ORE 
Opelousas, geological notice of, 
xxxv, 344. 
Ophisaurus ventralis, 1, 262. 
Opiamon, xix, 205. 
Opianic acid, xlvii, 196; xlix, 205. 
Opiano-sulphurous acid, xlix, 205. 
Opium, constitution of, xxviil, 359. 
, mode of detecting minute 
quantities of, R. Hare, xii, 290. 
, observations and experiments 
on, G. W. Carpenter, xiii, 17. 
, English, viii, 889; x, 194. 
, paramorphine in, xxiv, 3874. 
, thebaine in, xxx, 379. 
Opossum, remains in the Stonesfield 
slate, xxvil, 4125 xxxvil, 228. 
Optics, notice of D. Brewster's 
Treatise on, xxiv, 389. 
Optical amusements, xvi, 398. 
experiment, exhibiting the 
blood vessels of the eye, xXxI, 
166. 
deception, instrument for ex- 
hibiting a certain, E. S. Snell, 
xxvii, 310. 
instruments, xix, 390. 
properties of saccharine juice, 
Biot, xxiv, 379. 
structure of minerals, notice 
ix, 304. 
surgery, xvill, 179. 
trap, v, 200. 
Orang Outang, account of, xv, 161. 
Orange County of New York, nat- 
ural history of, J. Van Rensse- 
laer, xiii, 224. 
, mineral notices of, C. U. 
Shepard, xxi, 8214 
——, J. Fowler, ix, 
of, 
242. 
Orangeries, v, 190. 
Orchis tribe, synonymy of some spe- 
cies of, A. Gray, xxxviii, 306. 
spectabilis, monstrous flower 
of, J. W. Bailey, xxxv, 117-£ 
Ordinaire, J. J., method of teaching 
Latin used by, v, 182; vii, 388. 
, on public instruction, vii, 199, 
383. 
Oregon, fossil bones from, H. C. 
Perkins, xiii, 1386.f 
190 
osM 
Oregon, fossil bones from, oryctero- 
therium, &c., R. Harlan, xliv,79. 
, geological and miscellaneous 
remarks on, J. Ball, xxviii, 1. 
, climate of, and a meteorolog- 
ical register kept at Fort Van- 
couver, 1832, 1883, J. Ball, 
XX VAteSou 
Orenburg, salt steppe of, xliv, 205. 
Orford brown tourmaline, xxxiv, 
204. 
Organic remains, see Fossil. 
Oriani, B., death of; xxv, 186. 
Orientals, style of, v, 181. 
Oriental minerals, F. Hall, xxxiii, 
249. 
Ornithichnites, see Footprints. 
Ornithological terms, improved, xxi, 
162. 
Ornithology, work on, by T. Nuttall, 
noticed, xx, 154; xxi, 178; xxv, 
424, 
, see farther under Zoology. 
Orr, I., on the process of memory, 
Xxili, 278. 
, on the formation of the uni- 
verse, vi, 128.f 
, on infinites, v, 326. 
, mathematical propositions by, 
xxiv, 395. 
Orthite, ix, 376. 
Orthocerata,see ZooLocy, Mollusca. 
Orthography, English, proposals for 
improving, xxxix, 197, 
Orycterotherium, xlii, 136f, 392; 
xliv, 69f; xlv, 210. 
Missouriense, xliv, 69f; xlv, 
210. 
Origonense, xlii, 136/; xliv,79. 
Osborn, M. W.and NV. S., on a vi- 
brating dam, xliv, 866. 
Osler, F., on indications of his ane- 
mometer, xxxviil, 103. 
Osmelite, xv, 388. 
Osmium, atomic weight and com- 
pounds of, E. Fremy, xlix, 199. 
, method of obtaining, from the 
platinum residue, F. Wéohler, 
xxvi, 371. 
, means of obtaining pure, E. 
Fremy, xviii, 185. 
