INDEX. 



711 



Nickel and nickel-steel, on the mag- 

 netization and magnetic change of 

 length in, 548, 642. 



Numbers, on the transtinite, 439. 



Optical paradox, on an, 126. 



Osmotic experiments on mixtures of 

 alcohol and water, 1. 



Oxygen, on the union of, with hydro- 

 gen at low pressures, 467. 



Peck (J.) on the effect of a transverse 

 magnetic field on the discharge of 

 electricity through a vacunni-tu.be, 

 67. 



Pendulum accelerometer, on the, 

 260. 



Platinum, on the union of hydrogen 

 with oxygen at low pressures 

 caused by the heating of, 467. 



Polarization, on the asther drift and 

 rotary, 383. 



Polonium, on the deflexion of a rays 

 from, 538. 



Potential-difference and spark-length, 

 on the relation between, 617. 



Preumont (G. F.) on the geology of 

 the N.E. territories of the Congo 

 Free State, 190. 



Price (W. A.), the electrical resistance 

 of a conductor the measure of the 

 current passing, 352. 



Prismatic colours, on the origin of 

 the, 401, 574. 



Pyknometer, on a new form of, 269. 



Radiation, on the constitution of 

 natural, 574. 



Radiation constant, on a simple 

 method of determining the, 270. 



Radioactive matter present in the 

 atmosphere, on the, 98. 



properties of actinium, on the, 



34 ; of uranium, on the, 45. 



Radioactivity, plan of an atom 

 capable of storing an electrion 

 with enormous energy for, 695. 



Radium, on the a rays from, 163, 

 193, 318, 600 ; on the properties 

 of, in minute quantities, 183 ; on 

 the charge carried by the a 

 and /3 rays of, 193 ; on slow trans- 

 formation products of, 290 ; on the 

 scintillations produced by, 427 ; on 

 the emission of negative electricity 

 by the emanation from, 460 ; on 

 the method of transmission of the 

 excited activity of, to the cathode, 

 526, 532 ; on the deflexion of a 

 rays from, 538. 



Raisin (Miss C. A.) on the micro- 

 scopic structure of serpentine, 703. 



Rastall (R. H.) on the Blea-Wyke 

 beds, 189. 



Rayleigh (Lord) on the momentum 

 and pressure of gaseous vibrations 

 and on the connexiou with the 

 virial theorem. 364 ; on the origin 

 of the prismatic colours, 401. 



Resonance radiation of electrons, on 

 the, 513. 



Richardson (L.) on the Rhaetic 

 deposits of Glamorganshire and 

 on Rhgetic rocks at Berrow Hill, 

 616. 



Richardson (Dr. O. W.) on the 

 structure of ions formed in gases 

 at high pressure, 177 ; on the rate 

 of recombination of ions in leases, 

 242. 



Robb (A. A.) on the conduction of 

 electricity through gases between 

 parallel plates, 237, 664. 



Rotation of a refracted ray, on the 

 change produced by the Earth's 

 motion on the, 591. 



Rudge (W. A. D.) on the properties of 

 radium in minute quantities, 183. 



Rutherford (Prof. E.) on some 

 properties of the a rays from 

 radium, 163 : on the charge carried 

 by the a and /3 rays of radium, 

 193; on slow transformation pro- 

 ducts of radium, 290. 



Schmitz (H. E.) on the thermoelectric 

 circuit of three metals, 631. 



Sharpe (J. W.) on the boomerang, 60. 



Shimizu (S.) on the magnetization 

 and magnetic change of length in 

 ferromagnetic metals and alloys, 

 548, 642. 



Sibiy (T. F.) on the carboniferous 

 limestone of Weston-super-Mare, 

 192. 



Slater (Miss J. M.W.) on the emission 

 of negative electricit} r by radium 

 and thorium emanations, 460. 



Sodium vapour, on the magneto- 

 optics of, 408 ; on the fluorescence 

 of, 513. 



Solubilities of diethylamine and 

 water, on the mutual, 397. 



Sound-box, on the vibrations simul- 

 taneously obtained from a, and 

 string, 149. 



Sowter (R. J.) on ellipsoidal lenses, 

 180. 



