GENERAL INDEX. 
129 
measured potentials and currents, Sir 
W. Thomson and J. T. Bottomley on the 
illuminating powers of, 1881, 559 
Electric lamps, incandescent, a new re- 
liector for, Prof. F. Clowes on, 1883, 447 
--- launches, A. Reckenzaun on, 1883, 
650 ; J. Clark on, 652 
-launches on the Thames, G. Forbes 
on, 1889, 741 
-light, Dr. Miller on photographic 
spectra of the, 1861, 87 
--light, S. Highley on a cheap form of 
automatic regulator for the, 1864, 13 , 
*191 
--light, an improved lantern for lec¬ 
ture demonstrations with, W. Ladd on, 
1870, 26 
* -light engineering, Dr. Fleming on, 
1882, 667 
* -light for lighthouses, the value of 
quadriform gaslights in comparison 
with the, J. R. Wigham on, 1881, 779 
* -light, magneto-, Capt. Abney on, 
photometric measurements of the, 1876, 
3 6 
-—— light measurement, some apparatus 
for use in connection with, R. Sabine 
on, 1882, 667 
-- light applied to night navigation 
upon the Suez Canal, R. P. Sellon on, 
1888, 814 
-light, the, precautions to be adopted 
when supplied by means of trans¬ 
formers, K. Hedges on, 1889, 740 
-light, as a means of attracting 
marine animals, Prof. W. A. Herdman 
on the, 1889, 633 
- lighting, tne present state of, J. 
N. Shoolbred on, 1878, 706 
-lighting, advances in, J. N. Shool¬ 
bred on recent, 1879, 503 
-lighting as applied to coal mines, 
A. Jamieson on, 1881, 778 
■ -lighting in America, Prof. G. Forbes 
on, 1888, 813 
-lighting at Cannock Chase collieries, 
by A. Sopwith, 1886, 814 
■ -- lighting, distribution of electricity 
by transformers and alternate current 
machines for, C. H. W. Biggs and W. H. 
Snell on, 1887, 87 S 
-lighting, domestic, W. H. Preece on, 
*1884, 893 ; 1885, 1197 
- lighting, fire risks of, Iv. Hedges on, 
1883, 663 
* -lighting and fire insurance rules, 
W. Hartnell on, 1890, 958 
- lighting at the Forth Bridge works, 
J. N. Shoolbred on, 1885, 879 
-lighting and the law, Dr. L. Ed¬ 
munds on, 1885, 1195 
-lighting, &c., underground con¬ 
ductors for, Prof. G. Forbes on, 1887, 
S75 
^Electric lights, incandescent, the rela¬ 
tive value of, J. N. Shoolbred on, 1881, 
780 
- machine, dynamo-magneto-, W. 
Ladd on a further development of the, 
1868, 19 
—— machines, Sir W. Thomson on, 
founded on induction and convection, 
1867, 18 
* -meter, a new, Sir W. Thomson on, 
1890, 956 
-meters, C. V. Boys on, 1882, 464 
- motor phenomenon, W. M. Mordey 
on an, 1886, 544 
* - organs in elasmobranch fishes, 
Prof. J. C. Ewart on the modifications 
of, 1889, 627 
* -railway, the Portrush, Dr. A. 
Traill on, 1884, 893 
-railways, recent progress in, Dr. 
J. A. Fleming on, 1882, 667 
- resistance of the human body, Dr. 
W. H. Stone on Mance’s method for 
eliminating the effects of polarisation 
to determine the, 1885, 900 
- resistance of hydrated salts, Dr. E. 
Wiedemann on the, 1887, 346 
-- resistance balance constructed by 
Prof. W. Thomson, Fleeming Jenkin 
on an, 1864, 14 
- resistance of magnetite. Prof. S. P. 
Thompson on the, 1886, 314 
-resistance of metals at high tem¬ 
peratures, description of experiments 
for determining, by J. T. Bottomley, 
1886, 548 
-safety lamp for miners, J. W. Swan 
on an, 1885, 1196 
-- safety lamps, J. W. Swan on im¬ 
provements in, 1886, 496 
-safety lamps for miners, N. Watts 
on, 1888, 816 
-spark, J. Dewar on the temperature 
of the, 1872, 51 
-time-signal at Port Elizabeth, S. A. 
Yarley on the, 1870, 27 
* -torpedoes, 0. Rowland on, 1865, 191 
t- tramway, the Blackpool, M. H.. 
Smith on, 1886, 810 
-tramway, the Lineff, G. Kapp on, 
1890, 956 
- tramways, M. Holroyd Smith on„. 
1883, 652 ; *1884, 893 
Electrical action varies inversely as the 
square of the distance, the proof by 
Cavendish’s method that, Prof. J. H.. 
Poynting on, 1886, 523 
* -apparatus, a screw-gauge for, W. 
H. Preece on, 1881, 779 
- behaviour of semipermeable mem¬ 
branes, Prof. Ostwald on the, 1890, 331 
.-capacity of a certain condenser, and! 
on the value of V, C. Hockin on the,. 
1879, 285 
K 
