INDEX. 



557 



of some cyanogen compounds of, 

 238. 



Cockle (J.) on quintics, 223. 



Copper, on the conducting-power of, 

 for heat, 161. 



Crookes (W.) on the discovery of the 

 metal thallium, 55 ; on the pro- 

 perties of thallium, 317. 



Cyclones, on the theory of, 225. 



Dale (Rev. T. P.) on the refraction, 

 dispersion, and sensitiveness of li- 

 quids, 484. 



De la Rive (L.) on the electrical con- 

 ductivity of thallium, 236. 



Deville (H. St. -Claire) on the mea- 

 surement of high temperatures, 336. 



Diffusiometer, description of the, 410. 



Drach (S. M.) on some new algebraic 

 symbols, 406; on Albert Durer's 

 heptagon-chord, 408. 



Earth, on the rotation of the, 63 ; on 

 the climate of the, in palaeozoic 

 times, 323 ; on the nearly spheri- 

 cal arrangement of the mass of the, 

 342. 



Electric induction, note on, 1 60. 



Electrical intensity and tension, on 

 the correct interpretation of the 

 terms, 504. 



Energy, on the conservation of, 144, 

 326. 



Equations, on differential, 373, 441. 



Eye, on the focal adjustment of the, 

 295 ; on some phenomena pro- 

 duced by the refractive power of 

 the, 324. 



Fluids, on the true theory of pressure 

 as applied to elastic, 70. 



Foucault (M.) on the velocity of light, 

 528. 



Frank (Mr.) on the direct determina- 

 tion of oxygen in organic bodies, 

 554. 



Galton (F.) on the theory of cyclones, 

 225. 



Galvanic battery, on the dynamics of 

 the, 452. 



Gas-furnace, description of a new, 15. 



Gases, on the radiation and absorp- 

 tion of, 219 ; on the absorption of, 

 by charcoal, 311 ; on the molecular 

 mobility of, 409. 

 Geological Society, proceedings of 

 the, 155, 321, 548. 



| Gill (J.) on the dynamical theory of 

 heat, 109. 



Gladstone (Dr. J. H.) on the refrac- 

 tion, dispersion, and sensitiveness 

 of liquids, 484. 



Gore (G.) on a new gas-furnace, 15 ; 

 on the adhesion of liquids to mer- 

 cury, 142. 



Graham (T.) on the molecular mobility 

 of gases, 409. 



Gravity, on an apparatus for the sta- 

 tical measure of, 158. 



Gun-cotton, on the products of com- 

 bustion of, 266. 



Gunpowder, on the products of com- 

 bustion of, 266 ; on the destructive 

 energy of, 329. 



Guns, on the forces of translation and 

 rotation in rifled, 195. 



Hail, on the artificial production of, 

 184. 



Hailstones, on some remarkable, 67. 



Harris (Sir W. S.) on the correct in- 

 terpretation of the electrical terms 

 intensity and tension, 504. 



Haughton (Rev. S.) on the tides of 

 the arctic seas, 149. 



Hautefeuille (M.) on the artificial pre- 

 paration of ru tile and Brookite, 537. 



Heat, on the dynamical theory of, 65, 

 109, 144, 145 ; on the conducting- 

 power of iron and copper for, 161 ; 

 on chemical and voltaic, 522. 



, radiant, on the relation of, to 



aqueous vapour, 30. 



Hofmann (Dr.) on the blue deriva- 

 tives of the tertiary monamines, 

 230. 



Huggins (W.) on the lines in the 

 spectra of some of the fixed stars, 

 319. 



Hunt (T. S.) on the earth's climate 

 in palaeozoic times, 323. 



Hygrometer, on a thermo-electrical, 

 435. 



Hypochlorous acid, on the action of, 

 upon organic bodies, 539. 



Indium, reactions of the new metal, 

 488. 



Iron, on the conducting-power of, for 

 heat, 161 ; on the magnetical de- 

 portment of some cyanogen com- 

 pounds of, 238 ; on the change of 

 form assumed by wrought, when 

 heated and then immersed in water, 

 391 ; on the influence of tempera- 

 ture on the electric conducting- 

 power of, 542. 



