29] 



VOLUMES XXI-XXX. 



525 



Hill W. K, heat produced by reversals 



of magnetization, vii, 58. 

 Hillebrand, W. F, minerals in basalt of 

 Table Mountain, iii, 452 ; iv, 129. 

 minerals from Pike's Peak, iv, 281. 

 cryolite, Col., vi, 271, 496. 

 lollingite, cosalite, etc., Col., vii, 349. 

 guitermanite, zunyite, Col., ix, 340. 

 Hills, B. 0., Jura-Trias of southwestern 

 Colorado, iii, 243. 



dioptase from Arizona, iii, 325. 

 extinct glaciers, Colorado, vii, 391. 

 kaolinite from Colorado, vii, 4*72. 

 Hinde, G. J., crinoids with articulating 

 spines, ix, 339. 



Silurian Annelids of Gotland, v, 392. 

 Catalogue of Fossil Sponges of the 

 British Museum, vii, 492. 

 Receptaculidas, ix, 69. 

 Hinrichs, G., cold of January, 1883, 

 in Iowa, v, 239. 

 Q m Hitchcock. &■ H, lenticular hills, vii, 72. 

 crystalline rocks of Alabama, xxx, 

 278. 



Geological map of United States, i, 

 505. 



Geological section across N. Hamp- 

 shire, and Vermont, ix, 66. 

 Hitchcock, C. H., volcanic eruption in 



Hawaii, ii, 228. 

 Hitchcock, R., causes of variation, viii, 49. 

 Synopsis of the Fresh- water Rhizo- 

 pods, iv, 157. 

 Hoffmann, G. C, Canada samarskite, iv, 

 475. 



coals and lignites of the Northwest 

 Territory, xxx, 77. 

 Holden, E. S., light of telescopes used 

 as night-glasses, ii, 129. 

 comet b, 1881, ii, 260. 

 transit of Mercury, 1881, iii, 48. 

 rings of Saturn, iii, 387. 

 nucleus of comet of 1882, iv, 435. 

 observations of the transit of Venus, 

 v, 71. 



Director of Washburn Observatory, 

 i, 254. 



Nebula of Orion, iv, 302. 

 Holder, J. B., Atlantic Right Whales, v, 



482. 

 HolmoM, S. W., method for calibrating 



thermometers, iii, 278. 

 Hooker, J. D., Icones Plantarum, iii, 71. 

 Flora of British India, v, 162. 

 Genera Plantarum, v, 481 ; vi, 245. 

 Student' sFlora of the British Islands, 

 viii, 238. 

 Horse, see Zoology. 

 Hough, F. B., Journal of Forestry, iv, 

 400. 



Elements of Forestry, iv, 408. 



Houzeau, J. C, Bibliographie generals 



de l'Astronomie, i, 253 ; iv, 76. 

 Hovey, H. C, danger from coal-dust in 

 mining, ii, 18. 



American Caverns, iv, 238. 

 Hudson River, on waters of, ix, 347. 

 Huggins, W., photograph of spectrum of 

 nebula of Orion, iii, 335. 



photographing the solar corona, v, 

 126; vii, 27. 

 Hull, E., Geological maps, v, 310. 

 Hungerford, K, snow and ice under 



pressure, iii, 434. 

 Hunt, T. S., celestial chemistry, iii, 123. 

 the decay of rocks, vi, 190. 

 origin of crystalline rocks, viii, 72. 

 Geological History of Serpentines, 

 vii, 489. 



The Taconic Question, vii, 490. 

 Huntington, 0. W., atomic weight of 

 cadmium, ii, 148. 



spectrum of arsenic, ii, 214. 

 chemical contributions, vi, 145. 

 Hutton, F. W., origin of the fauna and 



flora of New Zealand, ix, 343. 

 Huxley, T. H, the salmon disease, iv, 74. 

 Hyatt, A., Fossil Cephalopods, vii, 488. 

 Hydrates of the sulphydrates, v, 307. 

 Hydrocarbons, structure of, i, 87. 



of American petroleum, i, 137. 

 Hydrogen, action of nascent, v, 306; vi. 

 318. 



peroxide, action of, ix, 333. 

 persulphide, xxx, 482. 

 sulphide, determination of, ix, 333. 

 phosphide, spontaneously inflamma- 

 ble, iii, 144. 

 Hygrometer, condensing, Hazen, xxx, 



435: 

 Hyoscin, i, 400. 

 Hyoscyamine, i, 400. 

 Hyponitrites, vii, 405. 



Ice at high temperatures, i, 385; ii, 148, 

 220! 



effect of pressure on, iii, 434 ; vi, 68. 



elasticity of, Trowbridge, ix, 349. 



Greenland and antarctic, Croll, vi, 

 488. 



living organisms in, Leidy, viii, 476. 



of buried glacier in Alaska, i, 107. 



physical properties of, vii, 62 ; ix, 

 335. 



see also Glacial. 

 Idaho, native lead in, v, 161. 

 Iddings, J. P., volcanoes of northern 

 California, etc., vi, 222. 



volcanic rocks of the Great Basin, 

 vii, 66, 453. 



