41] 



VOLUMES XXI-XXX. 



537 



Obituary — 



Angus, viii, 79 ; Spottiswoode, Wil- 

 liam, vi, 160. 



Tennant, J., i, 338; Thomson, C. Wyville, 

 iii, 338, 496 ; Tylor, Alfred, ix, 268. 



Vaux, William S., iii, 498. 



Warren, Gen. G. K., iv, 240; Watson, J. 

 O, i, 62 ; Watts, Henry, ix, 172, 268; 

 Wheatley, Charles M., iii, 498 ; Wil- 

 liamson, John, ix, 172; Wood, Al- 

 phonso, iii, 333 ; Wood, Searles Val- 

 entine. Jr., ix, 348 ; Wright, Charles, 

 xxx, 247. 



Objectives, color correction of double, 



Hastings, iii, 167. 

 Observatory, Argentine, Zone Catalogue 

 of, iv, 302; ix, 79. 



Cincinnati, publications of, vii, 421. 



Report of. xxx, 404. 

 Harvard, Annals of, iv. 402 ; ix, 498. 



Report of, iii, 161. 

 Morrison, longitude of, iii, 77. 

 U. S. Naval, observations at, ii, 

 416; iii, 160, 495; iv, 301, 403, 488; 

 v, 240. 



Washburn, publications of, iv, 403. 

 Ocean basins, origin of, ix, 336. 

 * deep-sea fauna, viii, 319. 

 deposits, Verrill, viii, 379. 

 soundings of the Blake, iv, 447, 479. 

 temperatures, arctic, i, 163. 

 water, carbonic acid in, iii, 53 ; xxx, 

 387. 



composition of, xxx, 385. 

 Oceanic life, distribution in depth, Fuchs, 



v, 163. 

 Octosulphates. ix, 165. 

 Odontornitb.es, noticed, i, 255. 

 Ohio, bituminous matter in black shales 

 of, iv, 171. 



carboniferous snail from, i, 125. 

 geological reports, v, 311; ix, 68. 

 glacial boundary in, vii, 410. 

 glaciated area of, Wright, vi, 44. 

 well at Cleveland, xxx, 316. 

 Ohio River flood of 1884, vii, 419. 

 Ohm, method of determining, vi, 321. 

 determinations of, ii, 484; v, 309; 

 viii, 71 ; ix, 168. 



in terms of mech. equivalent 

 of heat, xxx, 22. 

 Oil, effect of on waves, v, 231. 



see Geology. 

 Ontario, skeleton of whale from, v, 200. 

 TJtica fossils, iv, 278. 

 see Lake Ontario, under Geology. 

 Optics, physiological, Backhouse, vi, 305. 

 496; Nichols, viii, 243; xxx, 37 

 Peirce, vi, 299; Stevens, ii, 358, 443 

 iii, 290, 346; iv, 241, 331 ; vi, 399. 

 6 



Oregon, fulgurite from Mt. Thielson, 

 Diller, viii, 252. 

 lakes of, Dowell, i, 415. 

 nickel ore in, iv, 1 55. 

 volcanoes of, Hague, vi, 222. 

 Ores, see Geology. 



Organic compounds, heat of combustion 

 of, xxx, 154. 



liquids, physical properties of, iii, 

 234. 



critical temperatures of, iii, 483. 

 Orton, E., bituminous matter in Ohio 

 black shales, iv, 171. 



deep well at Cleveland, xxx, 316. 

 Ohio Geological Report, ix, 68. 

 Osborn, H F., Orthocynodon from the 

 Eocene, iv, 223. 



Loxolophodon and Uintatherium, ii, 

 235. 

 Osborne, T. B., quantitative determina- 

 tion of niobium, xxx, 329. 

 Owen, R., uterine ova of Echidna, ix, 74. 



Cephalopoda, iii, 72. 

 Oxidation, spontaneous, of metals, ii, 217. 

 Oxide, pernitric, i, 398 ; iv, 58. 

 Oxides, effect of, in the decomposition of 

 potassium chlorate, iii, 236. 



reduction of metallic, by electricity, 

 xxx, 308. 

 Oxygen, boiling point of, vii, 319; viii, 

 150. 

 lines, telluric, vi, 477. 

 new absorbing agent for, xxx, 155. 

 production of active, iii, 410. 

 simple method of liquefying, xxx, 

 73. 



variations in amount of, in the air, 

 Morley, ii, 417, 429. 

 Oyster,. J. H., Catalogue of Plants, xxx, 



85, 

 Ozocerites, Caucasian, vi, 403. 

 Ozone, absorption-spectrum of, iv, 56. 

 causing the luminosity of phospho- 

 rus, ii, 145. 



liquefaction of, iv, 57. 



presence of, in atmosphere, i, 66. 



researches on, i, 233. 



Pacific Ocean, coral reefs of, bathymetric 

 map of part of, and movements of 

 crust beneath, xxx, 89. 



analysis of coral limestone from, 

 xxx, 244. 



currents of, xxx, 185. 

 Packard, A. S., new Carboniferous Lim- 

 uloids, xxx, 401. 



embryology of Limulus, xxx, 401. 



Zoology, noticed, i, 162. 



The Hessian Ply, ii, 415. 



