546 



INDEX. 



Consonances of the form h : 1, on the 

 beats of. 420, 492. 



Cook (E. II.) on a convenient term 

 expressing the change of radiant 

 heat and light into sound, 377 ; on 

 the existence of the luminiferous 

 aether, 477. 



Cooper (W. J.) on some new appa- 

 ratus for use in gas-analysis, 534. 



Craig (T.) on steady motion in an 

 incompressible viscous fluid, 304. 



Cross (C. 11.) on an acoustic pheno- 

 menon noticed in a Crookes's tube, 

 396. 



Crova (A.) on spectrophotometers, 

 155. 



Crystals, on the electric absorption 

 of, 414. 



Curie (P.) on the liberation of the 

 electricity in tourmaline bv pres- 

 sure, 224. 



Darwin (Lieut. L.) on the rate of the 

 decrease of the light given off by a 

 phosphorescent surface, 209. 



Diffraction-gratings, on copying, 196. 



Discharge, on alternating, in vacuo, 

 121. 



Dollen (M. von) on the correction of 

 latitudes for local attraction, 314. 



Domalip (Dr. K.) on alternating dis- 

 charge in vacuo, 121. 



Draper (Prof. J. W.) on the phospho- 

 rograph of a solar spectrum, and 

 on the lines in its infra-red region, 

 157. 



Ebonite, on the transmission of radia- 

 tion of low refrangibility through, 

 466. 



Electric absorption of crystals, on 

 the, 414. 



currents, on the law of force 



between, 451. 



effects produced by the motion 



of electrified bodies, on the, 229. 



measurements, on the choice of 



the unit of force in absolute, 226. 



Electrical capacities of two conden- 

 sers, on a method of comparing 

 the, 370. 



condensers, on the internal dis- 

 charges of, 541. 



conductivities, on the measuring 



of, 81. 



Electricity, on contact, 43; on the 

 liberation of the, in tourmaline, by 

 pressure, 224 ; on the principle of 

 the conservation of. 474. 



Electrolysis, on thermal, 508. 



Electrolytic action, on an electro- 

 chemical method of investigating 

 the field of, 446. 



Electromagnetic action, on the mole- 

 cular vortex theory of, 397. 



unit, on the number of electro- 

 static units in the, 473. 



Electromotive force, on the measure- 

 ment of the, of the pile, 153; on the 

 determination of chemical affinity 

 in terms of, 169, 261, 348. 



Electrostriction, on the theory of, 75. 



Elements, on a relation between the 

 melting-points of the, and their 

 solid binary compounds and the 

 heats of formation of the latter, 

 28. 



Energy, on the conservation of, 529. 



Festing (Col.) on the transmission of 

 radiation of low refrangibility 

 through ebonite, 466. 



Fitzgerald (G. F.) on certain dimen- 

 sional properties of matter in the 

 gaseous state, 103. 



Fluid, on the motion of an incom- 

 pressible viscous, in the vicinity of 

 a sphere, 153, 304. 



Galvanic conductivity of heated gases, 

 on the, 395. 



Galvanometer, on a new form of, 476. 



Gas, on tones produced by the inter- 

 mittent radiation of a, 308. 



Gas-analysis, on some new apparatus 

 for use in, 534. 



Gas-solutions, on the coefficient of 

 expansion of, 113. 



Gases, on the absorptionof dark heat- 

 rays by, 1 ; on the galvanic con- 

 ductivity of heated, 395. 



Geological Society, proceedings of 

 the, 72, 151, 538. 



Gladstone (Dr. J. H.) on specific re- 

 fraction and dispersion of isomeric 

 bodies, 54 : on thermal electrolysis, 

 508. 



Glan (Dr. P.) on a spectrum-tele- 

 scope, 110. 



Glazebrook (R. T.) on the measure- 

 ment of small resistances, 291; on 

 a method of comparing the elec- 

 trical capacities of two condensers, 

 370; on the molecular vortex 

 theory of electromagnetic action, 

 397. 

 Gravitation, on the mechanical theory 

 of, 391. 



