21] 



VOLUMES XLI-L. 



499 



Hillebrand, W. F., Analysis of Sili- 

 cate and Carbonate Rocks, 49, 

 78, 



Hillsboro sandstone, Prosser, 41, 



435- 



Himalayas, structure of, Oldham, 

 45, 76. 



Hindu Achievements in Science, 

 Sarkar, 47, 230. 



Hogshooter gas sand, Berger, 48, 

 189. 



Holleman, A. F., Inorganic Chem- 

 istry, 43, 80. 



Holm, T., Studies in the Cypera- 

 ceas, no. XXVII, 48, 17; no. 

 XXVIII, 49, 195 ; no. XXIX, 49, 

 429; no. XXX, 50, 159. 



Holmes, S. J., Animal Biology, 47, 

 309. 



Holtedahl, O., Paleozoic forma- 

 tions of Finmarken, 47, 79, 85; 

 Paleozoic paleogeography in the 

 Arctic, 49, 1, 308. 



Hommel, W., Petrography, 50, 75. 



Honess, A. P., etching figures of 

 beryl, 43, 223; etching figures of 

 the dihexagonal alternating type, 

 45, 201. 



Hood, G. W., Horticulture, 41, 381. 



Hooker, Sir Joseph D., Life by F. 

 O. Bower, 50, 78. 



Hopewell-Smith, A., Histology of 

 the Mouth, 46, 480; 47, 148. 



Horse, early Pliocene one-toed, 

 Troxell, 42, 335. 



Hough, G. J., cocinerite, 48, 206. 



Houstoun, R. A., Theory of Color 

 Vision, 42, 433. 



Huff, W. J., estimation of phos- 

 phorous, etc., acids in mixture, 

 45, 9i; hydrolysis, etc., of hypo- 

 phosphoric acid, 45, 103; prep- 

 aration of hypophosphates, 46, 

 587. 



Hulett, G. A., water content of 

 coal, 43, 89; moisture content of 

 typical coals, 45, 174. 



Human Body, McMurrich, 41, 225. 



— remains, fossil, in Florida, Sel- 

 lards, 42, 1; 47, 358. 



— Skeleton, Walter, 47, 81. 

 Hume, G. S., Paleozoic outlier of 



Lake Timiskaming, 50, 293. 

 Hunt, W. F., melanochalcite, 41, 



211. 

 Huntington, E., World Power and 



Evolution, 48, 396. 

 Huronian, Minnesota, organic 



structures in, Grout and Brod- 

 erick, 48, 199. 



Hussakof, L., Palaeoniscid fish 

 from South Dakota, 41, 347; new 

 Cyprinid fish from British Co- 

 lumbia, 42, 18. 



Huxley, T. H., Physiology, 41, 151. 



Hydrogen, oxygen, etc., molecules 

 of, Silberstein, 43, 330. 



— spectra, Stark, 41, 465. See 

 CHEMISTRY. 



Hyman, L. H., Zoology, 49, 84. 



Ichikawa, S., Japanese minerals, 42, 



in; 44, 63; 48, 124. 

 Idaho, phosphate field, Mansfield, 



50, 53 5 Wasatch and Salt Lake 



formations, Mansfield, 49, 399. 

 Iddings, J. P., densities of igneous 



rocks, 49, 363. 

 ■ — obituary, 50, 316. 

 Illinois Coal, Parr, 41, 225. 



— Devonian, Savage, 49, 169. 



— geol. survey. See GEOL. RE- 

 PORTS. 



— waters of, chemical survey, 44, 

 160. 



Inbreeding and Outbreeding, East 



and Jones, 49, 385. 

 Index, Book Review, 49, 226. 



— Industrial Arts, 49, 455. 

 India, Board of Scientific Advice 



report 1914-1915, 42, 284; 1915- 

 19.16, 45, 239; 1916-1917, 47, 240; 

 1917-1918, 49, 388; 1918-1919, 50, 

 81. 



— Geology, Wadia, 49, 219. 



— See Hindu. 



Indices, refractive, new method of 



determining, 42, 498. 

 Induction, unipolar, Kennard, 43, 



332. 

 Industrial Arts Index, 49, 455. 

 Insects, Connecticut, Viereck, 44, 



83. See GEOLOGY. 

 Insurance and Annuities for Teach- 

 ers, Pritchett, 42, 169. 

 Interference of reversed spectra, 



Barus, 41, 414; fringes, rotation, 



Barus, 42, 63. 

 Interferometry, spectrum, Barus, 



41, 414; 42,63, 402; 43, 145. 

 Invertebrate Types, Morphology 



of, Petrunkevitch, 43, 421. 

 Ionium from uraninite, Gleditsch, 



4i, ii5. 



