INDEX. 



713 



Flett (Dr. J. S.) on ash from the 

 eruption of St. Vincent, 171. 



Fortnightly tide, on the theory of 

 the, 136. 



Fourier's theorem, applications of, 

 to the analysis of irregular curves, 

 238. 



Free vibrations of systems affected 

 with small rotatory terms, 293. 



Freezing-points, boiling-points, and 

 solubilities, on the connexion 

 between, 405. 



Garwood (Prof. E. J.) on the origin 

 of hanging valleys, 173. 



Gaseous ion, on the charge of elec- 

 tricity carried by a, 346. 



Gases, on reversed lines in the 

 spectra of, 153, 524 : on the con- 

 ductivity produced in, by ultra- 

 violet light, 389; on the kinetic 

 theory of, 597 ; on secondary 

 radiation from, subject to X-rays, 

 685. 



Gas-thermometer, on the thermo- 

 dynamical correction of the, 48. 



Geological Society, proceedings of 

 the, 170, 384. 



Glazebrook (Dr. E. T.), theoretical 

 optics since 1840, 537. 



" Good Seeing," on, 674. 



H lines of the solar spectrum, on the 

 constitution of the, 524. 



Heat, on the influence of radiation 

 on the transmission of, 243 ; on 

 the, evolved on contact of liquid 

 with finely-divided solid, 595. 



Hitchcock (F. L.) on vector differ- 

 entials, 187. 



Hodgkins gold medal, award of, 176. 



Honda (K.) on the Wiedemann effect 

 in ferromagnetic substances, 650. 



Hydrogen, on the spectra of, 153. 



Hysteresis loss in iron, on the effect 

 of temperature on the, 117. 



Inductances, on the measurement of 

 small, 493. 



Inertia, on an oscillating table for 

 determining moments of, 648. 



Inglis (J. K. H.) on the theory of 

 the aluminium anode, 301. 



Integration, on the use of countour, 

 in the problem of diffraction by a 

 wedge, 374. 



Ionization produced by the corpuscles 

 given out by radium, on the 

 specific, 550, 698, 



Ions, on the charge carried by 

 gaseous, 346; on the charge on 

 the, produced in air by Rontgen 

 rays, 429. 



Iron, on the effect of temperature on 

 the hysteresis loss in, 117. 



Jeans (J. H.) on the kinetic theory 

 of gases, 597. 



K lines of the solar spectrum, on the 

 constitution of the, 524. 



Kelvin (Lord), animal thermostat, 

 198. 



Kinetic theory of gases, on the, 

 597. 



Landolt-Bornstein, Physikalisch - 

 chemischen Tabellen, 176. 



Langley (Prof. S. P.) on "good 

 seeing," 674. 



Lehfeldt (R. A.) on a potentiometer 

 for thermocouple measurements, 

 668 ; on a resistance comparator, 

 672. 



Light, on the connexion between, 

 and chemical energy &c, 208 ; on 

 screens transparent only to ultra- 

 violet, 257 ; resolution of, into 

 undulations of flat wavelets applied 

 to the investigation of optical 

 phenomena, 264 ; on the con- 

 ductivity produced in gases by 

 ultra-violet, 389. 



Liquid, on the vibrations of a rect- 

 angular sheet of rotating, 297 ; on 

 the heat evolved on contact of 

 a, with a finely divided solid, 

 595. 



Liquid film formed by condensation 

 at the surface of a 

 thickness of the, 517. 



Loaded lines in telephonic trans- 

 mission, on, 313. 



Lownds (Dr. L.) on the thermo- 

 magnetic properties of ciystalline 

 bismuth, 141. 



MacAlister (D. A.) on tin and tour- 

 maline, 386. 



McLennan (Prof. J. C.) on induced 

 radioactivity excited in air at the 

 foot of waterfalls, 419 ; on the 

 electrical conductivity of atmo- 

 spheric air, 699. 



Magnetic deviation of the easily 

 absorbed ravs from radium, on the. 

 177. 



dichroism, on, 487. 



double refraction, on, 486. 



