m 



VOLUMES I-X. 



501 



Gravitation constant and mean 

 density of the earth, 6, 503. 



— determined by pendulum, Putnam, 

 i, 186. 



Gray Herbarium of Harvard Univer- 

 sity, Contributions, No. xi, Green- 

 man, 4, 249. 



Greely, A. W., Arctic Discoveries, i, 

 403. 



Greenland, glaciation in, Tarr, 4, 

 325 ; Barton, 4, 395. 



— marine alga? of, Rosenvinge, 7, 400. 



— new minerals from, 10, 323. 

 Greenleaf, J. L., hydrology of the 



Mississippi, 2, 29. 



Gregory, H. E., volcanic rocks of 

 Temiscouata Lake, Quebec, 10, 

 14. 



Groth, P., Mineralogical Tables, 5, 

 154 ; Zeitschrift fur Krystallo- 

 graphie, Index, 9, 229 ; 10, 84. 



Gulf stream water, origin, Cleve, 9, 

 310. 



Guthe, K. E., measurement of self- 

 inductance, 5, 141. 



H 



Hague, A., age of the igneous rocks 

 of the Yellowstone, I, 445. 



Hall, C. W., rocks of S. W. Minne- 

 sota, 10, 168. 



Hall, James, obituary, 6, 284, 437. 



— Dictyospongidae, 9, 69, 224. 

 Hall effect in an electrolyte, 6, 504 ; 



Poincare, 7, 312 ; in names, Marx, 

 10, 395. 



Hallock, W., underground tempera- 

 tures at great depths. 4, 76. 



Hardin, W. L., Liquefaction of 

 Gases, 9, 221. 



Hardness of minerals, Auerbach, 2, 

 390 ; Jaggar, 4, 399. 



Harkness, W., achromatic objectives 

 of telescopes, 9, 287. 



Harmonic analyzer, new, Michelson 

 and Stratton, 5, 1. 



Harper's Scientific Memoirs, 6, 199, 

 504 ; 7, 69, 402 ; 8, 400. 



Harrington, B. J., new alkali horn- 

 blende and titaniferous andradite, 

 Ontario, 1, 210. 



Harris, G. D., the midway stage of 

 the Eocene, 2, 86 ; key to the Upper 

 Devonian, 9, 156. 



Hart, J. H., action of light on mag- 

 netism. 10, 66. 



Hart-well, J. B., separation of nickel 

 from cobalt, 10, 316. 



Harvard College Observatory, 1, 75 ; 

 3, 252, 492 ; 5, 80, 320 ; 8, 87 ; 9, 

 311. 



Hastings, C. S., telescope objective 

 7, 267 ; General Physics, 7, 314. 



Haswell, W. A., Text book of Zool- 

 ogy, 5, 319 ; Manual of Zoology, 9, 

 390. 



Hatcher, J. B., recent and fossil 

 tapirs, 1, 161 ; geology of southern 

 Patagonia, 4, 246, 327 ; sedimentary 

 rocks of Southern Patagonia, 9, 85. 



Havens, F. S., separation of alumi- 

 num from iron, 2, 416 ; of aluminum 

 and beryllium, 4, 111 ; of aluminum 

 by hydrochloric acid, 6, 45 ; of 

 nickel and cobalt by hydrochloric 

 acid, 6, 396 ; volatilization of iron 

 chlorides in analysis, 7, 370 ; sep- 

 aration of iron, 8, 217. 



Hawaiian soils, chemical composi- 

 tion, Lyons, 2, 421. 



Haworth, E., deformation of strata 

 in Kansas, 2, 368. 



Hay, O. P., species of Ichthyodectes, 

 6, 225 ; unknown species of Sauro- 

 cephalus, 7, 299. 



Headden, W. P., tin compounds from 

 an old furnace in Cornwall, 5, 93. 



Heald, F„ DeF., analytic keys of 

 North American Mosses, 3, 354. 



Hearing, limits of, Koenig, 9, 66, 148. 



Heat of combustion, Mendeleeff, 4, 

 319. 



— conductivity, relative, Voigt, 5, 

 223 ; of glass, Winkelmann, 7, 471. 



— long waves of, separated by quartz 

 prisms, Rubens and Aschkinass, 7, 

 312. 



— insulators for, Hempel, 8, 74. 

 Heliostat, Mayer, 4, 306. 

 Helium, see CHEMISTRY. 

 Hereford earthquake of December 



17, 1896, Davison, 8, 235. 

 Herrick, F. H., abnormal hickory 



nuts, 2, 258. 

 Herrmann, Steinbruchindustrie, 8, 



81. 

 Herschels and Modern Astronomy, 



Gierke, 1, 76. 

 Hershey, O. H , Silveria formation, 



2, 324; Florencia formation, 4, 90. 

 Hertzian waves, reflection, L. De- 

 Forest, 8, 58. See Electric. 

 Hervey, Colors of Flowers, 8, 471. 

 Hidden, W. E., rhodolite, 5, 294; 



sperrylite in North Carolina. 6, 381 ; 



twinned crystals of zircon, 6, 323 ; 



associated minerals of rhodolite, 6, 



463 ; ruby in North Carolina, 8, 



370 ; iron meteorite, Hayden Creek, 



Idaho, 9, 367. 

 Hilgard, E. W., geologic efficacy of 



alkali carbonate solution, 2, 100. 



