GENERAL INDEX. 
135 
rides, by Prof. Gladstone and A. Tribe, 
1874, 58 
Electrolytic separation of metal at the 
free surface of a salt in solution, Dr. J. 
Gubkin on, 1890, 138 
Electro-magnetic action of moving elec¬ 
tricity, Maxwell’s equations for the, 
Prof. G. F. FitzGerald on, 1883, 404 
-anemometer, a new, and the mode 
of using it in registering the velocity 
and pressure of the wind, J. J. Hall on, 
1870, 35 
--disturbances of comparatively short 
wave-lengths, a method of producing, 
Prof. G. F. FitzGerald on, 1883, 405 
f-experiment, Hon. J. W. Strutt on 
an, 1869, 46 
-forces, kinetic stability of equili¬ 
brium with, Prof. G. F. FitzGerald on 
a, 1890, 753 
*--- gyroscope, W. de Fonvielle on an, 
1880, 500 
--induction of incomplete circuits, a 
simple hypothesis for, with consequent 
equations of electric motion in fixed 
homogeneous or heterogeneous solid 
matter, Prof. Sir W. Thomson on, 1888, 
567 
-instead of electrostatic, induction 
in cable-signalling, G. R. Winter on the 
use of, 1872, 52 
- unit, a new determination of the 
number of electrostatic units in the, by 
Profs. W. E. Ayrton and J. Perry, 1878, 
487 
- unit, the number of electrostatic 
units in the, R. Shida on, 1880, 497 
* -units of resistance and of electro¬ 
motive force, suggestions for a redeter¬ 
mination of the absolute, by Prof. G. 
C. Foster, 1874, 30 
* -waves, a modification of Max¬ 
well’s equations of, Prof. H. A. Row¬ 
land on, 1888,617 
-waves, measurement of the length 
of, Prof. O. J. Lodge on the, 1888, 567 
Electro-magnetism, mechanical power of, 
James Croll on the, 1862, 24 
*Electro-magnets, sparkless, Prof. S. P. 
Thompson on, 1889, 515 
Electro-metallurgy, dynamos for, Prof. 
G. Forbes on, 1886, 815 
Electrometer at Kew, Prof. W. Thomson 
on the result of reductions of curves 
obtained from the self-recording, 1863, 
2 7 
* -a new absolute, Prof. Sir W. Thom¬ 
son on, 1870, 26 
-- the absolute sine, Prof. G. M. 
Minchin on, 1881, 558 
* -Prof. J. Dewar on a new form of, 
1876, 42 
* -a new form of trapdoor, Prof. W. 
F. Barrett on, 1878, 495 
Electrometer, a new, J. Brown on, and 
some preliminary experiments on vol¬ 
taic action, 1881, 562 
* - key, a new, Dr. O. J. Lodge on, 
1879, 258 
—— work, report of the committee on 
devising and constructing an improved 
form of high insulation key for , 1880, 29 
Electrometers and electrostatic measure¬ 
ments, report on, bu Sir W. Thomson, 
1867, 489 
-Sir W. Thomson on a series of, for 
comparative measurements through 
great range, 1867, 16 
^Electrometric determination of Y, by 
Profs. Sir W. Thomson, Ayrton, and 
Perry, 1888, 616 
Electromotive engine, G. M. Guy on, 1862, 
2 7 
-engine, VV. Ladd on an, 1863, 19 
-force of a single cell, Prof. Sir W. 
Thomson on the application of the 
cen ti-ampere or the deci-ampere balance 
for the measurement of the, 1887, 610 
-force produced by an abrupt varia¬ 
tion of temperature at the point of 
contact of two portions of the same 
metal, Prof. H. Stroud on the, 1889, 504 
- forces, the seat of the, in the voltaic 
cell, Prof. O. J. Lodge on, 1884, 464 
Electro-motors, improvements in, T. 
Wiesendanger on, 1880, 501 
Electro-optic action of a charged Frank¬ 
lin’s plate, Dr. J. Kerr on, 1885, 930 
Electro-optics, report on researches on, 
1890, 144 
Electro registering apparatus, a new 
form of, D. Lane on, 1878, 454 
Electrostatic accumulator, Sir W. Thom¬ 
son on a self-acting (water-dropping), 
1867, 16 
-action of a moving or varying charge, 
the failure of metal sheets to screen off 
the, Prof. O. J. Lodge on, 1889, 510 
-forces, the, between conductors and 
other matters in connection with elec¬ 
tric radiation, Prof. O. J. Lodge on, 
1890, 754 
-units in the electro-magnetic unit, 
a new determination of the number of, 
by Profs. W. E. Ayrton and J. Perry, 
1878, 487 
-units, the number of, in the electro¬ 
magnetic unit, R. Shida on, 1880, 497 
Elementary bodies, R. Schenk on the 
amount of heat required to raise, from 
absolute zero to their state of fusion, 
1872, 82 
-Education Bill, the, and Mechanics’ 
Institutions, E. Renals on, 1870, 200 
^Elements, the constitution of the, Prof. 
J. Dewar on, 1884, 672 
* -decomposition of the, Prof. J. 
Dewar on the alleged, 1881, 589 
