1140 



INDEX. 



Graniont (Cointe A. de) on the 

 occurrence of spark lines in the 

 arc, 287, bU. 



Graphical solution of some differen- 

 tial equations, on the, 214. 



synthesis of the linear vector 



function, on a, 545. 



Gravitation, note on, 138. 



Gravitational equations, on the 

 significance of Einstein's, in terms 

 of the curvature of the world, 174. 



field, on the deflexion of a ray 



of light in the solar, 580 ; on the 

 equations of the, 600 ; on the de- 

 rivation of the symmetrical, 19. 



h, c, and e, on the relationship 

 between, 698. 



Harmonics, on zonal, of the second 

 type, 1. 



Hartley (H.) on the spontaneous 

 crystallization of supercooled 

 liquids, 78 ; on an attempt to 

 separate the isotopes of chlorine, 

 430. 



Hartung (E. J.) on the Steele-Grant 

 microbalance, 1056. 



Heat, on the forced convection of, 

 from a pair of heated wires, 277. 



Hemsalech (G. A.) on the occur- 

 rence of spark lines in the arc, 

 287, 834. 



Hertz's theory of the contact of 

 elastic bodies, on, 320. 



Hevesy (Prof. G.) on the separation 

 of the isotopes of mercury, 31. 



Hinshelwood (C. N.) on the spon- 

 taneous crystallization of super- 

 cooled liquids, 78. 



Horton (Prof. F.) on ionization by 

 cumulative effects, 1020. 



Hughes (Prof. A. LI.) on X-rays 

 from boron and carbon, 145. 



Huyghens's principle, on retarded 

 potentials and, 1014. 



Hydrogen, on the effect of, on con- 

 tact difference of potential, 162 ; 

 on active modifications of, pro- 

 duced by alpha rays, 455. 



molecule, on the, 1025. 



Hysteresis, on oscillation-, in triode 

 generators, 177, 700. 



Identical relations in Einstein's 

 theory, on the, 600. 



Induction, on a new model of ferro- 

 magnetic, 493 ; on the mutual, 

 between two circular currents, 

 004. 



Insulation of wires in platinum 

 resistance thermometers, on the, 

 95. 



Interference fringes, on a relation- 

 ship between focal length and, 766. 



Interferometer method of deter- 

 mining the phase difference from 

 metallic reflexion, on an, 471. 



Ionization by cumulative action, on, 

 531, 1020. 



Ions, on mechanical disintegration 

 caused by positive, 226. 



Iron, on the magnetic field of, 401. 



Isotopes, on methods of separating, 

 31. 



Jackson (L. C.) on the dielectric 

 constants of esters, 481. 



Jeffery (Dr. G. B.) on the identical 

 relations in Einstein's theory, 600. 



Jeffreys (Dr. H.) on fundamental 

 principles of scientific inquiry, 

 398. 



Joffe (A. F.) on rontgenograms of 

 strained crystals, 204. 



Jones (Prof. E. T.) on the tempera- 

 ture wave spreading by conduction 

 from point and spherical sources, 

 359. 



K X-rays of silver, on the absorp- 

 tion of, in gases, 381. 



Kennard (Dr. E. H.) on retarded 

 potentials and Huyghens's prin- 

 ciple, 1014. 



Kinetic stability, on, 70. 



theory of solids, on the, 672, 



683 ; of gases, on the, 785. 



Kirpitcheva (M. V.) on rontgeno- 

 grams of strained crystals, 204. 



Krishnaiyar (N. C.) on the ampli- 

 tude of vibrations maintained by 

 forces of double frequency, 503. 



Latent heats of fusion, on, 436. 



Lead, on the arc spectra of, 287. 



Legendre functions, on products of, 

 768. 



Leyden-jar with movable coatings, 

 on the, 489. 



Lidstone (F. AT.) on the measure- 

 ment of absolute viscosity, 354, 

 1024. 



Light, on the time necessary for, to 

 excite the retina, 345 ; on the 

 convection of, in moving gases, 

 447 ; on the scattering and dis- 

 persion of, 829 j on the deflexion 

 of a ray of, in the solar gravita- 

 tional field, 580. 



