INDEX. 



589 



Ephesite, on the coini)Ositiou of, 

 160. 



Faraday (M.) ou the possil)le relation 

 of gravity to electi-icity, ()8 ; on tlie 

 magnetic anil diamagnetie condition 

 of bodies, 69 ; on magnetic con- 

 ducting power and atmospheric 

 magnetism, 71, 7-1. 



Feilitzsch (Dr. von) ou the physical 

 distinction of magnetic and diamag- 

 netie bodies, 46. 



Ferri-mangani-tungstic acid, 77- 



Fizeau (M. H.) ou the velocity of 

 light, 544. 



Fluids, on the motion of, 1, 105. 



Fordos (M.) on the sulphuret of nitro- 

 gen, 346 ; on sulphur insoluble in 

 sulphuret of carbon, 435. 



Foucault (M. L.) on the velocity of 

 light, 544 ; on the rotation of the 

 earth, 575. 



Frog, on the development of the 

 mouth and tongue of the, 38. 



Gadohnite, occurrence of, in Ireland, 

 350. 



Gelis (M.) on the sulphuret of nitro- 

 gen, 346 ; on sulphur insoluble in 

 sulphuret of carbon, 435. 



Geographical Society of France, pro- 

 ceedings of the, 169. 



Geometry and geometers, on, 536. 



Glaisher (J.) ou the meteorology of 

 England and the South of Scotland 

 dming the quarter ending Decem- 

 ber 31, 1850, 141 ; on an extraor- 

 dinarj' fall of rain in the neighbom-- 

 bood of London, 506. 



Gold, analysis of two samples of South 

 Australian, 261. 



Gossleth (M.) on caproic and oenan- 

 tliylic acids, 173. 



Gravity, on the possible relation of, 

 to electricity, 68. 



Grenon (M.) on a method of gilding 

 porcelain, 518. 



Guinon (M.) on nitrous acid and so- 

 lution of nitro-sulphuric acid, 432. 



Gurolite, description and analysis of, 

 111. 



Gutta percha, on polarization by, 262. 



Gyreidometer, on the, 550. 



Ilaughton (Rtv. S.) on Prof. Potter's 

 theory of sound, 332, 560. 



Heat, effect of the radiation of, on the 

 propagation of sound, 30.5 ; on the 

 rotary jjovver which the essence of 



turpentine and saccharine solutions 

 exercise on, 466. 



Henry (T. II.) on the white blende of 

 New Jersey, U.S., 23. 



Hind (J. R.j on the discoveiy of a 

 new planet, 682. 



Hofmann (Dr.) on the molecular con- 

 stitution of the organic bases, 568. 



Hunt (T. S.) on some Canadian mi- 

 nerals, 322. 



Huxley (T.) on the anatomy and phy- 

 siology of Salpa and Pyi-osoma, 504 ; 

 on Appendicularia and Doliolum, 

 568. 



Hydrodynamics, on the principles of, 

 "26, 157, 205, 231, 3.93, 477. 



Integral calculus, on several points of 

 the, 565. 



Iron, chemical equivalent of, 76 ; re- 

 marks on a mass of meteoric, 517. 



Iron bars, on the magnetization of, by 

 the galvanic current, 198. 



Jones (H. B.) on the oxidation of am- 

 monia in the human body, 420. 



Labradorite, analysis of, 325. 



Laming (R.) on the quantitative esti- 

 mation of manganese, 517. 



Laplace's theory of sound, observa- 

 tions on, 225. 



Lam-ent (A.) on the ferric and ferri- 

 mangani-tungstic acids, 77 ; on 

 dulcose, 78. 



Lewy (M.) on the chemical composi- 

 tion of the air, 7b. 



Light, on the absolute quantity of, 

 emitted by phosphori, 93 ; on the 

 polarization of, reflected by glass, 

 335 ; on the chemical action of, 

 368 ; on the connexion of chemical 

 forces with the polarization of, 428 ; 

 on the vibrations of plane-jiolarized, 

 441 ; ou the velocity of, 544, 570. 



Lines and surfaces of the second order, 

 on the contacts of, 11.9. 



Madder, on the colouring matters of, 

 425. 



Magnesium, ou the equivalent of, 170. 



Magnetic and diamagnetie bodies, ou 

 the physical distinction of, 46, 69. 



Magnetic disturbances, on the perio- 

 tlical laws of, 498. 



induction, on tiie theory of, in 



crystalline and nou-crystalliue sub- 

 stances, 177- 



survey of the Eastern Archi|)e- 



lago, 3.19. 



