574 



INDEX. 



Nickel and cobalt incapable of being ren- 

 dered inactive, 547. 

 Nitric acid, its action on certain metals, 



554. 

 Noad (H. M.) on the hydrates of baryta 



and strontia, 301. 

 Normandy, geological character of the 



coast of, 210. 

 Numbers, theory of, new demonstration of 



an original proposition in, 456. 

 Oceans, Pacific and Indian, areas of ele- 

 vation and subsidence in the, 307. 

 Ogilby (W.) on some hollow-horned Ru- 

 minants, 124; arrangements of the Ru- 

 minantia, 469. 

 Opium, chemical history of, 335. 

 Optical theory of crystals, Fresnel's analy- 

 tical reduction of, 462. 

 Organic acid, on a new, 564. 

 Orobanche, on the botanical affinities of, 



409. 

 Osier (Mr.) on a new registering anemo- 

 meter and rain gauge, 476. 

 Owen (R.) description of two Entozoa in 

 the stomach of the tiger, 128; on the 

 cranium of the Toxodon platensis, 205. 

 Oxalhydric acid of M. Guerin,on the, 142. 

 Oxide of lead, on the solubility of, in wa- 

 ter, 221. 

 Palms, internal structure of the wood of, 



553. 

 Parabola, on Prof. Wallace's property of 



the, 302. 

 Paramorphia, discovery of, poisonous pro- 

 perties of, 335. 

 Peligot (M.) on carbovinate of potash, 



320 ; on a new organic acid, 564. 

 Pelletier ( M.) on the action of iodine upon 

 the vegetable alkalies, 216 ; on the ele- 

 mentary composition of paramorphia, 

 335. 

 Penrhyn slate quarries, on a trap dyke in 



the,' 10 3. 

 Perameles, on a new species of the genus, 



198. 

 Peroxide of mercury, action of ammonia 



on the, 504. 

 Persian gulf, on the extent of the, 66. 

 Phacolite and levyne, identity of with cha- 



basie, 12. 

 riilorrizin, properties of, 337. 

 Physeter macrocephalus, 196. 

 Physics, on M. Mossotti s theory of, 496. 

 Physiology of plants, 156, 381, 435. 

 Phytochemistry, on the progress of, 333. 

 Plants, on structure in the ashes of, 13, 

 413; chemistry of, 156; siliceous contents 

 of, 339; on the symmetry, arrangement, 

 and characteristics of the nature of, 

 383 ; on the combination, structure, and 

 contents of the cells of, 435 ; action of 

 solar light on, 537 ; on the conservation 

 of, 566. 

 Plastic clay, on the strata usually termed, 

 104. 



Plumbago, conversion of iron into, 321. 



Poison, the Ipoh or Upas, used by the Ja- 

 coons, 193. 



Polygalic acid, 561 ; modified, 562. 



Polypi, on the structure of the higher forms 

 of, 189. 



Port Louis, meteorological deductions 

 made at, 97. 



Portlock (Capt.) on the occurrence of Ana- 

 tifa vitrea on the Irish coast, 135. 



Potash, carbovinate of, 320. 



Potassium and mercury, bromo-cyanide 

 and chloro-cyanide of, 340. 



Powell (Prof.) on the dispersion of light, 

 477. 



Pratt (S.) on the geological character of 

 the coast of Normandy, 210. 



Precipitate, white, on the powder formed 

 by the action of water on, 428 ; products 

 of the action of alkalies in excess on, 433. 



Prestwich (J. jun.) on some elevations of 

 the coast of Banffshire, 209. 



Prideaux (J.) on the deduction of the 

 dew-point, 54. 



Protochloride of mercury, action of am- 

 monia otrihe, 504. 



Pyrosmalite, crystalline form of, 261. 



Quassin, preparation of, in a pure state, 336. 



Quetelet (M.) on shooting stars, 268 ; on 

 the height, motion, and nature of shoot- 

 ing stars, 270. 



Quevenne (M.) on polygalic acid, 561 ; 

 on modified polygalic acid, 562. 



Quinia and iodine, 218. 



Quinia, hydriodate of, 218; iodate of, 

 218; elementary composition of, 335. 



Rain gauge, new, 260, 476. 



Raphides, composition of, 339. 



Reade (Dr.) on a permanent soap-bubble, 

 375. 



Reade (Rev. J. B.) on structure in the 

 ashes of plants, and their analogy to the 

 osseous system in animals, 13,413; on 

 the composition of vegetable membrane 

 and fibre, 42 J ; reply to the objections 

 of Professors Henslow and Lindley, 424. 



Regnault (M.) on sulphonaphthalic acid, 

 565. 



Reid (Mr.) on a new species of the genus 

 Perameles, 198. 



Reimsch (M.) on chlorosulphurets of lead, 

 copper, bismuth, and zinc, 560. 



Resins, chemical examination of, 158. 



Respiration of plants, on, 537 ; of insects, 

 189. 



Itetingle, new carburets of, 404. 



Retinnapthe, new carburets of, 404. 



Retinole, new carburets of, 404. 



Ritchie (Prof.) on the conducting powers 

 of wires for electricity, 192 ; on the heat 

 in metallic and liquid conductors 193. 

 Rive (A. de la) researches into the cause 



of voltaic electricity, 274. 

 Robiquet (M.) on gallic acid, 323. 

 Rose (M.) on the combinations of ammo- 



