INDEX. 



461 



Chrome aventurine, on the prepara- 

 tion of, 455. 



Claudet (A.) on moving photographic 

 figures, 271. 



Clouds, on the polarization of, 175. 



Cockle (Hon. Chief Justice) on quan- 

 toids, 347. 



Commutants, on a property of, 411. 



Copper, on the general existence of, 

 in the animal kingdom, 384. 



Cotterill (J. H.) on elliptic ribs, 21. 



Davy (Dr. E. W.) on the action of 

 nitric and nitrous acids on the sul- 

 phocyanides, 228. 



Debray (M.) on the chlorides of tung- 

 sten, 255. 



De la Rive (A.) on the optical pro- 

 perties developed in different kinds 

 of glass by the passage of an elec- 

 tric discharge, 160; on ice and 

 glaciers, 404. 



De Morgan (Prof.) on infinity and 

 on the sign of equality, 373. 



Desains (P.) on the emission of lumi- 

 nous radiation at a red heat, 136. 



Deville (Ste. -Claire) on dissociation, 

 252. 



Dissociation, observations on, 252. 



Edmonds (T. R.) on the law of den- 

 sity of saturated steam, 1 . 



Electric conduction, observations on, 

 440. 



Electrical behaviour of solid insula- 

 tors, on the, 181. 



induction machine, on an, 150 , 



425. 



Electrotyping, on some improvements 

 in, 451. 



Ellipsoid, on the projection of the, 50. 



Elliptic ribs, on, 21 . 



Ellis (A. J.) on the corrections for 

 latitude and temperature in baro- 

 metric hypsometry, 144. 



Engelbach (M.) on the occurrence of 

 rubidium in basalt, 254. 



Equality, on the sign of, 373. 



Erbium, on the inversion of the ab- 

 sorption-bands in the spectrum of, 

 320. 



Fittig (M.) on xylole, 357. 



Flames, on the spectra of luminous 

 and non-luminous, 91. 



Fieitmann (M.) on a new method of 

 preparing oxygen, 252. 



Flight (Dr. W.) on the thermo-elec- 

 trie tension of minerals, 337. 



Forbes (D.) on the mineralogy of 

 South America, 139. 



Formic acid, on the synthesis of, 360. 



Foster (Prof. G. C.) on chemical 

 nomenclature, 57- 



Gautier (A.) on a compound of hy- 

 drocyanic and hydriodic acids, 360. 



Geological Society, proceedings of 

 the, 158, 378, 452. 



Geometrical permutation, on a pro- 

 blem of, 370. 



Geometry, on the signification of an 

 elementary formula of, 413. 



Gerland (E.) on the deportment of 

 two salts in solution, 382. 



Glaciers, on the formation of, 393. 



Glass, on the optical properties de- 

 veloped in different kinds of, by 

 the passage of an electric discharge, 



Glinzer (M.) on xylole, 357. 



Gold, analyses of some varieties of 

 native, 142. 



Gore (G.) on chemical reactions ob- 

 tained by employing anhydrous 

 liquids as solvents, 414. 



Gravity, on numerical relations of, 

 and magnetism, 52 ; on the influ- 

 ence of, on magnetic declination, 

 185. 



Griess (P.) on a compound from 

 naphthaline isomeric with alizarine, 

 358. 



Hauer (M. von) on easily fusible 

 alloys, 447. 



Hautefeuille (M.) on the artificial 

 formation of sphene and Perows- 

 kite, 251. 



Heat, on the different properties of, 

 radiated by rough and by bright 

 surfaces, 81 ; on the evolution of, 

 by the rapid rotation of a disk in 

 vacuo, 314; on real specific, 407. 



Hebberling (M.) on the atomic weight 

 ' of thallium, 257. 



Heliotrope, on new forms of, 71, 458. 



Helmholtz (Prof.) on ice and glaciers, 

 393. 



Hemiopsy, observations on, 19. 



Holtz (M.) on an electrical induction 

 machine, 159, 425. 



Hoppe-Seyler (M) on the detection of 

 poisoning by carbonic oxide, 456. 



Humphry (Dr.) on the vertebral 

 theory of the skull, 374. 



Husemann (M.) on the preparation 



