INDEX. 



577 



ments of azimuths on a spheroid, 

 145. 



Claudet (F.) on a new class of ammo- 

 niacal compounds of cobalt, 253. 



Clausius (R.) on the moving force of 

 heat, and the laws regarding the na- 

 ture of heat, 1, 102 ; on the effect of 

 fluid friction, 139 ; on the theoretic 

 connexion of two empirical laws re- 

 lating to the tension and the latent 

 heat of different vapours, 483 ; on 

 the influence of pressure upon the 

 freezing of fluids, 548. 



Cloud, on the specific inductive capa- 

 city of, 236. 



Coal, on the composition of the gases 

 evolved in the production of coke 

 from, 573. 



Coal-tar, on the application of recti- 

 fied oil of, to the preservation of 

 meat and vegetables, 331. 



Cobalt, on a new class of ammoniacal 

 compounds of, 253. 



Cockle (J.) on the solution of certain 

 S5^stems of equations, 289. 



Colours of thick plates, on the, 419. 



Cooke (J. B.) on the measurement of 

 chemical affinity, 85. 



Coombe (Rev. J. A.) on the motion 

 of the apse-line in the pendulum 

 oval, 303. 



Corundum, on the artificial formation 

 of, 161. 



Crystalline bodies, on the deportment 

 of, between the electric poles, 33. 



Crystallization by the dry method, 

 researches on, 248. 



Cymophane, on the artificial produc- 

 tion of, 330. 



Danson (J.) on carmufellic acid, 293. 



Davies (T. S.) on geometry and geo- 

 meters, 444. 



Dawes (Rev. W. R.) on the occulta- 

 tion of a fixed star by Jupiter, 325. 



De Morgan (A.) on the Gregorian 

 Calendar, 146. "^ 



Determinants, on a fundamental 

 theory of, 142. 



Diamagnetisra, researches on, 165. 



Diaspore, on the artificial formation 

 of, 161. 



Dolomite, on the formation of, by the 

 action of magnesium vapours, 504. 



Donkin (W. F.) on certain questions 

 relating to the theory of probabili- 

 ties, 55. 



Donovan (M.) on the preparation of 

 phosphorus, 202. 



Dove (Prof.) on the reversion-prism, 

 27 ; on several prism-stereoscopes, 

 and on a simple mirror-stereoscope, 

 29. 



Dresser (C. L.) on the conducting 

 powers of wires for voltaic electri- 

 city, 198. 



Durocher (M.) on the formation of 

 dolomite by the action of magne- 

 sium vapours, 504. 



Earth, effect of the rotation of the, 

 upon the motion of a pendulum, 

 376 ; upon the flight of a projectile, 

 386. 



Ebelmen (M.) on the artificial pro- 

 duction of crystallized minerals, 

 246 ; on the crystalhzation of cy- 

 mophane, 330 ; on the composition 

 of the gases evolved in the produc- 

 tion of coke from coal, 573. 



Eclipse of the sun on the 28th July, 

 on the total, 81. 



Electricity, on the identity of, with 

 light, heat, and magnetism, 498 ; 

 of flame, account of experiments on 

 the, 542. 



, voltaic, on the conducting 



powers of wires for, 198. 



Electric poles, on the deportment of 

 crystalline bodies between the, 33. 



Electrolysis, on the mechanical theory 

 of, 429. 



Electro-magnetic engine, use of 

 electro-magnets made of iron-wire 

 for the, 307. 



Electro-magnetic forces, observations 

 on, 447. 



Electro-magnetism, on the application 

 of, to geodetical and astronomical 

 purposes, 51 ; investigations in, 310. 



Electro-motive forces, on the mea- 

 surement of, 551. 



Elimination, on extensions of the dia- 

 lytic method of, 221. 



Elliptic analyser, on a new, 420. 



Equations, on the solution of certain 

 systems of, 289 ; on the integration 

 of linear differential, 477. 



Ethnology of the British Colonies 

 and Dependencies, Latham's, re- 

 viewed, 413. 



Faye (M.) on the total eclipse of the 

 28th July, 81. 



Fizeau (H.) on the hypotheses rela- 



