INDEX. 
Bumstead (Dr. H. A.) on the varia- 
tion of entropy as treated by Prof. 
Willard Gibbs, 8. 
Burbury (S. H.) on the kinetic 
theory of gases, 467. 
Burrard (Major S. G.) on deflexions 
of the plumb-line in India, 292. 
Cadmium, analysis of the bright. 
lines in the spectrum of, 500. 
Canal rays, on the relation of the 
electric charges transported by, to 
the exciting current, 180. 
Capacities, on the measurement of 
small, 586. iad 
Capacity, on the effect of, at the ends 
of a circular resonator, 652. 
Cathode rays, on the relation of the 
electric charges transported by, to 
the exciting current, 180, 
Cavitation, on the occurrence of, in 
lubrication, 329. 
Chant (C. A.) on the variation of 
potential along the transmitting 
oe in wireless telegraphy, 
124. 
Chartres (R.), note on 7, 315. 
Chree (Dr. C.) on the bending of 
magnetometer deflexion-bars, 39; 
on the whirling and transverse 
vibrations of rotating shafts, 504. 
Circuits, comparison of the periods 
of the electrical vibrations asso- 
ciated with simple, 635. 
Close (J.C.) on the effect of capacity _ 
at the ends of a circular resonator, 
652. 
Conduction currents in metals, on 
the number of electrons conveying 
the, 151. 
Conductometer, on the, 281. 
Conics, on an instrument for draw- 
ing, 274, 608. 
Contact difference of potential, on 
the theory of, 435. 
Cotter (J. R.) on an instrument for 
drawing conics, 274, 608. 
Crémieu-Pender discovery, on the, 
405. 
Darwin (H.) on an electric thermo- 
stat, 408. 
Davison (Dr. C.) on the Derby earth- 
quakes of 1903, 416. 
Dielectric capacity of atoms, on the, 
02. 
constant of water at low tem- 
peratures, on the, 655. 
Diffraction, on some new cases of, 376. 

717 
Diffusion in solution of dissociated 
gases, on the, 266. 
Double refraction in matter moving 
through the ether, on, 317. 
Electric capacities, on the compari- 
son of, 362; on the measurement 
of small, 586. 
charges, on the relation of the, 
transported by cathode and canal 
rays to the exciting current, 180; 
on ions, on the, 276. 
—— conductivity, on a new instru- 
ment for the comparison of, 281 ; 
on the theory of, 423 ; of solutions, 
on the, 469. 
current, on the radiation from 
an alternating circular, 356; ona 
hot-wire ammeter for the measure- 
ment of small alternating, 595. 
field, on the motion of radium 
in the, 303. 
inductance, on a standard of 
small, 586. 
origin of rigidity, on the, 417. 
— thermostat, on an, 408. 
vibrations associated with sim- 
pie circuits, comparison of the 
periods of the, 635. 
Electrical qualities of metals, on 
relations between the optical and, 
157. 
Electricity, on the effect of the 
passage of, through a mixture of 
oxygen and hydrogen at low 
pressures, 225. 






Electrons, on the number of, con- 
veying the conduction currents in 
metals, 151. 
English (Lt.-Col. T.) on Eocene 
formations surrounding the Dar- 
danelles, 414. 
Entropy, on the variation of, 8. 
Everett (Prof. J. D.) on Borgnet’s 
method of dividing an angle in an 
arbitrary ratio, 75. 
Fisher (Rey. O.) on deflexions of 
the plumb-line in India, 14. 
Fitzgerald-Lorentz hypothesis, on 
the, 621. 
Fleming (Prof. J. A.) onthe measure- 
ment of small inductances and 
capacities, 586; on a hot-wire 
ammeter for the measurement of 
small alternating currents, 595. 
Francis (Dr. W.), obituary notice of, 
515. 
Gases, on the effect of temperature on 
