INDEX. 



487 



Melsens (M.) on the condensation of 

 gases and liquids by wood-charcoal, 

 410. 



Metals, on the relationship of the 

 magnetic, 478. 



Metamorphism, observations on, 217. 



Mills (Dr. E. J.) on statical and dy- 

 namical ideas in chemistry, 398. 



Molecular changes, on certain re- 

 markable, occurring in iron wire at 

 a low red heat, 472. 



Molecules, on, 453. 



Moon, on the libration of the, 305. 



Moon (R.) on gaseous pressure, 87 ; 

 on the transmission of sound 

 through air, 122; on the measure 

 of work in the theory of energy, 

 219; on the principles of hydrody- 

 namics, 24/, 446. 



Morton (Prof. H.) on the fluorescent 

 relations of certain solid hydrocar- 

 bons found in petroleum distillates, 

 89. 



Motion, on the idea of, 398. 



Mountains, on the origin of, 41, 131, 

 210,276,363. 



Neison (E.) on the possible existence 

 of a lunar atmosphere, 411. 



Nichols (R. C.) on the determination 

 of the specific heat of gases and 

 vapours at constant volumes, 289, 

 361. 



Nickel, on the maximum of magne- 

 tism of, 140 ; on solution of nitrate 

 of, as an absorption-preparation, 

 329. 



Nodal lines of a square plate, on the, 

 166, 246. 



Oceanic depressions, on the formation 

 of, 363. 



Ohm's law, on a theoretic deduction 

 of, 201. 



Pellet (M.) on explosions produced 

 by high tones, 256. 



Pendulum, on the history of the hori- 

 zontal, 412. 



Petroleum, on the fluorescent rela- 

 tions of certain hydrocarbons con- 

 tained in, 89. 



Phillips (J. A.) on the composition 

 and origin of the waters of a salt 

 spring in Huel Seton Mine, 26. 



Photography, on diffraction-spec- 

 trum, 417. 



Potier (M.) on the reflection and re- 

 fraction of light, 252, 



Quincke (G.) on a new method for 

 examining the divisions of gradu- 

 ated circles, 174; on the reflection 

 of light, 252. 



Rayleigh (Lord) on the nodal lines of 

 a square plate, 166, 246; on the 

 vibrations of approximately simple 

 systems, 357 ; on the fundamental 

 modes of a vibrating system, 434. 



Reynolds (Prof. O.) on the action of 

 a blast of sand in cutting hard ma- 

 terial, 337. 



Rood (Prof. O. N.) on a convenient 

 e} r epiece-micrometer for the spec- 

 troscope, 176. 



Rowland (H. A.) on magnetic perme- 

 ability, and the maximum of mag- 

 netism of iron, steel, and nickel, 140. 



Royal Society, proceedings of the, 

 80, 314, 406. 



v ( V 



Safarik (Prof.) on the history of the 

 horizontal pendulum, 412. 



Sand, on the action of a blast of, in 

 cutting hard material, 337. 



Schneebeli (H.) on electrical figures 

 on conductors, 86. 



Sekulic' (M.) on a remarkable inter- 

 ference-phenomenon, 332. 



Sound, on the transmission, in one 

 direction, of, through air, 122, 



Specific -gravity bottle, on a, for li- 

 quids spontaneously inflammable 

 in contact with air, 308. 



Spectra of gases, on the effect of pres- 

 sure on the character of the, 406. 



Spectroscope, on the use of a diffrac- 

 tion-grating as a substitute for the 

 train of prisms in a solar, 87 ; on 

 a convenient eyepiece-micrometer 

 for the, 1/6 ; on a new, 439. 



Spectrum-analysis, researches in, 407. 



Stationary motions, on a new me- 

 chanical theory relative to, 236, 

 266. 



Stearn (C. H.) on the effect of pres» 

 sure on the character of the spectra 

 of gases, 406. 



Steel, on the maximum of magnetism 

 of, 140; on the effects of magneti- 

 zation in changing the dimensions 

 of bars of, 177- 



Stefan (Prof.) on evaporation, 483. 



Stuart (J.) on the attraction of a gal- 

 vanic coil on a small magnetic mass, 

 23L 



Sun, on the temperature and physical 



