INDEX. 



549 



Collodion, on sensitive, 398. 

 Colours, on complementary, 547- 

 Connell (A.) on the new hygrometer 



or dew-point instrument, 143. 

 Cooper (E. J.) on the perihelia and 



nodes of the planets, 472. 

 Crookes (W.) on a more convenient 

 form of applying gallic acid as a 

 developing agent in photography, 

 225. 

 Crystalline lens, on the optical struc- 

 ture of the, 306. 

 Crystals, on the adjustment of, for 

 measurement with the reflective 

 goniometer, 138. 

 Daubree (M.) on the artificial pro- 

 duction of minerals belonging to 

 the family of silicates and alumi- 

 nates, 315. 

 Diatomacese, on the dots upon the 



valves of the, 383. 

 Differential transformation, researches 



on, 391. 

 Dobell (H.) on the applicability of 

 gelatine paper as a medium for 

 colouring light, 155. 

 Du Moncel (T.) on the luminous 

 coat of the induction sparks of 

 Ruhmkorff's apparatus, 546. 

 Earth, experiments to determine the 



mean density of the, 309. 

 Edingtonite, analysis of, 179. 

 Eisenlohr (W.) on the action of the 

 violet and ultra-violet invisible 

 light, 114. 

 Elasticity of solid bodies, on the ma- 

 thematical theory of the, 305. 

 Electric induction, on associated cases 

 in, of current and static effects, 161 ; 

 on the action of non-conducting 

 bodies in, 401. 

 Electricity, on a method of increasing 



certain effects of induced, 1. 

 Electroscope, on a new, 276. 

 Electro-statical capacity of a Leyden 

 phial and of a telegraph wire, on 

 the, 531. 

 Elliptic motion, on a case of disturbed, 



61. 

 Endosmose, experiments relating to, 



544. 

 Euphrosyne, notice of the discovery 



of the new asteroid, 152. 

 Excrements of man and animals, on 

 the immediate principles of the, 6, r >. 

 Faraday (Prof.) on •some points of 



magnetic philosophy, 81 ; on asso- 

 ciated cases, in electric induction, 

 of current and static effects, 161 ; 

 magnetic remarks, 253. 



Fats, on the composition and pro- 

 perties of, 74. 



Felspars of the granite of the Dublin 

 and Wicklow mountains, on the 

 composition of the, 40, 511. 



Felspathic rocks, examination of 

 some, 354. 



Forrester (J. J.) on the vine-disease, 

 and the proposed remedies for its 

 eradication, 67. 



Frankland (Prof. E.) on organo-me- 

 tallic bodies, 539. 



Fusion, on the alteration of volume 

 of some substances by, 477. 



Galbraith (Rev. J. A.) on the com- 

 position of the felspars of the 

 granite of the Dublin and Wicklow 

 mountains, 40. 



Gallic acid as a developing agent in 

 photography, on a more convenient 

 form of applying, 225. 



Galvanic battery, description of a new 

 single fluid, 260. 



circuits in which perchloride of 



iron enters as an element, re- 

 searches on, 139. 



Gases, on the law of absorption of, 

 116, 181. 



Gasteropoda, on the anatomy of pe- 

 lagic, 542. 



Gelatine paper, on the applicability of, 

 as a medium for colouring hght, 



Gladstone (Dr. J. H.) on circumstances 

 modifying the action of chemical 

 affinity, 535. 



Gold and mercury, on a new com- 

 pound of, 458. 



Gold fish of Franklin, remarks on the, 

 227. 



Gore (G.) on a peculiar phaenomenon 

 in the electro-deposition of anti- 

 mony, 73. 



Gosse (P. H.) on the structure, func- 

 tions and homology of the mandu- 

 catory organs in the Class Rotifera, 

 470. 



Greg (R. P.) on British Peetolites, 

 248; on the crystalline form of 

 leucophanc, 510. 



Griffith (Dr. J. XV.) on the dots upon 

 tin- valves of the Diatomseec, 383. 



