INDEX. 



475 



Iron, on certain molecular changes 

 which occur in, during heating* and 

 cooling, 389. 



Jar-discharge, on stratified and un- 

 stratified forms of the, 231. - 



Jenliin (Prof F.) on friction between 

 surfaces moving at low speeds, 308. 



Kern (S.) on the new metal davyum, 

 158, 39.3. 



Kinahan (G. H.) on the classification 

 of the granitic rocks of Ireland, 311. 



Latitudes, on a correction to observed, 

 302. 



Le Sage's theory of gravitation, on, 

 206, 364. 



Light, on a curious effect of absorp- 

 tion of, 61 ; on the influence of, on 

 electrical tension in metals, 330; 

 on the gamut of, 396. 



Light-absorption according to Max- 

 well's theory, on, 313. 



Lightning, on a case of, 105. 



Lippmann (M.) on the electrical and 

 capillary properties of mercury, 

 238. 



Liquid surfaces, on the variations of 

 potential eneigy of, 40. 



Liquids, on the production of induced 

 currents in, by mangeto-eleclric 

 induction, 143. 



Lowne (B. T.) on the effect of chro- 

 matic aberration in distant vision, 

 239. 



Mackintosh (D.) on the origin of 

 boulder-clay, 236. 



Magnet, on rotation of the plane of 

 polarization by reflexion from tlie 

 pole of a, 104. 



Magnetic behaviour of chemical com- 

 pounds, on the, 161, 276. 



Mallet (Prof. J. W.) on the density 

 of solid mercury, 145 ; on the ap- 

 parent alteration in weight of a 

 wire traversed by an electric cur- 

 rent, 321. 



(R.) on the piling-up of vol- 

 canic cones, 151 ; on the seismic 

 results obtained from the Hallet's- 

 Point explosion, 298. 



Mensbrugghe (G. van der) on the 

 variations of potential energy of 

 liquid surfaces, 40. 



Mercury, on the density of solid, 145 ; 

 on the electrical and capillary pro- 

 perties of, 238. 



Metal, on a new, 158, 395. 



Metals, on the influence of light on 

 electrical tension in, 330. 



Meteorological observations, on the 

 treatment of, 1. 



Moser (J.) on the spectra of chemical 

 compounds, 444. 



Moss (R. J.) on Crookes's force, 67. 



Muir (M. M. P.) on chemical classi- 

 fication, 81, 187, 257 ; on essential 

 oil of sage, 336. 



Nebular hypothesis, on the, 291. 



Neyreneuf (V.) on specific inductive 

 power, 316. 



Norris (Prof.) on certain molecular 

 changes which occur in iron and 

 steel during heating and cooling, 

 389. 



Parallelepipedal system, on the con- 

 ditions of perpendicularity in a, 18. 



Perry (Prof. J.) on ice as an electro- 

 lyte, 114. 



Picoline and its derivatives, on, 

 241. 



Platinum, on the specific heat and 

 heat of fusion of, 318. 



Polarization, on rotation of the plane 

 of, by reflection from the pole of a 

 magnet, IO4. 



Preston (S. T.) on the equilibrium 

 of pressure in gases, 77 ; on the 

 nature of what is commonly termed 

 a '' vacuum," 110; on some dyna- 

 mical conditions applicable to Le 

 Sage's theorv of gravitation, 206, 

 364. 



Ramsay (Dr. W.) on picoline and its 

 derivatives, 241. 



Rayleigh (Lord) on the lower limit 

 of the prismatic spectrum, 848. 



Reitlinger (M.) on some remarkable 

 phenomena in Geissler tubes, 240. 



Retina, on the fluorescence of the 

 living, 397. 



Royal Society, proceedings of the, 67, 

 141, 226, 368, 389. 



Sage, on essential oil of, 336. 



Seismic results obtained from the 

 Hallet's-Point explosion, on the, 

 298. ^ 



Serpentine of the Lizard district, on 

 the, 74. 



Smith (Prof. H. J.) on the conditions 

 of perpendicularity in a parallele- 

 pipedal system, 18. 



Solar system, on the chemical con- 

 stituents of the, 379. 



