572 



INDEX. 



double salts of the magnesian group, 

 235, 289 ; preparation of hypophos- 

 phites, 236 ; boracic aether, 337 ; ac- 

 tion of boracic acid on pyroxylic spirit, 

 339 ; on the wax of Chamcerops, 350 ; 

 on pegmine and pyropine, 368 ; de- 

 scription of a new mercurial trough, 

 406; new compounds of perchloride 

 of tin, 416 ; analysis of two species of 

 epiphytes, 420 ; resin of Ceradia /ar- 

 eata, 422 ; on the constitution of^ the 

 internal gas of plants, 426 ; relation of 

 ozone to hyponitrie acid, 432 ; compo- 

 sition of the fire-damp of the Newcastle 

 coal-mines, 437 ; resin of Xanthorcea 

 hastilis, 440 ; on atomic volume and 

 specific gravity, 527 ; preparation of 

 alloxan, 550 ; preparation of chloro- 

 azotic acid, 555 ; on certain impurities 

 in commercial sulphate of copper, 565 ; 

 on a new eudiometric process, 566 ; on 

 the equivalent of chlorine, ib. ; decom- 

 position of hippuric acid into benzoic 

 acid and sugar of gelatine, 567. 



China, on the anthracite and bituminous 

 coal-fields of, 204. 



Chlorine, on the equivalent of, 566. 



Chloro-acetic acid, preparation of, 154. 



Chloroazotic acid, on the preparation of, 

 555. 



Christie (J. R.) on the use of the baro- 

 metric thermometer for the determina- 

 tion of heights, 220. 



Circulation of the blood, on the cause of 

 the, 190. 



Coal-fields of China, observations on the, 

 204. 



Cobalt ore, analvsis of a, from Western 

 India, 352. 



Cockle (J.) on a proposition relating to 

 the theory of equations, 132 ; on the 

 finite solution of equations of the fifth, 

 sixth and higher degrees, 191, 395. 



Cohesion of liquids, observations on the, 

 293. 



Collen (H.) on the application of the pho- 

 tographic camera to meteorological re- 

 gistration, 73. 



Comet, on a direct method of determi- 

 ning the distance of a, 226 ; Biela's 

 comet, 238. 



Connell (Prof.) on the composition of the 

 Elie pyrope or garnet, 152. 



Crystalline particles, on certain molecular 

 actions of, 1, 94. 



Cyanogen, on the decomposition and ana- 

 lysis of the compounds of, 222. 



Daguerreotype process, on the cause of the 

 fixation of mercurial vapours in the, 

 94. 



Damour (M. A.) on the composition of 



diaspore from Siberia, 336; on the 

 composition of oriental jade and tre- 

 molite, 568. 



Dana (J. D.) on the origin of the consti- 

 tuent and adventitious minerals of trap 

 and the allied rocks, 49. 



Daniell (J. F.), notice of the late, 409. 



Delesse (M. A.) on the composition of 

 native phosphate of alumina, 68 ; ana- 

 lysis of a substance occurring with 

 disthene, 150; on a double hydrated 

 silicate of magnesia, 152. 



Dell (T.) on the transit of Mercury, 224. 



De Morgan (A.) on the invention efflux- 

 ions, 222; on the derivation of the 

 word theodolite, 287 ; on the first intro- 

 duction of the words tangent and se- 

 cant, 382. 



Dessaignes (M.) on the decomposition of 

 hippuric acid into benzoic acid and 

 sugar of gelatine, 567. 



Diamagnetic bodies, action of magnets 

 on, 403. 



Diaspore, analysis of, 336. 



Differentiation as applied to periodic se- 

 ries, observations on, 213. 



Donny (M. F.) on the cohesion of liquids, 

 293. 



Draper (Dr. J. W.) on the circulation of 

 the blood, 178. 



Dysluite, on the identity of, with auto- 

 malite, 561. 



Earth, on the connexion between the ro- 

 tation of the, and the geological changes 

 of its surface, 106. 



Earthquakes, on the vorticose movement, 

 assumed to accompany, 537. 



Ebelmen (M.) on boracic aether, 337 ; 

 on the action of boracic acid on pyr- 

 oxylic spirit, 339. 



Eggs, on the composition of the yolk of, 

 158. 



Electric currents, on the production of 

 musical sounds in metals by, 544. 



Electricity, experimental researches in, 

 64, 147, 294, 324, 455. 



Electro-magnetism, experiments on the 

 mechanical powers of, 448. 



England, on the cause of remarkably mild 

 winters which occasionally occur in, 

 317. 



Epidermis, on the development and 

 growth of the, 82. 



Epiphytes, analysis of two species of, 

 420. 



Equations, on a proposition relating to the 

 theory of, 132 ; of the fifth, sixth and 

 higher degrees, on the existence of 

 finite algebraic solutions of, 190, 395. 



Eudiometric process, description of a 

 new, 566. 



