INDEX. 



547 



Muriatic acid, method of testing its pre- 

 sence in hydrocyanic acid, 400. 



Naphtha, on a fluid obtained in the ma- 

 nufacture of, 395 ; analysis of, 429. 



Newton's rings, on coloured bands ob- 

 served in examining, 363, 474. 



Nicol (W.), structure of Conifer ee, 496. 



Nicotin, Prof. Davy, on, 393. 



Nidalia, a new genus of corals, 331. 



Nixon (J.), verification of Capt. Lloyd's 

 levelling instrument, 364. 



Norfolk, geology of, 171, 274, 353, 370, 

 463, 464. 



Object glass, double achromatic, 161. 



Oil, of cinnamon, 74 ; of turpentine, hy- 

 drate of, 537. 



Olbers's method of determining the or- 

 bits of comets, on, 7, 1 23, 203, 280. 



Optical properties of oxalate of chro- 

 mium and potash, 436. 



Orang Outang, frequent deficiency of 

 the ungueal phalanx in the, 72. 



Organ, enharmonic, 366. 



Organic remains, 81, 1 74, 182, 221, 278, 

 374. 



Ovaries in thehuman species, on the, 209. 



Owen (R.), dissection of a Dasyurus, 

 154 ; anatomy of the Pelican, 154. 



Oxacids, their action on pyroxylic spirit, 

 538. 



Oxy chloride of antimony, 332. 



Palo de Vaca, pericarp and nuts of, 501. 



Paper, made from turf, 401. 



Peafowl, habits of the, 228. 



Pelican, anatomy of the, 154, 223. 



Penguin, anatomical description of the, 

 519. 



Pentacrinus Europceus, 495. 



Persian Gulf, on the advance of the 

 land in, 41, 192, 250. 



Phillips (Prof.) on a newly discovered 

 tertiary deposit in Yorkshire, 486. 



Philology, importance of the languages 

 spoken by uncivilized nations, 27, 94. 



Phosphorus, arsenic in, 331. 



Phosphuret of azote, 158. 



Plants, divergence the cause of motion 

 in, 357. 



Plenakite, new locality of, 239 ; analy- 

 sis of, 540. 



PoggendorfF (M .) on certain discoveries 

 by Prof. Faraday, 421. 



Polarization of heat, on, 349. 



Potash and oxalate of chromium, optical 



properties of, 436. 

 Powell (Prof.) on prismatic dispersion, 

 293 ; on recent discoveries relative to 

 radiant heat, 296. 

 Prestwich (J.) on the ichtbyolites of 

 Gamrie, 325. 



Pyromucic acid, manufacture of, 395 ; 

 composition of, 429. 



Pyroxylic spirit, discovered by Mr. Phi- 

 lip Taylor in 1812, 395, 427; on a 

 fluid obtained in manufacturing it, 

 395 ; action of oxacids on, 538. 



Quails of India, 229. 



Radiata, fossil, 517. 



Radiation of heat, on, 296, 297. 



Rathlin, zoology of, 492. 



Reid (Mr.), anatomical description of 

 the Patagonian Penguin, 519. 



Reptile, gigantic, new, 327. 



Respiration, theory of, 141. 



Respiration of diving animals, 502. 



Respiratory organs, influence of the, 212. 



Reviews : — Royle's ' Illustrations of the 

 Botany, &c. of the Himalayan Moun- 

 tains,' 132; Sturm ■ On the Solution 

 of Numerical Equations,' 384. 



Rhodizite, a new mineral, 431. 



Roads, parallel, on the theory of, 433. 



Rocks, Silurian system of, 46 ; various 

 kinds of, 222 ; structure of, 320, 376, 

 445. 



Rose (C. B.) on the geology of West 

 Norfolk, 171, 274, 370. 



Rose (Heinric) on the evolution of light 

 during crystallization, 534. 



Rosenberger's (Prof.) Ephemeris of Hal- 

 ley's comet, 423. 



Ross (Sir J.) on the aurora borealis, 304. 



Royal Institution, 70. 



Royal Society, 136, 207, 411. 



Royle (J. F.). review of his ' Illustra- 

 tions of the Botany, &c. of the Hima- 

 layan Mountains, 132. 



Rumker's (C.) new method of reducing 

 lunar observations, 251. 



Russell (J. S.) on the motion of floating 

 bodies, 302. 



Safety-lamps, on the wire gauze of, 411. 



Salts of sulpho-methylic acid, 397. 



Scanlan (M.) on a fluid obtained in ma- 

 nufacturing pyroxylic spirit, 395. 



Schiede (Dr.) on the Oxalis tuber -osa, 

 Solanum tuberosum, Cevadilla, Amole, 

 &c, 500. 



Sedgwick (Prof.) on the structure of 

 mineral masses, and the aggregation 

 of stratified rocks, 320 ; on the Silu- 

 rian and Cambrian systems, 483. 



Shells, 153, 226, 227,318, 326; diffi- 

 culty of distinguishing certain genera 

 of, 210; on a bed of at Elie in Fife- 

 shire, 318. 



Silurian system of rocks, on the, 46, 483. 



Silver, on the assay of, 425. 



Smith (J. D.) on the composition of 

 iodide of iron, 156. 



