INDEX. 
Deacon (G. F.) on underground tempera- 
ture, 45. 
Deaf and dumb, the number of the, in the 
world, W. E. A. Axon on, 616. 
Deane (Dr.) on the erratic blocks of Eng- 
land, Wales, and Ireland, 136. 
De Chaumont (Prof.) on the influence of 
bodily exercise on the elimination of 
nitrogen, 242. 
Delany (Rev. W.) on the workings of the 
proposed revised New Code, and of 
other legislation affecting the teaching 
of science in elementary schools, 309. 
De Rance (C. E.) on the erratic blocks of 
England, Wales, and Ireland, 136; on 
the circulation of underground waters, 
147; on local scientific societies, 318; 
notes on geological sections within 
forty miles radius of Southport, 489. 
Dewar (Prof.) on fixing a standard of 
white light, 127 ; *on liquid marsh gas, 
464; *on critical points and pressures 
and their relation to atomic volumes, 
ib. 
and Prof. Liveing on sun-spots and 
the chemical elements in the sun, 455. 
— and Dr. A. Scott onthe atomic weight 
of manganese, 459; on the molecular 
weights of the substituted ammonias, 
460 
Diazo group, colouring matters of the, 
by R. Meldola, 455 
Dickinson (J.) on underground tempera- 
ture, 45. 
Didymium chloride, the absorption spec- 
trum of, Prof. A. Schuster and T. G. 
Bailey on, 400 
Diffusion, rapid, of molten metals, a case 
of, Prof. W. C. Roberts on, 402. 
Jiller (J. 8) on the geology of the 
* Troad, 508. 
Dixon (H. B.) on chemical nomenclature, 
_"127; *explosion of carbonic acid gas— 
a demonstration, 459. 
*Dog-whelk, the egg-capsules of the, and 
their contents, Dr. W. Bb. Carpenter on, 
540. 
Dredging machines, two new, Prof, M. 
Marshall on, 540. 
Duncan (W. S.), a new method of com- 
paring the forms of skulls, 570. 
Dyas versus Permian, by Rey. A. Irving, 
503. 
Dynamical problem, a geometrical illus- 
tration of a, Prof. R. 8. Ball on, 407. 
Dynamics of non-Euclidian space, a 
fundamental theorem in the, Prof. R. 
S. Ball on, 406. 
Dynamometer, a flexible band, by Prof. 
W. C. Unwin, 656. 
Earthquake of 1881 in the island of 
Ischia, preliminary notice of the, by 
H. J. Johnston-Lavis, 499. 
665. 
Earthquake of July 1883 in the island of 
Ischia, preliminary notice of the, by 
H. J. Johnston-Lavis, 501. 
Earthquake phenomena of Japan, report 
on the, 211. 
Eclipse totale du 6 Mai, 1883, 41’Ile Caro- 
line (long. 152° 20’ ouest, Paris, lat. 10°” 
sud), Océan Pacifique, note sur les- 
résultats de ses observations de 1’, by 
Dr. J. Janssen, 429. 
Economic Science and Statistics, Ad-- 
dress by R. H. Inglis Palgrave to the- 
Section of, 605. 
Education of artisans, Dr. G. B. Barron 
on the, 627. 
Education of pauper children, the, in-- 
dustrially and otherwise, by Rey. J. O. 
Bevan, 629. 
Electric currents, alternating, the energy 
lost by radiation from, Prof. Fitzgerald 
on, 404. 
Electric lamps, incandescent, a new re- 
flector for, by Prof. F. Clowes, 447. 
Electric launches, A. Reckenzaun on, 650. . 
, J Clark on, 652. 
Electric lighting, fire risks of, by K. 
Hedges, 563. 
Electric tramways, M. H. Smith on, 652. 
Electrical measurements, report of the 
Committee for constructing and issuing 
practical standards for use in, 41. 
*Electrical resistance of the human body, 
Dr. W. H. Stone on the, 544. 
Electrolysis of dilute sulphuric acid in 
secondary batteries, by Dr. J. H. Glad- 
stone and A. Tribe, 464. 
Electro-magnetic action of moving elec- 
tricity, Maxwell’s equations for the,. 
Prof. Fitzgerald on, 404. 
Electro-magnetic disturbances of com- 
paratively short wave-lengths, amethod : 
of producing, Prof. Fitzgerald on, 405... 
Elimination of nitrogen, the influence of * 
bodily exercise on the, report on, 242. 
Ellington (E. B.) on the supply of hy- 
draulic power, 646. 
Energy lost by radiation fromalternating 
electric currents, Prof. Fitzgerald on 
the, 404. 
English-speaking populations of the 
world, the, by Hyde Clarke, 618. 
Eozoon canadense, the geological rela- 
tions and mode of preservation of, 
Principal J. W. Dawson on, 494. 
*Equations of motion, the, and the 
boundary conditions for viscous fluids, . 
Prof. O. Reynolds on, 401. 
Erratic blocks of England, Wales, and 
Ireland, eleventh report on the, 136. 
Etheridge (R.) on the earthquake pheno- 
mena of Japan, 211; on the fossil 
phyllopoda of the palzozoic rocks, 215. 
Euphrates Valley railway, J. B. Fell on. 
the, 632. 
