42 



GfiNEKAL INDEX OF VOLS. 1 12 OF THE 



platensis, xi. 205 ; the Wollastou me- 

 dal awarded to, xii. 433 ; on the dislo- 

 cation of the tail in Ichthyosauri, xii. 

 590; on the cranium of an orang 

 outang, xii. 599 ; examination of a 

 foetal kangaroo, xii. 600. 



Owl, short-eared, habits of, xii. 104. 



Oxacids, their action on pyroxylic spirit, 

 vi'. 538 ; viii. 85. 



Oxalhydric acid, iv. 74 ; xi. 142. 



OxaUc acid, action of chloride of sodium 

 upon, V. 445 ; its action on the sul- 

 phates of iron and copper, ix. 155. 



Oxalo-nitrate of lead, xii. 459. 



Oxford, meeting of the British Associa- 

 tion at, i. 77. 



Oxide of chromium, crystallized, viii. 

 175; of lead, on the solubility of, in 

 water, xi. 221 ; of silver and oxide of 

 lead, definite coml)ination of, xii. 217. 



Oxides :— carbonic, on Prof. Mitchell's 

 method of preparing, vi. 232 ; metal- 

 lic, separation of, vi. 234. 



and salts, their solubility in mu- 

 riate and nitrate of ammonia, x. 95, 

 178, 333. 



Oxychloride of antimony, vii. 332. 



Oxygen in the atmosphere, on the quan- 

 tity of, xii. 397. 



Oxy-'hydrogen jet, on a new, ii. 57. 



Ozocerite, composition of, xii. 389. 



" T3 ^•''' ^^ chemical decomposition 

 Jl • effected by the magneto-elec- 

 tric current, i, 161 ; on magneto-electri- 

 city and electro-magnetism, iii. 18. 



Painting in enamel, art of, x. 442 ; on 

 glass, on the art of, ix. 456. 



Palaeoniscus Egertonii, xii. 86. 



Palaeontology, new discoveries in, ix. 158, 

 392; X. 318. 



Palms, internal structure of the w^ood of, 

 xi. 553. 



PalodeVaca, pericarp and nuts of, vii. 501. 



Paper, hydrographic, iii. 466 ; made from 

 turf, vii. 401. 



Papuans, on the history of the, i. 466. 



Parabola, on a property of the, ix. 100 ; x. 

 32 ; xi. 302. 



Parabolic curves, the arcs of, v. 455. 



Paraffin and eupion, on, i. 402 ; analysis 

 of, ii. 78. 



Parallelogram of forces, demonstration of 

 the, V. 39. 



Paramorphia, discovery of poisonous pro- 

 perties of, xi. 335. 



Parilline and parillinic acid, analysis of, 

 V. 465. 



Parish (W.) on the effects of the earth- 

 quake waves on the coasts of the Pa- 

 cific, viii. 181. 



Parrot, new species of, xii. 215. 



Patents, list of new, i. 167 ; on the law of, 



i. 212. 

 Patent laws, proposed modification of, iii. 



316. 

 Payen (M.) on the action of tannin, &c. 

 on the roots of plants, v. 157 ; on a 

 new acetate of lead, xii. 133. 

 Peafowl, habits of the, vii. 228. 

 Pearson's (Dr.) " Introduction to Prac- 

 tical Astronomy," i. 370, 450. 

 Pekin, magnetical and meteorological ob- 

 servations at, i. 130. 

 PeUcan, anatomy of the, vii. 154, 223. 

 Peligot (M.) on camphor, x. 420 ; on 

 carbovinate of potash, xi. 320 ; on a 

 new organic acid, xi. 564. 

 Pelletier (M.) on the action of iodine on 

 organic salifiable bases, ix. 76 ; x. 500 ; 

 xi. 216 ; on the elementary composi- 

 tion of paramorphia, xi. 335. 

 Pelouze (M.) on an athereal oil of wine, 

 X. 417 ; on the action of presence, x. 

 489 ; on the products of the decompo- 

 sition of cyanogen in water, xii. 339. 

 Peraberton's (Dr.) translation of New- 

 ton's Principia, inquiry relative to, viii. 

 441. 

 Pembrokeshire, geology of, viii. 561, 567, 

 Pemphredon lugubris, P. Morio, and P. 



unicolor, xii. 17. 

 Pendulum, Mr. Daily on the, i. 379 ; in- 

 variable experiments with, i. 420 ; ii. 

 458 ; experiments on tlie seconds, ii. 

 244, 344, 434 ; Captain Forster's ex- 

 periments on the, iv. 230. 

 Penguin, habits of, v. 231 ; anatomical 



description of, vii. 519. 

 Penrhyn, on the granite found near, ii. 

 321, 322. 



slate quarries, on a trap dyke in the, 



xi. 103. 

 Pentacrinus Europseus, vii. 495. 

 Perameles, on a new species of the genus, 



xi. 198. 

 Per-iodic acid, properties of, x. 325. 

 Periodide of iron, ix. 79. 

 Peroxide of iron, separation of, from pro- 

 toxide of manganese, from protoxides 

 of iron, from oxides of cobalt and 

 nickel, i. 85 ; as an antidote to arse- 

 nious acid, vi. 237. 



of bismuth, iii. 387. 



of mercury, action of ammonia on, 



xi. 504. 

 Persian Gulf, on the former extent of, iv. 

 107 ; V. 244 ; viii. 506 ; ix. 34 ; xi. 66 ; 

 advance of land in, vi. 401 ; vii. 41, 

 192, 250. 

 Perspective, a new instrument as a means 



of instruction in, iii. 464. 

 Petersburgh, St., meteorological observa- 

 tions made at, ii. 260. 



