550 



INDEX. 



Edmondson (J.) on calculating- 

 machines, 15. 



Electric conductivity of gases, on 

 the, 305. 



currents, on the distribution of, 



in networks of conductors, 221 ; 

 on the generation of, by sulphur- 

 cells, 328. 



Electrical conduction and decompo- 

 sition, on the influence of pressure 

 on, 435. 



conductivity of solid mercury 



and of pure metals at low tempe- 

 ratures, 77. 



elementary particles, on the 



quantity of, 303. 



machine, on the tones produced 



in a plate by frequent discharges 

 of an, 548. 



processes in thunder-clouds, on, 



34. 



resistance of alcohol, on the, 



301. 



Electricity, on an unnoticed danger 

 in certain apparatus for the distri- 

 bution of, 292 ; on atmospheric, 

 456. 



Electrolytic decomposition, on cer- 

 tain cases of,, 37, 438. 



Electromagnets, on, &18. 



Electromotive force, on the use of 

 Dani ell's cell as a standard of, 126 ; 

 on the seat of the, in a voltaic cell, 

 336, 372. 



Electro-optic action of a charged 

 Franklin's plate, on the, 363. 



Elster (J.) on the electrical processes 

 in thunder-clouds, 34. 



Fleischl (E. von) on the deformation 

 of the luminous wave-surface in 

 the magnetic field, 216. 



Fleming (Dr. J. A.) on DanielFs 

 cell as a standard of electromotive 

 force, 126 ; on molecular shadows 

 in incandescence lamps, 141 ; on 

 the distribution of electric currents 

 in networks of conductors, 221. 



Fletcher (Dr. L. B.) on a determi- 

 nation of the B. A. unit in terms 

 of the mechanical equivalent of 

 heat, 1. 



Fluorine, on the refraction of, 481. 



Focus, on the accuracy of, for per- 

 fect definition, 354. 



Fol (H.) on the depth to which day- 

 light penetrates in sea-water, 74. 



Foussereau (Gr.) on the electrical 

 resistance of alcohol, 301. 



Friction, on the determination of the 

 coefficients of internal, 387. 



Functions, on the mechanical inte- 

 gration of the product of two, 1 75. 



Galvanic polarization, on the mole- 

 cular theory of, 422. 



Gases, on the electric conductivity of, 

 305. 



Geitel (H.) on the electrical pro- 

 cesses in thunder-clouds, 34. 



Geological Society, proceedings of 

 the, 73, 205. 



Gladstone (G.) on the refraction of 

 fluorine, 481. 



(Dr. J. H.) on the specific 



refraction and dispersion of light 

 by the alums, 162. 



Glazebrook (E. T.) on a comparison 

 of the B.A. standard resistance- 

 coils with mercury standards, 343. 



Goldflelds of the Transvaal, on the, 

 206. 



Gray (T.) on measurements of the 

 intensity of the horizontal compo- 

 nent of the earth's magnetic field, 

 484. 



Gresley (W. S.) on pebbles of haema- 

 tite from the Permian breccias of 

 Leicestershire, 209. 



Groshans (J. A.) on a new law ana- 

 logous to those of Avogadro and 

 Dulong and Petit, 19, 191. 



Gulf -stream, on the influence of the, 

 on the winters of Great Britain 

 and Ireland, 439. 



Heat, on the determination of the 

 B.A. unit in terms of the mechani- 

 cal equivalent of, 1 ; on the bleach- 

 ing of iodide of starch by means 

 of, 168 ; on the mechanical equi- 

 valent of, 217; on the influence of, 

 on chemical change, 323. 



Hennessey (Prof. H.) on the winters 

 of Great Britain and Ireland as 

 influenced by the Gulf -stream, 

 439 ; on the comparative tempe- 

 ratures of the Northern and 

 Southern Hemispheres, 442. 



Henry (Prof. L.) on the polymeri- 

 zation of the metallic oxides, 81. 



Ilimstedt (Prof. F.) on a determina- 

 tion of the ohm, 417. 



Hood (Dr. J. J.) on the influence of 

 heat on chemical change, 323. 



