[ 573 ] 



INDEX to VOL. XLIX 



ABRAHAM (M.) on Kerr's pheno- 

 menon, 158. 



Air, on the distillation of liquid, 

 517. 



Alloys, on the heat of combination 

 of metals in the formation of, 

 405. 



Aluminium and iron, on the mag- 

 netic properties of the alJoya of, 



Argon, on the passage of, through 

 thin films of indiarubber, 220; on 

 the discharge of electricity through, 

 293 ; on the rate of effusion of, 

 423. 



Ayrtou (Prof. W. E.) on the use of 

 Price's guard-wire in insulation 

 tests, 343. 



Baker (T. J.) on the frequency of 

 transverse vibrations of a stretched 

 indiarubber cord, 347. 



Baly (E. C. 0.) on the distillation 

 oi* liquid air, 517. 



Barrett (Prof. W. F.) on some novel 

 thermo-electric phenomena, 309. 



Beattie (Dr. J. C.) on thermal 

 radiation in absolute measure, 543. 



Becquerel rays, on the chemical 

 effects produced by the, 242. 



Bedford (T. G.) on the expansion of 

 porcelain with rise of temperature, 

 90. 



Blakesley (T. H.) on improved 

 formulae and methods connected 

 with lenses, 447. 



B!anford (Dr. W. T.) on a particular 

 form of surface seen on Loch 

 Lochy, 413. 



Blythswood (Lord) on the echelon 

 spectroscope, 384 ; on the Zeeman 

 effect on the chief lines in the 

 mercury spectrum, 394. 



Boltzmann's H theorem, on, 47G. 



Bonney (Prof. T. G.) on the Bunter 

 pebble -beds of the Midlands, 501. 



Books, new : — Taylor's Introduction 

 to the Differential aud Integral 

 Calculus and Differential Equa- 

 tions^! 1; Science Abstracts,vol.ii., 

 411; Maurain's Le Magnetisme 

 du Fer, 412 ; Cotton's Le Pheno- 

 mene de Zeeman, 413 ; Wallerant's 

 Groupements Crystallins, 496 : 

 Turpain's Recherches experimen- 



tales sur les Oscillations Elec- 

 triques, 497 ; Mm ray's Plaue 

 Trigonometry, 498 ; * Landolt's 

 Optical Activity and Chemical 

 Composition, 498 ; Fedici's Ueber 

 die mathematische Theorie der 

 elektrodynamischen Induction, 

 570. 



Bottomley (Dr. J. T.) on thermal 

 radiation in absolute measure, 

 543. 



Brodhun (Prof. E.) on the prism 

 photometer, 541. 



Burbury (S. H. ) on the law of par- 

 tition of kinetic energy, 226 ; on 

 certain supposed irreversible pro- 

 cesses, 475. 



Carbon monoxide and dioxide, on 

 the rates of effusion of, 423. 



Cells, voltaic, on the osmotic pres- 

 sure or diffusion views of, 454 ; 

 on the reversibility of, 491. 



Clinch (G.) on drift-gravels at AVest 

 Wickham, 157. 



Condenser, on the function of the, 

 in an induction-coil, 216, 416. 



Conduction-resistance, on the in- 

 fluence of proximity of mass upon, 

 558. 



Conductivities of heterogeneous 

 media for a steady flux having a 

 potential, 221 ; on the therm d, of 

 mixtures and their constituents, 

 280. 



Conductivity, on the thermal, of 

 vulcanite, 15. 



, on the variation of the electric 



intensity and, along the electric 

 discharge in rarefied gases, 505. 



Contact electricitv, on, 70, 351, 

 454. 



Crystalline media, on the coincidence 

 of refracted rays of light in, 262. 



Crystals, on reflexion and refraction 

 at the bound try of, 237. 



Curie (M. P. & Mine.) on the chem- 

 ical effects produced by the Bec- 

 querel rays, 242. 



Ovanogen, on the rate of effusion of, 

 "423. 



Cylindrical lenses, on obliquely 

 crossed, 316. 



Davison (Dr. C.) on earthquake- 

 sounds, 31. 



