgman, i, 516. 
variations, registration, Hschenha- 
gen, v, 524, 
Magnetism of asbestus, Bleekrode, 1, 
418. 
instruments, 
