528 



GENERAL INDEX. 



[32 



Lead peroxide, preparation of, iv, 466. 

 Leaves, see Botany. 

 LeConie. John, sound-shadows, in water, 

 iii, 27. 



jointed structure, iii, 233. 

 attractions and repulsions of small 

 floating bodies, iv, 416. 



physical studies of L. Tahoe, vii, 145. 



horizontal motions of floating bodies 



and the theory of capillarity, vii, 307. 



LeConte. Joseph, vein-formation, iv, 23; 



v. 424 ; vi, 1. 



Sight, noticed, i. 405. 

 Lectures to the employes of the Balti- 

 more and Ohio R. R., vi, 24S. 

 Leffmann, H.. geyser waters and deposits 

 of Yellowstone Park. v. 104, 351, 400. 

 Lefroy, J. EL, Magnetic Survey of Can- 

 ada, vii, 320. 

 Lehman?i. J., die Entstehung der alt- 

 krystallinen Schiefergesteine.viii. 392. 

 Leidy. J., organisms in ice, viii, 476. 



Rhinoceros and Hippotherium from 

 Florida, ix, 418. 

 Lekene. vi, 403. 



Leonhard. A. Y., Mineralogy of Mis- 

 souri, iv, 71. 

 Lesley. J. P.. Catskill plateau in Penn., 

 v. 472. 



orebedsof CentreCo., Penn., viii. 397. 

 Pennsylvania Geol. Reports, i, 153; 

 ii, 78; v, 472 ; vii. 69, 71, 407 ; viii'. 

 396. 



Atlas of Pennsylvania, ix, 340, 496 ; 

 xxx, 160. 

 Lesquereux L., Coal Flora of Pennsyl- 

 vania, i. 329. 409 ; viii, 470. 



Mosses of N. America, viii. 155. 

 Cretaceous and Tertiary Flora, ix. 

 260. 

 Levier, Plantes a Fourmis, xxx, 245. 

 Levison. W. G..' the spectro-polariscope 



in sugar analysis, iv. 469. 

 Leiuis. H. C, helvite from Virginia, iv, 

 .155. 



supposed glaciation south of the 

 terminal moraine, viii. 276. 



Pennsylvania Geol. Report, viii. 231 . 

 Lichtenberg's figures, iii. 240. 

 Liebig, bust of. vii. 159. 



statue, method of cleaning, vii, 316. 

 Liebig. G. A., specific heat of water, vi, 57. 

 Light. Tait, noticed, viii. 310. 

 absorption of, iii. 50, 486. 

 and electricity, iv, 145. 

 effect of, upon electrical resistance 

 of metals, viii, 133. 



electro-magnetic theory of, iii. 262, 

 460 ; v, 107 ; vi. 320. 



influence of, on chemical reactions, 

 ix. 400. 



Light, interference phenomena of, Michel- 

 son, iii, 395. 



penetration of. in Lake Geneva, ix, 

 257 ; in Lake Tahoe, vii, 145. 

 in sea water, ix, 495. 

 spectroscopic observations with 

 monochromatic, iii, 322. 



standard of, v, 79 ; viii, 72, 150 ; 

 xxx, 128. 



velocity of, ii. 316. 

 see also Refraction, Polarization and 

 Spectrum. 

 Lightning conductor, space protected by, 

 i, 141. 

 tubes, see Fulgurites. 

 Lignite, see Geology. 

 Lille, infection of the waters of. iv, 318. 



sulphurous oxide in air of. vii, 54. 

 Limpricht. Rabenhorst's Kryptogamen 



Flora, xxx. 488. 

 Lindberg. S. O., Peat-mosses, iv, 156. 

 Lindenkohl, A., dimensions of the Gulf 

 of Mexico, viii, 320. 



geology of sea bottom in approaches 

 to New York Bay, ix, 475. 

 Lindstrom, G., Silurian Corals, iv, 295. 

 Linnean Society, Journal of, iv, 299. 



of New York. Transactions of, 

 iv. 478; v, 239; viii, 319. 

 Liquefaction from reaction of solids, 



Walton, ii, 206. 

 Licpiid state of matter, limit of, iv, 289. 

 Liquids, evaporation and molecular 

 weights of, ix. 163. 



measurement of resistance of. xxx, 

 484. 



reciprocal solutions of, iv, 464. 

 surface tension of, iv, 287. 

 Litmus, coloring matter resembling, ix, 



166. 

 Littrow form of spectroscope, iv, 60. 

 Liveing. G. D.. on recent progress in 



chemistry, iv. 312. 

 Liversidge. torbanite of N. S.Wales, ii 32. 

 Minerals of N. S. Wales, not., vi, 76. 

 Lloyd, J. U., Drugs and Medicines of 



North America, viii, 474; xxx, 246. 

 Loeb, if., chemical contributions, vi, 142. 

 Logan, W. E., Life of, Harrington, v, 



386. 

 Long Island, see Geology and Glacial. 

 Long, J. H., indices of refraction of com- 

 pound ethers, i, 279. 

 Loomis, JS., contributions to meteorolo- 

 gy," i, 1 ; ii, 1 ; iii, 1 ; iv, 1 ; v, 1 ; vi, 

 442; viii, 1, 81; xxx, 1. 

 Lord, E., Comstock Mining and Miners, 



xxx, 318. 

 Lorenzen, J., sodalite-syenite minerals, 



Greenland, v, 158. 

 Lory, the occidental Alps, ix, 417. 



