INDEX. 



541 



Crova (M.) on the interference- 

 bauds of grating- spectra on gela- 

 tine, 471. 



Current, on the magnetic field of a 

 circular, 354. 



D' Arson val galvanometer, on high 

 resistances used in connexion with 

 the, 210. 



Dielectric, on the attraction of two 

 plates separated by a, 78. 



Dielectrics, on an electrolytic theory 

 of, 76. 



Diffusion of substances in solution, 

 ou the, 127. 



Dispersion, on some recent determi- 

 nations of molecular, 204. 



Dynic equivalent of a substance, 

 definition of the, 267. 



Earp (Miss A. G.) on the effect of 

 the replacement of oxygen by 

 sulphur on the boiling- and melt- 

 ing-points of compounds, 458. 



Edgeworth (Prof. F. Y.) on a new 

 method of treating correlated 

 averages, 63. 



Electric discharge, on the separation 

 and striation of rarefied gases by 

 the, 200 ; on the intensity of radi- 

 ation by rarefied gases under the 

 influence of, 502. 



discharges, experiments with 



high frequency, 142; on trie 

 action of light upon, 151. 



~ — fields, constant and varying, 

 experiments in, 68. 



Electrical discharge, on the potential 

 of, 538. 



flow, on the differential equa- 

 tion of, 419. 



furnace, on a new, 313. 



properties of pure nitrogen, on 



the, 1. 



vibrations, on the disengage- 

 ment of heat occurring when, are 

 transmitted through wires, 537. 



Electrochemical effects due to mag- 

 netization, on, 473. 



Electromotive force, on the relation 

 of volta, to pressure, &c, 97. 



Emmons (H.) on the petrography of 

 the island of Capraja, 312. 



Energy, on radiant, 113 ; on contact 

 action and the conservation of, 

 134 ; on the distribution of kinetic, 

 among Kelvin's doublets, 160; on 



source of the, required 

 for the life of bacilli, 389. 



Equations of motion of a perforated 

 solid in liquid, on the, 338, 490. 



Equipotential lines in plates tra- 

 versed by currents, on a visible 

 representation of the, 151. 



Everett (Prof. J. D.) on a new and 

 handy focometer, 333. 



Fluorite, on the refraction of rays of 

 great wave-length in, 44. 



Focometer, on a new, 333. 



Foote (A. E.) on a meteoric stone 

 seen to fall in South Dakota, 152. 



Force, on the laws of molecular, 

 211. 



Fox (H.) on some coast-sections at 

 the Lizard, 466 ; on a radiolarian 

 chert from Mullion Island, 466. 



Frederick (Lieut. G. C.) on the 

 geology of certain islands in the 

 New Hebrides, 467. 



Friction, on liquid, 441. 



Furnace, on a new electrical, 313. 



Fusion constants of igneous rock, on 

 the, 173,296. 



Galitzine (B.) on radiant energy, 113. 



Galvanometer, on high resistances 

 used in connexion with the 

 D'Arsonval, 210. 



Gases, on the separation and stria- 

 tion of rarefied, by the electric dis- 

 charge, 200; on the intensity of 

 radiation by rarefied, under the 

 influence of electric discharge, 

 502. 



Geissler's tubes, on a property of the 

 anodes of, 538. 



Gelatine, on the interference-bands 

 of grating-spectra on, 471. 



Geological Society, proceedings of 

 the, 74, 146, 312, 464. 



Glacial Diift, on the occurrence of 

 boulders and pebbles from the, in 

 gravels south of the Thames, 468. 



Gladstone (Dr. J. H.) on some 

 recent determinations of molecular 

 refraction and dispersion, 204. 



Gold -deposits, on the Pambula, 76 ; 

 of Pahang, on the, 75. 



Goldstein (E.) on a property of the 

 anodes of Geissler's tubes, 538. 



Gore (Dr. G.) on the relation of 

 volta electromotive force to pres- 

 sure &c, 97. 



