532 



r N D E X. 



Chemical affinity among substances in 

 solution, researches on, 372. 



— — compounds, on the influence of 

 pressure upon the formation of, 150. 



Chloro-hydrated sulphuric acid, on 

 the preparation and properties of, 

 367. 



Chrysamraate of potash, on the date 

 of the discovery of the optical pro- 

 perties of, 171. 



Church (A. H.) on the spheroidal state 

 of bodies, 275. 



Clausius (R.) on the heat produced 

 bj' an electric discharge, 297. 



Clocks, notice on bai'ometrical, ther- 

 mometrical, and hygrometrical, 358. 



Cobalt, on the occiu'rence of, in some 

 mineral springs, 149 ; on the sepa- 

 ration of nickel from, 461. 



Cockle (J.) on the method of sym- 

 metric products, 130. 



Cocoa-nut oil, on the changes pro- 

 duced in the blood by the admini- 

 stration of, 521. 



CoiFee leaf of Sumatra, on the, as a 

 substitute for tea or for the coffee- 

 bean, 21. 



CoUins (M.) on the attraction of ellip- 

 soids considered geometrically, 401. 



Collodion plates, method for preser- 

 ving the sensitiveness of, for a con- 

 siderable time, 349. 



Colom-s, on the theory of compound, 

 254. 



Columbite, on the nomenclature of 

 the metals contained in, 461. 



Comet, notice of a, seen off the coast 

 of South Africa, 68. 



Council (Prof. A.) on the voltaic de- 

 composition of water, 426 ; on the 

 nomenclature of the metals con- 

 tained in columbite and tantalite, 

 461. 



Cooling of buildings, on the ceconomy 

 of the, 138. 



Coralline crag, on some tubular cavi- 

 ties in the, at Sudbourn and Ged- 

 grave near Orford, 320. 



Crookes (W.) on a method for pre- 

 servingthesensitivenessof collodion 

 plates for a considerable time, 349. 

 Davy (Dr. E.) on some new and sim- 

 ple methods of detecting manganese 

 in natural and artificial compounds, 

 and of obtaining its combinations 

 for oeconomical or other uses, 221 ; 



on a new and simple method of de- 

 termining the amount of urea in 

 the urinary secretion, 385. 



Davy (M.) on a new electro-magnetic 

 machine, 489. 



Delesse (M.) on the action of alkahes 

 on rocks, 100. 



Deville (M.) on aluminium and its 

 compounds, 230. 



Deville (C. Ste.-Claire) on hthologic 

 studies, 300. 



Dobson (T.) on the storm-tracks of 

 the South Pacific Ocean, 268. 



Donkin (W. F.) on a class of differ- 

 ential equations, including those 

 which occur in dynamical problems, 

 360. 



Edwards (W. B.) on a comet seen off 

 the coast of South Africa, 68. 



Electric discharge, on the heat pro- 

 duced by the, 347, 348. 



induction, researches on, 197- 



residue in the Leyden jar, theorv 



ofthe, 305, 412, 476. 



Electricity, on the mechanical values 

 of distributions of, 192 ; on the ve- 

 locity of, 204 ; on the generation 

 of heat by, 428. 



ofthe blowpipe flame, on the,47. 



■ of plants, on the, 122. 



Electro-magnetic engine, on a new, 

 489. 



Electro-magnetic engraving machine, 

 description of an, 527. 



Electi'o-telegraphwires, on some phse- 

 nomena presented by, 396. 



Ellipsoids, on the attraction of, con- 

 sidered geometrically, 401. 



Elli))tic integrals, on a particular case 

 of, 213. 



Equations, on a class of differential, 

 360 ; on some jioints in the theory 

 of differential, 450. 



Euclid, on the geometry of the first 

 three books of, 442. 



Faraday (Prof.) on electric induction, 

 197 ; on electro-dynamic induction 

 in liquids, 265 ; on some phajno- 

 mena jiresented by subterraneous 

 electro-telegraph wires, 396. 



Fessel's (M.) gyroscope, observations 

 on, 522. 



Fisher (Prof.) on the development of 

 the vertebral system, 447. 



Flame, on the electricitj' of, 47- 

 Forbes (E.) on an indication of depth 



