II^DEX. 



529 



Diamagnetism and the concentration 

 of energy, on, 403. 



Dunlop (Dr. A.) on the Jersey brick- 

 clay, 278. 



Earth, on periodic moTements of the 

 surface of the, 189. 



Elasticity of metals, on the alteration 

 of the constant of, by the electrical 

 current, 207. 



Electric force, on rays of, 289. 



potential, on the propagation 



of, 47. 



spark, on some experiments 



with the, 285. 



Electrical current, on the alteration 



of the constant of elasticity of 



metals by the, 207. 

 measuriug-instrument, on 



a continuous heat and, 28. 

 resistance, design for a standard 



of, 24. 

 Electricity, on the excitation of, by 



the contact of rarefied gases with 



galvanic incandescent wires, 78; 



on the passage of, through bad 



conductors, 526. 

 Electrification through a dielectric, 



on the motion of, 324. 

 Electrochemical actinometer, on an, 



288. 

 Electrodes, on mercury-dropping, 



365, 384. 

 Electrolysis, on, 366. 

 Electrolytes, on the loss of voltaic 



energy of, by chemical union, 353. 

 Electrolytic behaviour of mica at 



high temperatures, on the, 368. 

 Electromagnetic capacity, on a modi- 

 fication of the ordinary method of 



determining, 69. 



effects of convection-currents, 



on, 44o. 



equations, on the general solu- 

 tion of Maxwell's, 29. 



units, on the dimensions of, 323. 



Electrometer with a quartz double 

 plate, on an, 207. 



Electromotive forces from thermo- 

 chemical data, on the divergence 

 of, 209. 



Electrostatic field produced by vary- 

 ing magnetic induction, on an, 469. 



Elster (J.) on the excitation of elec- 

 tricity by the contact of rarefied 

 gases with galvanic incandescent 

 wires, 78. 



Energy and vision, on, 1. 



and work, on the definition of 



the terms, 115. 

 , on the history of the doctrine 



of radiant, 285. 

 , on diamagnetism and the con- 

 centration of, 403. 

 Eozoon canadense, remarks on the, 



363. 

 Eye, on the sensitiveness of the, for 



various colours, 21. 

 Felstones, on some nodular, 362. 

 Fitzgerald (Prof. G. F.) on the di- 

 mensions of electromagnetic units, 



323. 

 Flame, on the sensitive, as a means 



of research, 435. 

 Fleming (Prof. J. A.) on a design for 



a standard of electrical resistance, 



24. 

 Fromme (Dr. C.) on irreciprocal con- 

 duction, 282. 

 Fulgurites from Monte Viso, on, 205. 

 Gases, on the excitation of electricity 



by the contact of rarefied, with 



galvanic incandescent wires, 78 ; 



on the law of solubility of, 439 ; on 



the isotherms of, 527. 

 Geitel (H.) on the excitation of elec- 

 tricity by the contact of rarefied 



gases with galvanic incandescent 



wires, 78. 

 Geological chronology, an attempt at 



a, 405, 487. 

 Society, proceedings of the, 74, 



203, 278, 359, 429. 

 Gibbs (Prof J. W.) on the electric 



theory of light and the theory of a 



quasi-labile aether, 238. 

 Glacial periods, on the evidence of 



former, 281. 

 Gore (Dr. G.) on the loss of voltaic 



energy of electrolytes by chemical 



union, 353. 

 Gouy (M.) on an electrochemical 



actinometer, 288. 

 Granite, on the efiects of contraction 



during the cooling of intrusive 



masses of, 233. 

 Gratiug, on the concave, in theorj'- 



and practice, 369. 

 Grimaldi (Dr. G. P.) on a voltaic 



current obtained with bismuth in 



a magnetic field, 440. 

 Groom (T. T.) on the occurrence of 



a new form of tachylyte, 205. 



