INDEX. 



921 



Flint-glass, on the polarization of, in 



a steady field of force, 392. 

 Fluid, on the inversion-points for a, 

 passing through a porous plug, 

 888. 

 Friction in gases at low pressures, 



on, 376. 

 Gamma rays, on the question of the 



homogeneity of, 725. 

 Gases, on the theory of the small 

 ion in, 201, 817 ; oa friction in, at 

 low pressures, 376. 

 Geological Society, proceedings of 



the, 206, 332, 447, 653, 820, 917. 

 Gibson (Prof. A. H.) on the vari- 

 tion of disk resistance with tempe- 

 rature in water, 513. 

 Gill (E. W. B.) on the electrical 

 effect of the ultra-violet spectrum, 

 290. 

 (ilass, on the action of the a rays on, 

 192; on the polarization of flint, 

 in a steady field of force, 396. 

 Gold (E.) on the relation between 

 periodic variations of pressure, 

 temperature, and wind in the 

 atmosphere, 26, 448. 

 Gravitational problem, note on a, 



91. 

 Grayson (II. J.), recent improve- 

 ments in rock -section cutting 

 apparatus, 918. 

 llalos, on pleochroic, 327, 630. 

 Hargreaves (R.) on the ignoration 



problem, 486. 

 Harrison (W. J.) on the decay of 



waves in a canal, 906. 

 Havelock (Dr. T. H.) on the instan- 

 taneous propagation of disturbance 

 in a dispersive medium, 160. 

 Helical coil, on the effective resistance 



and inductance of a, 77. 

 Ileslop (Miss M. K.) on the dyke at 



Crookdene, 654. 

 Hogg (J. L.) on friction in gases at 



low pressures, 376. 

 Ilollnagel (H.) on measurements in 

 the extreme infra-red spectrum, 

 761. 

 Iloustoun (Dr. R. A.) on the damping 

 of long waves in a rectangular 

 trough, 205. 

 Hume (Dr. W. F.) on the granite- 

 ridges of Kharga oasis, 448. 

 Hydrogen, on the pressure of the 



electric wind in, 449. 

 Ignoration problem, en the, 486. 



Phil. Mag. S. 6. Vol. 19. No. 



Inductometers, on the use of mutual, 

 497. 



Infra-red spectrum, on measure- 

 ments in the, 761. 



Inversion-points for a fluid passing 

 through a porous plug, on the, 

 888. 



Ion, on the theory of the small, in 

 gases, 201, 817. 



Ionization of air, on the effect of dust 

 and smoke on the, 657. 



Iron wires, on effects of bending 

 overstrain in soft, 619. 



Jeivis-Smith (F. J.) on an optical 

 method of reading the torsional 

 angle of a rotating shaft, 300. 



Joly (Prof. J.) on pleochroic halos, 

 327, 630, 



Jones (Prof. II. C.) on the absorp- 

 tion spectra of uranous and uranyl 

 compounds, 566. 



Jones (O. T.) on the Hartfell- 

 Valentian succession around Plyn- 

 limon, 332. 



Jupiter, on photographs of, taken at 

 the Lowell Observatory, 488. 



Ker and kei functions, tables of the, 

 49. 



Kleeman (Dr. R. D.) on the nature 

 of the forces of attraction between 

 atoms and molecules, 783 ; on the 

 radius of the sphere of action of a 

 molecule, 840. 



Kuehne (J. M.) on the electrostatic- 

 effect of a changing magnetic 

 field, 461. 



Kuenon (Prof. J. P.) on Pirani's 

 method of measuring self-induct- 

 ance, 439. 



Kundt's tube, on Konig's theory of 

 the ripple formation in, 476. 



Laws (S. O.) on the change of resist- 

 ance of metals in a magnetic 

 field at different temperatures, 

 685. 

 Lees (Dr. C. H.) on the laws re- 

 garding the direction of thermo- 

 electric currents, 508. 

 Lewis (Dr. W. C. McC.) on the 

 energy of a double-layer condenser 

 of electronic origin, 573. 

 Light, on a theory of the structure 

 of the electric field and its applir- 

 cation to, 301 ; on the reflexion of, 

 at a moving mirror, 824. 

 Linities of the nth order, on the 

 theory of, 144. 



114. June 1910. 3 O 



