474 



INDEX. 



Frankland (Prof. E.) on the combus- 

 tion of hydrogen and carbonic ox- 

 ide in oxygen under great pressure, 

 309. 



Gases, on the internal motions of, 

 132. 



Geological Society, proceedings of 

 the, 7U 157,232. 



Gill (J.) on the dynamical theory of 

 heat, 1. 



Glacial period, on the probable date 

 of the, 141,362. 



Gladstone (Dr. J. H.) on refraction- 

 equivalents, 311. 



Glass, on gilding, for the preparation 

 of optical mirrors, 77- 



Globe, on the electric condition of the 

 terrestrial, 81. 



Gold-fields of California, on the che- 

 mical geology of the, 321, 422. 



Gore (G.) on the preparation of car- 

 bon tubes, crucibles, &c., 234 ; on 

 the relation of mechanical strain of 

 iron to magneto-electric induction, 

 446. 



Graham (J.) on the occlusion of hy- 

 drogen by metals, 63. 



Guthrie (Prof. F.) on a new thermo- 

 stat, 30. 



Heat, on the dynamical theory of, 1 ; 

 on the expansion of solids by, 31; 

 on the polarization of, 161, 293 ; 

 on the absorption of, by liquids, 

 206 ; on the conductivity of some 

 liquids for, 469. 



Helmholtz (Prof.) on discontinuous 

 movements of fluids, 337. 



Herschel (Lieut. J.) on the spectra of 

 some of the southern nebulae, 307. 



Huggins (W.) on the spectra of the 

 sun and some of the stars and ne- 

 bulas, 55 ; on the spectrum of 

 Brorsen's comet, 60 ; on the spec- 

 trum of Comet II., 1868, 39'3. 



Hydrogen, on the occlusion of, by 

 metals, 63 ; on the combustion of, 

 in oxygen under great pressure, 

 309. 



Induction, on the law of, 317, 319. 



Involutes to a circle, on successive, 

 295, 459. 



Iridium, on the separation of, from 

 rhodium, 256. 



Iron, on the disposition of, in varie- 

 gated strata, 157. 



Jamin (M.) on magneto-electrical 



machines, 235 ; on the laws of in- 

 duction, 317, 319; on a thermo- 

 rheorueter, 396. 



Kirkman (J. P.) on the general solu- 

 tion of algebraic equations, 169, 

 264. 



Kundt (A.) on the velocity of sound 

 in tubes, 22. 



Light, on the internal motions of 

 gases compared with the motions 

 of waves of, 132 ; on the electro- 

 magnetic theory of, 316. 



Liquids, on waves in, 52 ; on the ab- 

 sorption of heat by, 206; on the 

 polarization of heat radiated from 

 the surfaces of, 293 ; on the con- 

 ductivity of some, for heat, 469. 



Lyman (C. S.) on a new form of 

 wave-apparatus, 14. 



Magnetism, experimental researches 

 in, 81 ; on the molecular change 

 produced in steel bars by, 471 . 



Magneto-electrical machines, on, 235. 



■ induction, on the relation 



of mechanical strain of iron to, 446. 



Magnus (Prof.) on the polarization of 

 heat at 100° C, and on the motion 

 accompanying heat - conduction, 

 161 ; on the polarization of heat 

 radiated from the surfaces of li- 

 quids, 293; on the diathermancy 

 of the chloride of potassium, 320. 



Maw (G.) on the disposition of iron 

 in variegated strata, 157. 



Maxwell (J. C.) on a method of 

 making a direct comparison of 

 electrostatic with electromagnetic 

 force, and on the electromagnetic 

 theory of light, 316. 



Metals, on the occlusion of hydrogen 

 gas by, 63. 



Mirrors, on gilding glass for the pre- 

 paration of optical, 77- 



Moon (R.) on the theory of pressure 

 in fluids, 27, 116; on the impact 

 of compressible bodies considered 

 with reference to the theory of pres- 

 sure, 154. 



Nebulae, on the spectra of the, 55 ; 

 on the spectra of some of the 

 southern, 307. 



Odling (W.) on some effects of the 

 heat of the oxyhydrogen flame, 68. 



Optical experiment, on an, 43. 



Oxyhvdrogen flame, on some effects 

 of the heat of the, 68. 



