550 



INDEX. 



Oxides, metallic, and alioxanic acid, 233; 

 and oxaluric acid, 235. 



Oxus, on the discovery of the »ource of 

 the, 52. 



P. on the chlorochromic acid of Dr. 

 Thompson, 230. 



Palaeontology: — on Cheirotherium, 150 ; 

 on the occurrence of Graptolites, 307; 

 on Thylacotherium Prevostii, 141, 456; 

 on Basilosaurus, 302, 457 ; on Phas- 

 colotherium, 457 ; on the Cha;ropota- 

 mus, 459 ; on the marsupial nature of 

 the Stonesfield bones, 460 ; on fossil 

 Infusoria, 460 ; on fossil fish in the 

 Bagshot Sand, 460 ; on Orthoceratites, 

 461 ; on Spirolonites, 461 ; on the state 

 in which animal matter is found in fos- 

 sils, 461 ; on the corals of the lime- 

 stone of Devon, 461. 



Pearson (Rev. Dr.) on the obliquity of 

 the ecliptic, 314. 



Penny (F.) on the application of the 

 conversion of chlorates and nitrates 

 into chlorides, and of chlorides into ni- 

 trates, to the detennination of several 

 equivalent numbers, 218. 



Perikline, analysis of crystallized, 397. 



Phascolothcrium, on the remains of, 220. 



Phillips (Prof J.) on the classification 

 of the Devonshire strata, 353. 



Phillips (R.), letter to, on the constitu- 

 tion of resins, 340; on the chemical 

 equivalents of certain bodies, 359; on 

 the preparation of the chloride of car- 

 bon, 473. 



Phosphorus, separation of, from its oxide, 

 544. 



Photogenic drawing, an account of the 

 art of, 196; improvements in, 363, 

 463 ; application of the light of incan- 

 descent coke to, 475. 



Piles, on the theory of secondary, 446. 



Plants, on the respiration of, 73 ; absorp- 

 tion of azote by, 237 ; influence of na- 

 tive magnesia on the vegetation of,- 

 238 ; formation of alkaline and earthy 

 bodies in, 365; distribution of, in Co- 

 lombia, 102. 



Plateau (Prof. J.) on a general theory 

 of the visual appearances arising from 

 the contemplation of coloured objects, 

 330, 439. 



Platina, action of spongy, 157. 



electrodes, on the polarized condi- 

 tion of, 446. 



Platinum, on voltaic series and combi- 

 nation of gases by, 127. 



. , bichloride of, action of acetone on, 



84. 

 Pleiades, on the passage of the moon 



across the, 177. 

 Pneumatic lc!cgragli,on a new, 2^6,317. 



Polarization, voltaic, of certain solid and 

 fluid substances, 43. 



elliptical, produced by quartz, 169, 



321. 



Potatoes, composition of the oil of, 1 56. 



Powell (Rev. B. ) observations on some 

 points in the theory of the dispersion 

 of light, 261. 



Prater (H.) on the anti-inflammable and 

 anti-dry-rot powers of the subcarbon- 

 ate of soda and other salts, 432. 



Prinsep (G. A.) on a remarkable heat 

 observed in masses of brine kept for 

 some time in large reservoirs, 27. 



Quartz, on the elliptical polarization pro- 

 duced by, 169, 321. 



Queckett (E. J.) on the anatomical and 

 physiological nature of ergot in cer- 

 tain grasses, 461. 



Quetelet (M.), an account of Prof. G. 

 Moll, 288; on terrestrial magnetism, 

 478. 



Quina, on the non-existence of the car- 

 bonates of, 392. 



Rain, impressions and casts of, in the 

 quarries of Cheshire, 507. 



Regnault (M. V.) on micas containing 

 lithia and potash, 393 ; on the prepa- 

 ration of the dichloride of carbon, 473. 



Resin, Highgate, on the comoosition of, 

 87. 



Resins, on the constitution of the, 340, 

 492. 



, mineral, on the origin of, 91. 



Respiration, experiments on the products 

 of, 401. 



Retina, on the duration of impressions 

 on the, 330. 



Reviews : — Lubbock's Treatise on the 

 Tides, 464 ; Wallace's Geometrical 

 Theorems and Analytical Formul«, 

 467 ; Faraday's Experimental Re- 

 searches in Electricity, 468 ; Scientific 

 Memoirs, Part V., 472. 



Richardson (T.) on the decomposition of 

 amj'gdalin by emulsin, 414. 



Rigaud (Prof.), notice of the late, 293. 



Rigg (R.) on the formation of alkaline 

 and earthy bodies in plants, 365. 



Rocks, classification of the older strati- 

 fied, of Devonshire and Cornwall, 

 241, 317, 353, 354—359 ; remarks on 

 Murchison's Silurian, and Sedgwick's 

 Cambrian, systems of, 450. 



Rose (Prof. H.) on the separation of 

 copi)er from arsenic, 78 ; on a method 

 of distinguishing strontian from lime, 

 78 ; on the preparation of selenic acid, 

 396. 



Sabine (Major), comparison of the mag- 

 netic lines of no dip and of least in- 

 tensity, 8J. 



