[ 1010 ] 



INDEX to VOL. XX, 



^\IR, on the absorption of cathode 



particles by, 320. 

 Alkali sulphates, on the positive 

 thermions emitted by the, -'< s l ; 

 metals, on the positive thermions 

 emitted l>\ salts of the, 999. 

 Allen (Dr. ' II. S.) on the photo- 

 electric fatigue of metals, "> <- >i. 

 Alpha particles, on the number of, 

 emitted bv uranium and thorium, 

 ($91 ; on tin 1 probability variations 

 in the distribution i f. I 

 Alternate currenl circuits, on a galva- 

 nometer lor, ! 

 Aluminium phosphate, on positive 

 : rification due to beating, 678, 

 Anderson 1 1 >r. T. ) on the volcano of 



Matavanu in Savaii, 1008. 

 Aromatic compounds, on threefold 



i misfion-spi ctra of solid, 619. 

 Atmos] here, on the amount of 



radium emanation in the, I ■ 

 Atoms, on the f-bape of, 229; on the 



mechanical vibrati n of, 657. 

 Attraction constanl of a molecule of 



b substance, on the, 9< 5. 

 Bafeker (Dr. G.) on the thermodyna- 

 mics of the capillary layer betw en 

 the hi d i iprem ous phases of the 

 liquid and the vapour, 136. 

 Barkis (Prof. ( '. ( \.) on t\ pica! cas< b 



of ionization by X-rays, 370. 

 Barton (Prof. E. II.) on the vibra- 

 tion curves of violin bridge and 

 strings, 456, 

 Barus (C. & M.) on the interference 

 of the reflected-diffi acted and 

 diflracted-reflected rays of a plane 

 transparent grating, 45. 

 Bateman (11.) on the relation be- 

 tween electromagnetism and geo- 

 metry, 623 : on the probahility 

 distribution of a particles, 704. 

 Baynes (R. E.) on Mr. Bateman's 



paper on earthquake-waves, 664. 

 Beatty (It. T.) on the production of 

 cathode particles by homogeneous 

 Rontgen radiations and their ab- 

 sorption by hydrogen and air, 320. 

 Berry (G. II.) on the pianoforte 

 sounding-board, 662. 



Bessel functions of imaginary prgu- 

 ment, on the approximate calcula- 

 tion of, 988. 



Beta particles, on the absorption and 

 reflexion r»f the, by matter, 879; 

 on the reflexions of homogeneous, 

 . f different velocities, 866. 



ravs, on the range of, 386 ; on 



the homogeneity of the, from 

 radium E, ' s 7<>. 



Blakesley (T. II.) on a means oi 

 measuring the apparent diameter 

 of the pupil of the eye in very 

 feeble light, 966. 



Boiling-point, on relations between 



the phvtical properties of liquids 

 at the,*522. 



Books, new :-- Tissot's Les Oscilla- 

 tions eh <■! riques, 217 ; Jouguet's 

 Thlorie des Moteurs 'I bermiques, 

 2 17 ; Bulletin of the Bur* au of 

 Standards, 382; Kelvin's Mathe- 

 matical and Physical Papers, vol. 

 iv., 540 ; ( !iabtree's Elementary 

 Treatment of the Theory of Spin- 

 ning Tops and < >\ roscope .Motion, 

 542; Jahnke and Etude's Funk- 

 tionentafelu mil Formeln und Kur- 

 ven, 642; Jones's Introduction to 

 Physical Chemistry, 1006; An- 

 nuaire pour l'an 191 1, 1007; de 

 Tunzelmann's Treatise on Elec- 

 trical Theory and the Problem of 

 the Universe, 1007; U.S. Coast 

 and Geodetic Survey, 1008. 



Bosworth (T. O.) on metamorphism 

 around the Rcss of Mull granite, 

 700. 



Boyle (Dr. R. W.) on the volatiliza- 

 tion of radium emanation at low 

 temperatures. 065. 



Bragg (Prof. W. II.) on the cor- 

 puscular hypothesis of the y and 

 X ravs and the range of (i rays, 

 385. 



Brass, on the specific charge of the 

 ions emitted by hot, 666. 



Canalstrahlen, on the, 7o2. 



Capillary layer between homogeneous 

 phases of liquid and vapour, on 

 the, 135. 



