730 



INDEX. 



Objectives, on the theory of the 



resolving power of, 166. 

 Parks (G. J.) on the heat evolved or 

 absorbed when a liquid is brought 

 in contact with a finelv divided 

 solid, 240. 

 Patterson (Prof. J.) on the electrical 

 properties of thin metal films, 

 652. 

 Peck (J. W.) on the steady tem- 

 peratures of a thin rod, 226. 

 Platinum, on the composition of 

 brittle, 84 ; on the resistance of 

 thin films of, 662. 

 Polarization, on rotatory, and the 

 earth's motion, 215 ; on the in- 

 fluence of convection on rotatory, 

 367. 

 Porter (T. C.) on the ebullition of 



rotating water, 330. 

 Potential, on the drop of, in vacuum- 

 tube discharge, 490. 

 Pouillet effect, on the, 240. 

 Powder, on the heat evolved or 

 absorbed on mixing a, with liquid, 

 240. 

 Preller (Dr. O. S. du Riche) on 

 pliocene glacio-fluviatile conglo- 

 merates in France and Switzer- 

 land, 519. 

 Pressures, on the comparison of 

 vapour - temperatures at equal, 

 335. 

 Propyl alcohol and water, on the 

 vapour-pressures of mixtures of, 

 117. 

 Radiation of heat and light from 



heated solid bodies, on, 560. 

 Radioactive substances, comparison 

 of the radiations from, 1 ; on 

 deviable rays of, 315. 

 Radioactivity, on induced, in air, 

 352 ; on the cause and nature 

 of, 370, 569 ; on excited, 

 704. 

 Rayleigh (Lord) on rotatory pola- 

 rization and the earth's motion, 

 , 215 ; on the distillation of binary 

 mixtures, 521 ; on motion through 

 the aether and double refraction, 

 678. 

 Reaction, on the velocity of, 270, 



468. 

 Resistance, on the change of, in 

 nickel by magnetization, 430 ; on 

 the, of bismuth, 554. 



Resolving power of objectives, on 



the theory of the, 166. 

 Resonance, on the electrical, of metal 



particles for light-waves, 425. 

 Reynolds (Prof. S. H.) on the fos- 

 siliferous Silurian beds of the 

 Ologher Head district, 416. 

 Rigidity, on the change of the 

 modulus of, of ferromagnetic sub- 

 stances by, 537. 

 Robson (W. G.) on mixtures with 

 maximum or minimum vapour- 

 pressure, ] 16. 

 Rod, on the steady temperatures of 



a thin, 226. 

 Rosenhain (W.) on an improved 



form of coal-calorimeter, 451. 

 Rotatory polarization and the earth's 

 motion, on, 215 ; on the influence 

 of convection on, 367. 

 Rutherford (Prof. E.), comparison of 

 the radiations from radioactive 

 substances, 1 ; on deviable rays of 

 radioactive substances, 315 ; on 

 the cause and nature of radio- 

 activity, 370, 569 ; on excited 

 radioactivity and ionization of the 

 atmosphere, 704. 

 Senior (E.) on the diffraction of light 

 from a dense to a rarer medium, 

 346. 

 Shimizu (S.) on the change of length 

 of ferromagnetic wires by magne- 

 tization, 338; on the change of 

 the modulus of elasticity of ferro- 

 magnetic substances by magnetiza- 

 tion, 459 ; on the change of rigidity 

 of ferromagnetic substances by 

 magnetization, 537 ; on the vibra- 

 tion of ferromagnetic wires in a 

 varying magnetizing field, 645. 

 Silver films, on the resistance of 



thin, 668. 

 Simpson (G. C.) on the electrical 

 resistance of bismuth to alter- 

 nating currents in a magnetic 

 field, 554. 

 Skinner (Prof. C. A.) on the drop 

 of potential at the electrodes in 

 vacuum-tube discharge, 490. 

 Sky, on the blue colour of the, 199, 



281. 

 Soddy (F.) on the cause and nature 



of radioactivity, 370, 569. 

 Sodium, on the vapour-density of, 

 546. 



