144 
GENERAL INDEX. 
Ewing (Prof. J. A.) on the advisability 
and possibility of establishing in other 
parts of tiie country observations upon 
the prevalence of earth tremors similar 
to those now being made in Durham, 
1888, 522 
- on magnetic viscosity in iron, 1889, 
497 ; on hysteresis in the relation of 
strain to stress, 502 
-on the molecular theory of induced 
magnetism, 1890, 740 
-—— and W. Low on the magnetisation of 
iron in strong fields, 1887, 586 ; on the 
magnetisation of Hadfield’s manganese 
steel in strong fields, 587 ; on the in¬ 
fluence of a plane of transverse section 
on the magnetic permeability of an iron 
bar, 609 
- [J. A.] and J. G. MacGregor on 
the volumes of solutions, 1877, 40 
Examination, the statistics of, Prof. F. Y. 
Edgeworth on, 1888, 763 
Examinations, the element of chance in, 
Prof. F. Y. Edgeworth on, 1890, 920 
*-competitive, D. Mackintosh on the 
prevailing mode of preparing for, 1875, 
217 
Examiners, degree of concordance be¬ 
tween different , in assigning marks for 
physical qualifications, experiments at 
EtonCollege on the, by A. A. Somerville, 
1889, 477 
Exchange, media of: some notes on the 
precious metals and their equivalents, 
by J. B. Martin, 1884, 837 
Exchanges, the theory of, report on, by 
Balfour Stewart, 1861, 97 
Excreta of towns, E. C. C. Stanford on a 
chemical method of treating the, 1869, 
76 
Excretion of nitrogen by the skin, J. B. 
Power on the, 1878, 602 
- of nitrogen, the influence of bodily 
exercise on the, report on, 1880, 159 ; 
1882, 269 ; 1883, 242 ; 1884, 265 
Exeter, H. K. Bamber on the water-supply 
of, 1869, 60 
Exmouth Warren, G-. Peacock on the en¬ 
croachments of the sea on, 1869, 166 
Exocoetus (Hying-fish), Dr. C. Collingwood 
on the habits of the, 1867, 80 
^Expansion of solids by heat, two new 
forms of apparatus for the experi¬ 
mental illustration of the, by Prof. 
W. F. Barrett, 1876, 48 
Expansions, W. H. L. Bussell on symbo¬ 
lical, 1864, 4 
Expansive working in direct-acting 
pumping engines, H. Davey on, 1887, 
880 
Experimental science, exercises illustra¬ 
tive of an elementary course of instruc¬ 
tion in by Prof. Armstrong. 1890, 299 
Exploring expeditions now and fifty years 
ago, F. Galton on the equipment of, 
1881, 738 
Explosion, the velocity of, of a mixture 
of carbonic oxide and oxygen with 
varving Quantities of aqueous vapour, 
H. B. Dixon on, 1882, 487 ; 1884, 688 
-of hydrogen and oxygen, the rate 
of, H. B. Dixon on. 1885, 905 
Explosions in British coal-mines during 
the year 1859, report on, by Thomas 
Dobson, 1861, 236 
-- steam-boiler, Lavington E. Fletcher 
on the unsatisfactory character of 
coroners’ inquests consequent on, 1868, 
190 
■- boiler, report of the committee ap¬ 
pointed to consider and report how far 
coroners' 1 inquisitions are satisfactory 
tribunals for the investigation of, 1869, 
47 
- steam-boiler, report on the various 
plans proposed for legislating on the- 
subject of, with a view to their preven¬ 
tion, 1870, 1 ; 1871, 166 ; 1872, 57 
-L. E. Fletcher on steam-boiler 
legislation, 1871. 236 
-- in gases, the velocity of, H. B. 
Dixon on, 1884, 688 
-the incompleteness of combustion 
in, by Prof. H. B. Dixon and H. W. 
Smith, 1888, 632 
-spectroscopic studies of, by Profs. 
Liveing and Dewar, 1884, 672 
"‘Explosive agents, recent researches in, 
F. A. Abel on. 1879, 293 
Exponential functions, Prof. F. W. 
Newman on the calculation of, 1874, 19 
Export trade of the United Kingdom, 
the decay in the, S. Bourne on, 1879, 470 
Export and import duties , the incidence 
and effects of, by C. F. Bastable, 1889, 
440 
Eye, Isaac Ashe on the function of the 
oblique muscles of the, 1862, 120 
--Barnard S. Proctor on the focal 
adjustment of the, 1863, 16 
- A. Claudet on some phenomena 
produced by the refractive power of 
the, 1863, 11 
-—- Dr. Edwards Crisp on the relative 
weight and form of the, in vertebrate 
animals. 1868, 114 
Eyepiece for certain optical experiments. 
Prof. G. Forbes on a diagonal, 187S, 
449 
Eyes of animals, Prof. H. Muller on the 
existence and arrangement of the fovea 
centralis re tinge in the, 1861, 171 
-Prof. H. N. Moseley on the presence 
of, and other sense organs in the 
Chitonidge, 1884, 780 
‘-petrified human,’ from the graves 
of the dead, Arica, Peru, Rev. Dr. Hume 
on the so-called, 1869, 133 
