﻿[ 844 ] 



INDEX to VOL. XXIX. 



Absorption spectra of organic 



substances, on the, 192. 



iEolian tones, on, 433. 



Air, on the nature of the large ions 

 in the, 514 ; on a new type of ion 

 in the, 636 ; on the measurement 

 of the Telocity of, by the linear 

 hot-wire anemometer, 556. 



Alkali metals, on the principal 

 series in the spectra of the, 775. 



Allen (Dr. H. S.) on the magnetic 

 field of an atom in relation to 

 theories of spectral series, 40 ; on 

 the series spectrum of hydrogen 

 and the structure of the atom, 140 ; 

 on an atomic model with a mag- 

 netic core, 714. 



Alpha particles, on the Telocity of 

 the, from radium A, 259 ; on 

 tracks of the. in photographic 

 films, 420. 



rays, on the photographic 



action "of, 836. 



Anemometer, on measurement of 

 air Telocity bv the linear hot-wire, 

 556. 



Atomic heat, on the photoelectric 

 constant and, 734. 



model with a magnetic core, 



on an, 714. 



Atoms, on the magnetic field of, in 

 relation to theories of spectral 

 series, 40 ; and molecules, on the 

 gyroscopic theory of, 310; on the 

 series spectrum, of hvdrogen and 

 the structure of, 140, 332, 651; 

 on the construction of cubic crys- 

 tals with theoretical, 750. 



Baly (Prof. E. C. O.) on light 

 absorption and fluorescence, 223. 



Barlow (W.) on topic parameters 

 and morphotropic relationships, 

 745. 



Berkeley (the Earl of) on a new 

 form of sulphuric acid drying- 

 vessel, 609 ; on a sensitive method 

 for examining the optical qualities 

 of glass plates, 613. 



Beta rays, on the absorption of homo- 

 geneous, 725 ; on the photographic 

 action of, 836. 



Bohr (Dr. X.) on the series spectrum 

 of hTdrogen and the structure of 

 the atom, 332. 



Boiling-points of homologous com- 

 pounds, on the, 599. 



Books, new : — Kippax's The Call of 

 the Stars, 206 ; Silberstein's The 

 Theory of Relativity, 335 ; Scud- 

 der's The Electrical Conductivity 

 and Ionization Constants of Or- 

 ganic Compounds, 432 ; Bulletin 

 of the Bureau of Standards, 624. 



Bragg (Prof. W. H.) on the relation 

 between certain X-ray Avave- 

 lengths and their absorption co- 

 efficients, 407. 



Burton (Dr. C. Y.) on the scattering 

 and regular reflexion of light by 

 gas molecules, 625. 



Butterworth (S.) on the coefficients 

 of self and mutual induction of 

 coils, 578. 



Calcite, on the X-ray spectrum of, 

 407. 



Campbell (Dr. X.) on the ionization 

 of metals by cathode rays, 369 ; 

 on ionization by positive rays, 783. 



Carbon filaments, on the thermionic 

 emission from, 362. 



Cathode raTs, on the ionization of 

 metals by, 369. 



Coils, on the coefficients of self and 

 mutual induction of coaxial, 578. 



Condensation nuclei produced by the 

 action of lisfht on iodine Tapour, 

 on, 413. 



Conduction, on the electron theorv 

 of metallic, 173, 425. 



Contact difference of potential of 

 distilled metals, on the, 623. 



Crehore (Dr. A. C.) on the gyroscopic 

 theory of atoms and molecules, 

 310 ; on the construction of cubic 

 crystals with theoretical atoms, 

 750. 



Critical temperatures of homologous 

 compounds, on the, 599. 



Crystals, on the construction of cubic, 

 with theoretical atoms, 750. 



Derivative of a function, note on the 

 higher, 823. 



