47: 



INDEX. 



Croll (Dr. J.) on Le Sage's theory of 

 gravitation, 45. 



Cronstedite, on a variety of, 52. 



Crookes ( W.) on repulsion resulting 

 from radiation, 68. 



Crookes's layers, on some remarkable 

 instances of, at ordinary atmosphe- 

 ric tension, 457. 



Orystallographic notes, 139. 



Crystals, on a method of measuring 

 the thermal conductivity of, 110. 



Daintree (R.) on certain modes of 

 occurrence of gold in Australia ; 

 394. 



Daniell cell, on a form of, as a stand- 

 ard of electromotive force, 1. 



Earthquake-wave transit, on the rate 

 of, 358. 



Electrical after-currents of trans- 

 versely magnetized iron rods, on 

 the, 160. 



currents, experiment for illus- 

 trating the terrestrial, 475. 



Electricity, on the distribution of, 

 on two spherical surfaces, 54 ; on 

 rain-clouds and atmospheric, 197 ; 

 on glass-engraving by, 238 ; on the 

 theory of motion of, in submarine 

 and underground telegraph-wires, 

 474. 



Electrolysis of chemical compounds, 

 on the, 375, 439. 



Electromagnetic and calorimetric ab- 

 solute measurements, on, 30, 127, 

 189. 



Electromotive force, on a form of 

 Daniell cell convenient as a stan- 

 dard of, 1. 



Emerson-Reynolds (Prof. J.) on a 

 new form of measuring-apparatus 

 for a laboratory spectroscope, 106 ; 

 on the rapid estimation of urea, 

 144. 



Exner (Dr. F.) on the galvanic po- 

 larization of platinum in water, 

 400. 



Feil (M.) on the artificial production 

 of corundum, ruby, and various 

 crystallized silicates, 47. 



Field (F.) on a variety of cronstedite, 

 52. 



Fluids, on the resistance of, 320. 



Fremy (E.) on the artificial produc- 

 tion of corundum, ruby, and various 

 crystallized silicates, 47. 



Gallium, on the extraction of, 318. 



Galvanic currents, on the relation 

 between the current -work and the 



heat-evolution in stationary, 127 

 between solutions of different de- 

 grees of concentration, on, 317, 

 348. 



Gardner (J. S.) on the correlation of 

 the Bournemouth beds, 393. 



Gas, on some remarkable instances of 

 compressed strata of polarized, at 

 ordinary atmospheric tensions, 457, 



Gas-battery, on Grove's, 272. 



Gases, on the composition and indus- 

 trial use of the, from blast-furnaces, 

 75 ; application of the kinetic 

 theory of, to gravitation, on the, 

 117,297. 



Geikie (Dr. J.) on the geology of 

 Gibraltar, 471. 



Geological Society, proceedings of 

 the, 72, 156, 231, 313, 392, 471. 



Glacial deposits of West Cheshire, on 

 the, 72. 



Glass, on engraving on, by electricity, 

 238. 



Godfrey (J. G. H.) on the geology of 

 Japan, 473. 



Gold, on certain modes of occurrence 

 of, 394. 



Govi (G.) on the law of absorption 

 of radiations through bodies, and 

 its employment in spectral analy- 

 sis, 78. 



Gravitation, on Le Sage's theory of, 

 45 ; on the bearing of the kinetic 

 theory of, on the phenomena of 

 cohesion and chemical action, on, 

 297. 



Grove's gas-battery, on, 272. 



Guthrie (F.) on the influence of 

 temperature on the passage of air 

 through capillary tubes, 433. 



Heat, on the mechanical theory of, 

 348. 



Heat-conductivity of stone, on the, 

 241. 



Helmholtz (Prof.) on galvanic cur- 

 rents occasioned by differences of 

 concentration, 348. 



Hicks (H.) on the Dimetian and Pe- 

 bidian rocks of Pembrokeshire and 

 Caernarvonshire, 157, 231. 



Hill (Rev. E.) on the precarbonife- 

 rous rocks of Charnwood Forest, 

 236. 



Hvdrogen, liquefaction of, 158. 



Hughes (Prof. T. M'K.) on the pre- 

 cambrian rocks of Bangor, 232. 



Ice as an electrolyte, on, 43. 



Inosite, crystallography of, 141. 



