502 



GENERAL INDEX. 



[24 



Lewis, J. V., Mineralogy, 41, 149. 



Lewis, W. C. McC, Physical Chem- 

 istry, 42, 75; 48, 160. 



Lewis, W. K., Industrial Chemis- 

 try, 42, 165. 



Library of Congress, report, 1915, 

 41, 379; 1917, 45, 150; 1918, 47, 

 150; 1918, 47, 147; 1919, 49, 309- 



Licks, H. E., Mathematics, 43, 415. 



Life, Chemical Sign of, Tashiro, 



44, ?4- 



— Origin and Evolution, Osborn, 



45, 77- 



Light, Animal, Harvey, 50, 474. 



— diffusion by gases, Fabry, 47, 70. 



— Electromagnetic Theory, Sil- 

 berstein, 47, 140. 



— polarization by gases, Strutt, 



47, 137. . 



— rays, signalling by, Wood, 49, 

 214. 



— scattering by dust free air, 

 Strutt, 46, 615; by solids, Strutt, 



48, 392. 



Lightning, ball, Mathias, 43, 248. 



Lillie, F. R., Fertilization, 48, 162; 

 Embryology, 49, 222. 



Lipari, rhyolites, Washington, 50, 

 446. 



Lockhart, L. B., American Lubri- 

 cants, 45, 418. 



Lochhead, W., Entomology, 47, 

 453- 



Loeb, J., Forced Movements, Ani- 

 mal Conduct, etc., 47, 81. 



Logarithmic, Tables, Hedrick, 50, 

 467. 



Lombard, R. H., determination of 

 dissociation pressures of sul- 

 phides, 43, 175. 



Long, Eleanor T., formation of 

 salt crystals, 43, 289. 



Loomis, F. B., Pleistocene locality 

 on Mt. Desert Island, 42, 399; 

 an unusual mastodon, 45, 438; 

 Eocene amphibian, 47, 217; 

 Ticholeptus rusticus and the 

 Oreodonts, 50, 281. 



Loughlin, G. F., crandallite, 43, 69. 



Lubricants, American, Lockhart, 

 45, 418. 



Lull, R. S., Triassic life o£ the Con- 

 necticut Valley, 41, I/17; func- 

 tions of the "sacral" brain in 

 Dinosaurs, 44, 471; fossil foot- 

 prints from the Grand Canyon, 

 45, 337', development of verte- 

 brate Paleontology, 46, 193; 

 obituary notice of S. W. Willis- 



ton, 47, 220; new Tertiary Artio- 

 dactyls, 50, 83; Carboniferous 

 footprints, Mass., 50, 234. 



M 



MacCurdy, J. T., War Neuroses, 



47, 147. 

 Mack, E., moisture content of coal, 



43, 89; 45, 174- 

 Mackenzie River Basin, Camsell 



and Malcolm, 49, 451; Valley 



Devonian, Kindle, 42, 246. 

 Maclean, H., Lecithin and Allied 



Substances, 46, 549. 

 MacMillan, W. D., mathematics of 



isostasy, 49, 311. 

 MacNutt, B., Physics, 43, 168. 

 Macpherson, H., Herschel, 50, 395. 

 Madagascar, minerals, 43, 174. 

 Magnesium, single-line radiation, 



McLennan, 42, 78. 

 Magnetic declination in the U. S., 



Jan. 1, 1915, Hazard, 41, 466. 



— field, effect on recombination 

 of ions produced by X-rays, 

 Jauncey, 42, 146. 



— susceptibilities of gases, Honda 

 and Okubo, 49, 377. 



— Tables and Charts for 1915, 

 Hazard, 45, 236. 



Magnetism, and Electricity, Kemp- 

 son, 41, 146. 



— Theory of, Gans, 41, 464. 

 Mahin, E. G., Quantitative Analy- 

 sis, 47, 440. 



Maine, Champlain submergence, 

 Meserve, 48, 207; Pleistocene, 

 Blaney and Loomis, 42, 399. 



Man, fossil remains, Vero, Florida, 

 Sellards, 42, 1; 47, 358. 



Manganese minerals, San Jose, 

 Calif., Rogers, 48, 443. 



Mann, C. R., Engineering Educa- 

 tion, 46,, 772. 



Mansfield, G. R., western phos- 

 phates of the U. . S., 46, 591; 

 Wasatch and Salt Lake forma- 

 tions of Idaho, 49, 399; Triassic 

 and Jurassic in Idaho, 50, 53. 



Maps, Topographic, Finch, 50, 236. 



Margerie, translation of Suess, 47, 



235. 

 Marsh Collections of vertebrates, 



Lull, 50, 83; Thorpe, 50, 207; 



Troxell, 49, 391; 50, 243, 361, 431. 

 Marshall, C. E., Microbiology, 43, 



421. 



