INDEX. 



547 



Hastings (C. S.) on a theory of the 

 constitution of the sun, 91. 



Haughton (Rev. Dr.) on the secular 

 inequalities in terrestrial climates, 

 543. 



Heat, on a convenient term express- 

 ing the change from radiant, into 

 sound, 377. 



Heat-rays, on the absorption of dark, 

 by gases and vapours, 1. 



Helmholtz (Prof.) on stereoscopic 

 vision, 507. 



Hennessy (Prof. H.) on the figures 

 of the planets, 283. 



Herschel (Major J.) on General Schu- 

 bert's proposal relating to the 

 Russo-Scandinavian arc, 313. 



Images formed without reflection or 

 refraction, on, 214. 



Integrating-machine, on an, 342. 



Isomeric bodies, on specific refraction 

 and dispersion of, 54. 



Jacques (M.) on the liberation of the 

 electricity in tourmaline by pres- 

 sure, 224. 



Kirchhoff (Prof. G.) on the measu- 

 ring of electrical conductivities, 81. 



Latitudes, on the correction of, for 

 local attraction, 314. 



Lawes (J. B.) on the formation and 

 decomposition of carbonic acid, 206. 



Lecher (Dr. E.) on the absorption of 

 dark heat-rays by gases and va- 

 pours, 1 ; on the absorption of solar 

 radiation by the carbonic acid of 

 our atmosphere, 76. 



Light, on a convenient term express- 

 ing the change of, into sound, 377; 

 on the magnetic rotation of pola- 

 rized, 254 ; on the rate of the de- 

 crease of the, given off by a phos- 

 phorescent surface, 209 ; on the 

 rectilinear transmission and spon- 

 taneous diffusion of, 249. 



Lippmann (Prof.) on the choice of 

 the unit of force in absolute elec- 

 tric measurements, 226 j on the 

 principle of the conservation of 

 electricity, 474. 



Liquids, on the friction in free sur- 

 faces of, 132. 

 Lodge (Dr. J. 0.) on action at a dis- 

 tance, 36, 220, 529. 

 Lo^ic, on implicational and equa- 



tional, 40. 

 Luminiferous aether, on the existence 

 of the, 477. 



McColl (H.) on implicational and 

 equational logic, 40. 



Macfarlane (Dr. A.) on the analysis 

 of relationships, 436. 



Magnetic attractions, on the new 

 theory of, 254. 



effects produced by the motion 



of electrified bodies, on the, 229. 



Magnetism, on the effect of great 

 cold upon, 393. 



Matter, on certaiu dimensional pro- 

 perties of, in the gaseous state, 103, 

 335. 



Melting-points of the elements, on a 

 relation between the, and their 

 solid binary compounds, and the 

 heats of formation of the latter, 

 28. 



Mercadier (E.) on radiophony, 78. 



Nebular hypothesis, confirmation of 

 the, 226. 



Nichols (Dr. E.) on the coefficient of 

 expansion of gas-solutions, 113. 



Nichols (E. H.) on the electric ab- 

 sorption of crystals, 414. 



Oncosimeter, on the determination of 

 the density of fluid bismuth by 

 means of the, 295. 



O'Shea (L. T.) on a relation between 

 the melting-points of the elements 

 and their solid binary compounds 

 and the heats of formation of the 

 latter, 28. 



Overbeck (Dr. A.) on the friction in 

 free surfaces of liquids, 132 ; on the 

 motion of an incompressible viscous 

 fluid in the vicinity of a sphere, 153. 



Oxides, on the specific volumes of, 60. 



Ozone, on the specific magnetism of, 

 811. 



Pernter (J.) on the absorption of dark 

 heat-rays by gases and vapours, 1. 



Perry (J.) on contact electricity, 43. 



Phosphorescent surface, on the rate 

 of the decrease of the light given 

 off by a, 209. 



Phosphorograph of a solar spectrum, 

 on the, 157. 



Photophone, on the construction of 

 the, 286. 



Physical units of Nature, on the, 381. 

 Pile, on the measurement of the 



electromotive force of the, 153. 

 Planets, on the figures of the, 283. 

 Preston (S. T.) on action at a dis- 

 tance, 38, 218; on the mechanical 

 theory of gravitation, 391. 



