I X D E X. 



675 



Magnusson (C. E.) on the anomalous 

 dispersion of cyanin, 36. 



Majorana (Dr. Q.) on the relative 

 luminous intensities of sun and 

 sky, 555. 



Mat-ley (C. A.) on the geology of 

 Anglesey, 667. 



Metals, on magnetic induction in, 

 330. 



Methylether and hydrochloric acid, 

 on mixtures of, 593. 



Mica echelon grating, on a, 627. 



Mizuno (T.) on the function of self- 

 induction in Wehnelt's inter- 

 rupter, 246. 



Morton (Prof. W. B.) ou the pro- 

 pagation of polyphase currents 

 along a number of parallel wires, 

 563. 



Nickel, on the hysteresis of, in a 

 rotating magnetic field, 642. 



Osmotic pressure, on electromotive 

 force and, 377. 



Oxygen, on the specific ionic velo- 

 cities in, 82. 



Pearson (Prof. K.) on applications 

 of the theory of chance to racial 

 differentiation, 110 ; on the normal 

 curve of errors, 670. 



Phosphorescent glow in gases, on 

 the, 342, 455. 



Photometer, on a new sky-, 557. 



Pierce (G.) on indices of refraction 

 for electric waves, 179 ; on the 

 double refraction of electric waves, 

 548. 



Pocklington (Dr. H. C.) on the 

 equations of electro-dynamics and 

 Cremieu's experiment, 325. 



Points, on the specific velocities of 

 ions in the discharge from, 79. 



Polyphase currents, on the pro- 

 pagation of, 563. 



Positive column, theory of the, 

 361. 



Precession, on magnetic, 314. 



Pressure-gauge, on a sensitive, 96. 



Projectiles, on the resistance of the 

 air to, 530. 



Racial differentiation, applications 

 of the theory of chance to, 110. 



Radiation and absorption, on Balfour 

 Stewart's theory of the connexion 

 between, 98 ; on, produced by 

 cathode-rays, 361. 



Radio-micrometer, on a new, 179. 



Raisin (Dr. C. A.) on altered rocks 

 from Bastogne, 599. 



Rayleigh (Lord) on Balfour Stewart's 

 theory of the connexion between 

 radiation and absorption, 98 : on 

 the visibility of hydrogen in air, 

 100 ; on the demonstration at 

 atmospheric pressure of argon 

 from very small quantities of air, 

 103 ; on the concentration of 

 helium from the atmosphere, 105 : 

 on the stresses in solid bodies due 

 to unequal heating, 169; on the 

 propagation of sound between 

 parallel walls, 301. 



Refraction of sound by wind, on the, 

 159 ; on double, due to unequal 

 heating, 169 ; on indices of, for 

 electric waves, 179 ; on differ- 

 ential double, 539 ; on the double, 

 of electric waves, 548. 



RendtorfF (E. J.) on differential 

 double refraction, 539. 



Resistance of the air at speeds below 

 1000 feet a second, on the. 

 530. 



Richardson (Prof. S. W.) on the 

 magnetic properties of alloys of 

 iron and aluminium, 296, 60i. 



Rollins (W.) on the absorption of 

 gas in a Crookes tube, 671. 



Riicker (Prof. A. W.) on the mag- 

 netic field produced by electric 

 tramways, 423. 



Rutley (F.) on rhvolitic rocks from 

 Westmorland, 668. 



Sacerdote (Dr. P.) on the elongation 

 of a dielectric in an electrostatic 

 field, 357. 



Sand (Dr. H. J. S.) on the con- 

 centration at the electrodes in a 

 solution, 45. 



Schuster (Prof. A.) on electric 

 inertia and the inertia of electric 

 convection, 227 ; on magnetic 

 precession, 314. 



Self-induction, on the function of, in 

 Wehnelt's interruptor, 246. 



Shaw (P. E.) on the simple coherer, 

 265. 



Sky, on the relative luminous inten- 

 sities of sun and, 555. 



Smithells (Prof. A.) on the spectra 

 of carbon compounds, 476. 



Solutions, on the concentration at 

 the electrodes in, 45 ; on the vis- 



