1042 



INDEX. 



properties of, 357 ; on the elec- 

 trical resistance of, in magnetic 

 fields, 649. 



Oba (S.) on the absorption of gamma 

 rays, 601. 



Optical activity of isotropic media, 

 on the intrinsic, 468 ; on the rota- 

 tional, in isotropic media, 994. 



Paris (E. T.) on rotatory polarization 

 in liquids, 91. 



Parr (P. H.) on the Hintereis gla- 

 cier, 153. 



Peddie (Prof. W.) on the structure 

 of the atom, 257. 



Perkins (Dr. P. B.) on the periods 

 of transformation of thorium and 

 actinium emanation, 720; on the 

 transformations in the active de- 

 posit of actinium. 690. 



Photoelectric and photochemical ac- 

 tion, on the theory of, 476. 



effect, on the long-wave limits 



of the normal, 473. 



Planimeter, on the slip-curves of an 

 Amsler, 643. 



Pocock (R. J.) on the action of a 

 disturbing force in the restricted 

 problem of three bodies, 147. 



Polarization, on rotatory, in liquids, 

 91. 



Polonium, on the gamma rays of, 

 112. 



Poole (H. H.) on the thermal con- 

 ductivity and specific heat of 

 granite and basalt, 58 ; on the 

 activity of freshly-formed radium 

 emanation, 714. 



Porter (Prof. A. W.) on rotatory 

 polarization in liquids, 91 ; on the 

 formation of images by means of 

 an opaque disk, 673. 



Poynting (John Henry), 914. 



Radiation, on the interaction be- 

 tween, and free electrons, 14 ; on 

 the thermodynamics of, 870. 



Radioactinium, on the gamma rays 

 of, 112. 



Radioactive products, on the action 

 of colloids on, in solution, 618. 



Radio-elements, on the diffusion and 

 valency of the, 586. 



Radium, on the gamma rays of, 112 ; 

 on the number of ions produced 

 by the gamma rays from, 394. 



B, on the wave-length of the 



soft gamma rays from, 854. 



E, on the diffusion of, 590. 



Radium emanation, on the activity 

 of freshly -formed, 714. 



Rails-and-slider magneto - machine, 

 on the, 428. 



Rayleigh (Lord) on applications of 

 Bessel's functions to the whisper- 

 ing gallery and allied problems, 

 100 ; on the momentum of pro- 

 gressive waves, 436. 



Reed instruments, on the air-pres- 

 sures used in playing, 271. 



Relativity, on the equations of elec- 

 trodynamics and the principle of, 

 43. * 



Resonance, on range and sharpness 

 of, under sustained forcing, 467. 



Reynolds (Pro£ S. H.) on the Ordo- 

 vician and Silurian rocks of the 

 Lough Xafooey area, 538. 



Ribaud (Gr.) on the magneto-optics 

 of sodium vapour, 1009. 



Richardson (H.) on the gamma rays 

 from the uranium products, 252. 



Richardson (Prof. O. W.) on the 

 theory of photoelectric and photo- 

 chemical action, 476. 



Rocksalt, on the intensity of reflexion 

 of X rays by, 889. 



Rontgen radiation, on the distribu- 

 tion of scattered, 383. 



Rose-Innes (J.) on the physical in- 

 terpretation of the Michelson- 

 Morley experiment, 150 ; on the 

 integration of the differential 

 equation applicable to a plane 

 progressive wave, 669. 



Russell (Dr. A. S.) on the gamma 

 rays of polonium, radium, and 

 radioactinium, 112. 



Rutherford (SirE.) on the structure 

 of the atom, 488 ; on the wave- 

 length of the soft gamma rays 

 from radium B, 854. 



Salt solutions, on the relationship 

 between the viscosity, density, and 

 temperature of, 288. 



Savidge (H. G.) on the integration 

 of a class of linear differential 

 equations of the second order, 608. 



Schwatt (Prof. I. J.) on the sum of 

 an infinite series as the solution 

 of a linear differential equation, 

 659. 



Selenium, on the temperature of sub- 

 limation of compounds of, 13. 



blocks, on the properties of, 



370. 



