574 



I N D E X. 



Differential equations, on an appa- 

 ratus for integrating, 487. 



Discharge, on the striated electrical, 

 245 ; on the electrical, through 

 argon and helium, 293. 



Donnan (Dr. F. G.) on the relative 

 rates of effusion of argon, helium, 

 and some other gases, 423. 



Earthquake-sounds, on, 31. 



Echelon spectroscope, on the, 384, 

 503. 



Effusion of gases, on the relative 

 rates of, 423. 



Elasticity of wires, on the, 193. 



Electrical conduction-resistance, in- 

 fluence of proximity of mass upon, 

 558. 



discharge, on the striated, 245 ; 



on the variation of the electric 

 intensity and conductivity along 

 the, in rarefied gases, 505. 



field, on the distribution of a 



gas in an, 5*29. 



Electricity, on contact, 70, 351, 454 ; 

 on the discharge of, through argon 

 and helium, 293. 



Electrolytic conduction in gases, on, 

 307, 404. 



solution pressure, on the theory 



of, 417. 

 lectrorm 

 the, 2287 



Electron view of voltaic action, on 

 the, 465. 



Elles (Miss G. E.) on the zonal 

 classification of the Wenlock shales 

 of the Welsh borderland, 320. 



Farr (C. C ), corrections to Prof. 

 Perry's table of zonal spherical 

 harmonics, 572. 



Gait (Dr. A.) on the heat of com- 

 bination of metals in the formation 

 of alloys, 405. 



Galvanometer - needles, on the 

 damping of, 559. 



Gas, on the discharge of electricity 

 through a rarefied, 245 ; on the 

 distribution of a, in an electrical 

 field, 529. 



Gat-es, on electrolytic conduction in, 

 307, 404; on the relative rates of 

 effusion of some, 423 ; on irrever- 

 sible processes in the theory of, 

 476 ; on the variation of the elec- 

 tric intensity and conductivity 

 along the electric discharge in 

 rarefied, 505. 



Geological Society, proceedings of 

 the, 155,325, 413,499, 571. 



Gore (Dr. G.) on the influence of 

 proximity of mass upon electric 

 conduction-resistance, 558. 



Gregory (Dr. J. W.) on the geology 

 of Somaliland, 157 ; on the geology 

 of British East Africa, 499, 500. 



Guard-wire, on the use of Price's, 

 in insulation tests, 343. 



flamy (M.) on an interference 

 method of measuring the diameters 

 of distant planets and stars, 503. 



Heat of combination of metals in 

 the formation of alloys, on the, 

 405. 



Helium, on the discharge of elec- 

 tricity through, 293 ; on the rate 

 of effusion of, 423. 



Honda (K.) on the change of volume 

 and leugth in iron, steel, and nickel 

 ovoids by magnetization, 329. 



Hosking (k.) on the viscosity of 

 solutions, 274. 



Howard (Dr. J. L.), obituary notice 

 of, 160. 



Hvdrogen, on the rate of effusion of, 

 423. 



Indiarubber, on the passage of argon 

 through thin films of, 220. 



cord, on the frequency of trans- 

 verse vibrations of a stretched. 

 347. 



Induction-coil, on the function of 

 the condenser in an, 216, 416. 



Insulation tests, on the use of Price's 

 guard-wire in, 343. 



Integrator, on a mechanical, 487. 



Interference method of measuring 

 the diameteis of distant planets 

 and stars, on an, 503. 



lion, on the magnetic properties of 

 the alloys of, and aluminium, 121 ; 

 on the thermo-electric behaviour 

 of an alloy of, and nickel, 309 ; on 

 the change in volume and length 

 of, by magnetization, 329. 



Irreversible processes, on certain 

 supposed, 475. 



Jeans (J. H.) on the striated elec- 

 trical discharge, 245. 



Johnson (K. It.) on the function of 

 the condenser in an induction-coil, 

 216. 



Kerr's phenomenon, on, 158. 



Kinetic energy, on the law of par- 

 tition of, 98, 226. 



