770 
INDEX. 
Bury (H.) on the River Wey, 579. 
Campbell (A.) on the use of variable 
mutual inductances, loo. 
Canal-ray group, on the, 372. 
Coils, on the coefficients of mutual 
induction of coaxial, 332. 
Comstock (Dr. D. F.) on the relation 
of mass to energy, 1. 
Dewey (H.) on pillow -lava near 
Port Isaac, 576. 
Dickson (J. D. H.) on the Joule- 
Kelvin inversion temperature, 126. 
Dispersion, on the anomalous mag- 
netic rotatory, of neodymium, 270 ; 
of rare earths, 538. 
Dyeing, on the theory of, 499. 
Elastic properties of steel, effect 
of combined stresses on the, 214. 
Electric charge of the active deposit 
of actinium, on the, 737. 
fields, on the distribution in, 
of the active deposits of radium, 
thorium, and actinium, 601. 
Electron, on the electromagnetic 
mass of the, 316. 
Electron theory of matter, on the, 
172. 
Electrons, on the existence of positive, 
in the sodium atom, 274 ; fre- 
quencies of the free vibrations of 
quasi-permanent systems of, 438. 
Elements, on the evolution and 
devolution of the, 21, 396. 
Elias (G. J.) on the anomalous 
magnetic rotatory dispersion of 
rare earths, 538. 
Elsden (J. V.) on the St. David's- 
Head rock-series, 578. 
Energy, the relation of mass to, 1. 
Equipotentials, on a freehand graphic 
way of determiniug, 237. 
Erbium, on the anomalous magnetic 
rotatory dispersion of, 538. 
Eve (Prof. A. S.) on changes in 
velocity in an electric field of the 
a, 0, and secondary rays, 720. 
Fabry and Perot's apparatus, notes 
on, 548. 
Focometry of a concave lens, on the, 
198, 300. 
Gamma rays, on the, of radium, 638 ; 
on the nature of the, 663. 
Gaseous nebula, on the problem of a 
spherical, 687. 
Gases, on the mixing of, 297, 768 ; 
on molecular aggregations pro- 
duced in, by sudden cooling, 746. 
Geiger (Dr. II.) on the irregularities 
in the radiation from radioactive 
bodies, 539. 
Geological Society, proceedings of 
the," 201, 572. 
Glass, on figuring, by hydrofluoric 
acid, 555. 
Goldstein (Prof. E.) on the canal- 
ray group, 372. 
Grating, on the effect of the position 
of the, on the resolving power of 
a spectroscope, 762. 
Hamilton's principle, on, 677. 
Hancock (Prof. E. L.) on the effect 
of combined stresses on the elastic 
properties of steel, 214. 
Havelock (Dr. T. H.) on certain 
Bessel integrals and the coefficients 
of mutual induction of coaxial 
coils, 332. 
Helium, wave-lengths of, 549. 
Helix, on the curvature and torsion 
of a, on any cylinder, 55. 
Hill (W.) on a deep channel of drift 
at Hitchin, 573. 
Honda (K.) on the secondary 
undulations of oceanic tides, 88. 
Houstoun (Dr. R. A.) on a new 
spectrophotometer, 282. 
Howchin (Rev. "W.) on beds of 
Cambrian age in S. Australia, 202. 
Hughes (A. LI.) on molecular aggre- 
gations produced in gases by 
sudden cooling, 746. 
Hydrogen, on the electrochemical 
equivalent of, 614. 
Iliffe (J. D.) on beds of Cambrian 
age in S. Australia, 203. 
Inductances, on the use of variable 
mutual, 155. 
Induction, on the mutual, of coaxial 
coils, 332 ; on mutual, 364. 
Ingersoll (L. R.) on phenomena 
exhibited by small particles on a 
Nernst glower, 205. 
Interpolation, on inverse, by means 
of a reversed series, 628. 
Inversion temperature, on the Joule- 
Kelvin, 126. 
Isitani (D.) on the secondary undula- 
tions of oceanic tides, 88. 
Isomorphisms, on the groups of, 
of the groups whose degree is less 
than eight, 223. 
Jessup (A. C. and A. E.) on the 
evolution and devolution of the 
elements, 21. 
