[ 954 ] 



INDEX to VOL. XXII. 



Aberration in a dispersive 



medium, on, 130. 

 Absorption and dispersion, on, 303, 

 Acceleration, on the direction of, 



458. 

 Actinium emanation, on the trans- 

 formation of the, 201. 

 Adams (Prof. E. P.) on electro- 



striction, 889. 

 Air, on the coefficient of absorption 

 by, of the beta rajs from radium 

 0, 8 ; on the production of nuclei 

 in, by intense cooling, 5(33. 

 Airey (J. R.), tables of Neumann 



functions, 658. 

 Alpha particles, on the probability 

 variations in distribution of, 198; 

 on the ranges of the, from various 

 radioactive substances, 613. 



• rays, on the emission of electrons 



from metals under the influence of, 

 907 ; m 

 Aluminium phosphate, on the posi- 

 tive ionization from, 698 ; on the 

 mobility of positive ions from 

 heated, 791. 

 Aiitonoff (Gr. N.) on the disintegra- 

 tion products of uranium, 419. 

 Arnold (H. D.) on Stokes's law for 

 the motion of spheres through 

 liquids, 755. 

 Atmosphere, on the amount of the 

 radioactive products present in 

 the, 821. 

 Atomic volume, on the relation 

 between the, and the spectra of 

 elements, 922. 

 Barkla (Prof. C. G.) on the spectra 

 of the fluorescent Rontgen radia- 

 tions, 396. 

 Barus (Prof. C.) on elliptic and 

 other interference with reflecting 

 gratings, 118. 

 Batschinski (A.) on the equation 

 of continuity of the liquid and 

 gaseous states of matter. 221. 



Becker (G. F.) on some new mechan- 

 ical quadratures, 342. 



Berkeley (the Earl of) on a thermo- 

 statf or controlling the temperature 

 of a room, 211. 



Berry (G. H.) on the pianoforte 

 bridges, 113. 



Beryllium, on the positive ionization 

 from salts of, 669. 



Beta particles, on the relative number 

 of ions produced by the, from the 

 various radioactive substances, 

 604. 



rays, on the coefficient of ab- 

 sorption by air of the, from radium 

 C, 8 ; on the number of ions pro- 

 duced by the, from radium 0, 

 551. 



Bitilar suspensions, on increased ac- 

 curacy in the use of, 433. 



Bois (Prof. H. du) on polarization 

 of undiffracted long-waved heat 

 rings by wire gratings, 322. 



Boltwood (Prof. B. B.) on the pro- 

 duction of helium by radium, 

 586. 



Books, new : — U.S. Coast and Geo- 

 detic Survey, 219, 355; Bulletin 

 of the Bureau of Standards, 354 ; 

 Fleming's Principles of Electric 

 Wave Telegraphy and Telephony, 

 463; Gesammeite Abhandlungen 

 von Friedrich Kohlrausch, 819 ; 

 Walker's Outlines of the Theory 

 of Electromagnetism, 819 ; Whit- 

 taker's History of the Theories of 

 iEther and Electricity, 951. 

 Boyle (Dr. R. W.) on the solubility 



of radium emanation, 840. 

 Bragg (Prof. W. IT.) on the mode 



of ionization by X-rays, 222. 

 Bridges, on the pianoforte, 113. 

 Bumstead (Prof. II. A.) on the 

 emission of electrons by metals 

 under the influence of alpha rays, 

 907. 



