INDEX. 



'9 



Capacities, on a method of deter- 

 mining-, in measurements of ioniza- 

 tion, 42. 



Capillary tubes, on a method of cali- 

 brating fine, 386. 



Chains, on the oscillations of, 

 736. 



Chapman (T. C.) on homogeneous 

 Rontgen radiation from vapours, 

 446. 



Chemical attraction between atoms, 

 on the law of, 83. 



Colouring, on metallic, in birds and 

 insects, 5-54. 



Condensation nuclei produced by the 

 action of light on iodine vapour, 

 on, 465. 



Conduction of heat through rarefied 

 gases, on the, 11. 



Cooke (Prof. H. L.) on the heat 

 liberated during the absorption of 

 electrons by different metals, 

 404. 



Cross (Dr. W.) on the natural classi- 

 fication of igneous rocks, 174. 



Curvature of spherical surfaces, on a 

 revolving table method of deter- 

 mining the, 218. 



Cuthbertson (C.) on some constants 

 of the inert gases, 69. 



Cylinder, on the uniform rotation of 

 a circular, 342 ; on the motion of 

 a, through viscous liquid, 706. 



Density, temperature, and pressure 

 of substances, relations between 

 the, 325. 



Dielectric sphere, on the damping of 

 the vibrations of a, 438. 



Diffraction, on the photometric 

 measurement of the obliquity 

 factor of, 618. 



Discharge from an electrified point, 

 on the, 585. 



Di.bson (G. M. B.) on a revolving 

 table method of determining the 

 curvature of spherical surfaces, 21 8. 



Donaldson (H.) on the problem of 

 uniform rotation treated on the 

 principle of relativity, 319. 



Dust figures, on electric, 268. 



Earth inductor, on a new form of, 

 579. 



Elastic string, on an approximate 

 theory of an, vibrating in a viscous 

 medium, 742. 



Electric, discharge in hydrogen, on 

 the, 598. 



Electric dust figures, on, 268. 



waves, on the bending of, round 



a large sphere, 62, 281. 



wind, on the pressure of the, 



591. 



Electricity, on the recent theories of, 

 196; on rays of positive, 225; on 

 the discharge of positive from hot 

 bodies, 634. 



Electrification of the air near the 

 Zambesi Falls, on the, 611. 



Electrified point, on the discharge 

 from an, 585. 



sphere, on the initial accele- 

 rated motion of an, 640. 



Electromagnetic pulse theory, on the 

 distribution of secondary X rays 

 and the, 270. 



Electrons, on the heat liberated 

 during the absorption of, 404 ; on 

 the number of, in the atom, 718 ; 

 on the longitudinal and transverse 

 mass of, 733. 



Energy, on Hamilton's equations 

 and the partition of, between 

 matter and radiation, 15, 



Eve (Dr. A. S.) on the ionization of 

 the atmosphere due to radioactive 

 matter, 26. 



Fit, on restricted lines and planes of 

 closest, to systems of points, 367. 



Flames, on the velocity of the ions 

 of alkali salt vapours in, 711. 



Fletcher (A. L.) on the radioactivity 

 of the Leinster granite, 102 ; on 

 the radioactivity of some igneous 

 rocks from Antarctic regions, 

 770. 



Fletcher (H.) on the question of 

 valency in gaseous ionization, 753. 



Fluid, on the uniform motion of a 

 sphere through a viscous, 112. 



Fluid motion, on rotational, in a 

 corner, 187. 



Fluorescence, on the destruction of 

 the, of iodine and bromine vapour 

 by other gases, 309; on the in- 

 fluence upon the, of iodine and 

 mercury of gases with different 

 affinities for electrons, 314. 



Franck (J.) on the transformations 

 of a resonance spectrum into a 

 band-spectrum by presence of 

 helium, 265; on the influence upon 

 the fluorescence of iodine and 

 mercury of. gases with different 

 affinities for electrons, 314. 



