INDEX. 



557 



Charcoal, on the absorption of gases 



by, 116. 

 Chemical actions, on the mechanical 



energy of, 269. 



nomenclature, observations on, 



262, 464. 



notices from foreign journals, 



305, 374, 528. 



Chromium-compounds, on the con- 

 stitution of, 313. 



Circle, on rational approximations to 

 the, 421. 



Claus (M.) on the synthesis of cro- 

 tonic acid, 309. 



Climate, on change of, due to excen- 

 tricity of the earth's orbit, 538. 



Cotterill (J. H.) on an extension of 

 the dynamical theory of least action, 

 299, 430 ; on the equilibrium of 

 arched ribs of uniform section, 380. 



Crotonic acid, on the synthesis of, 30.9. 



Danaite, analysis of, 7 . 



Davy (Sir H.) on certain statements 

 respecting the late, 77, 164, 246. 



De la Rive (A.) on the propagation 

 of electricity through metallic va- 

 pours, 553. 



De la Rue (W.) on the nature of 

 solar spots, 237, 390. 



Deleuii (M.) on a new air-pump, 487. 



De Luynes (M.) on butylene, 307. 



Diallyle, researches on, 31 1. 



Dynamical principle of least action, 

 on an extension of the, 299, 380, 

 430. 



Edmonds (T. R.) on the elastic force 

 of steam of maximum density, 169. 



Electric light, on the application of 

 the, for lighting under water, 555. 



Electrical experiments and induc- 

 tions, on some, 81, 192, 370. 



force, on the laws and opera- 

 tion of, 65. 



machine constructed of sulphur, 



on an, 551. 



■ measurements, on the elemen- 

 tary relations between, 436, 507- 



signals, on the retardation of, 



on land lines, 409. 



standard of resistance, on the, 



248, 361, 477. 



Electricity, on the propagation of, 

 through metallic vapours, 553. 



Electromagnetic field, on a dynamical 

 theory of the, 1 52. 



Energy, on the history of, 55, 215 ; 



on the mechanical, of chemical 

 actions, 269. 



Equations, differential, of the first 

 order, on, 121. 



Erithyrite, on the action of hydro- 

 chloric acid on, 307. 



Ethylene-gas, preparation of, 306. 



Evolute, on the theory of the, 344. 



Falconer (Dr. H.) on the fossil con- 

 tents of the caves at Gibraltar, 402 ; 

 on the occurrence of human bones 

 in the ancient deposits of the Nile 



and Gm^e>, 403. 



Favre (A.) on the origin of the alpine 

 lakes and valleys, 206. 



Fernet (E.) on a peculiar phenome- 

 non produced by the induction- 

 spark, 488. 



Feussner (M.) on the absorption of 

 light at different temperatures, 471. 



Fittig (M.) on the synthesis of hy- 

 drocarbons of the benzole series, 

 311; on the pieparation of ally- 

 lene, 536. 



Fluorescence, on the history of nega- 

 tive, 44. 



Forbes (D.) on the mineralogy of 

 South America, 1, 129 ; on phos- 

 phorite from Spain, 340. 



Force, on the conservation of, 205, 

 215. 



Foster (Prof. G. C.) on chemical 

 nomenclature, 262. 



Friedel (M.) on a new method of 

 preparing allvlene, 306 ; on the 

 synthesis of acetone, 5^5. 



Gases, on the absorption of, by char- 

 coal, 116; on the unit-\olume of, 

 188. 



Geological Societv, proceedings of 

 the, 75, 157, 239, 325, 398, 550. 



Geometry, note on Lobatschewsky's 

 imaginary, 231. 



Gervais (P.) on the application of the 

 electric light, for lighting under 

 water, 555. 



Giidlestone (A. G.) on the condition 

 of the molecules of solids, 108. 



Gold, analysis of native, 129. 



Gore (G.) on the properties of lique- 

 fied hydrochloric acid gas, .541. 



Greiss (C. B.) on the production of 

 magnetism by turning, 407. 



Hargreave (Dr. C. J.) on differential 

 equations of the first order, 121. 



Harnitzsky (M.) on the conversion 



