GENERAL INDEX. 
193 
Harcourt (A. G. Vernon) on chemical 
research, 1876, 314 
-- *on a new unit of light for photo¬ 
metry, 1877, 31 ; on the application of 
a new unit of light to the examination 
of coal-gas, 51 
-on colour tests for the estimation of 
sulphur and phosphorus in iron or steel, 
1879, 303 ; on the illuminative value 
of a mixture of hydrogen with some 
hydrocarbons, 319 
- on fixing a standard of white light, 
1882, 38 ; 1883, 127 ; 1886, 61 ; 1886, 
39 ; 1887,47 5 1888, 39 
- the aerorthometer, an instrument 
for correcting the measure of a gas, 
1882, 499 
-on a lamp giving a constant light, 
1883,426 
- on chemical nomenclature, 1884, 39 ; 
1885, 262 
* -on an example of chemical equili¬ 
brium, 1884, 671 
- photometry with the pentane 
standard, 1885, 916 
- on the desirability of combined action 
for the translation of foreign memoirs, 
1887, 41 ; on the promotion of the study 
of geography, 158 
-on a standard lamp, 1887, 617 
- on the present methods of teaching 
chemistry , 1888, 73 ; 1889, 228 ; 1890, 
265 
* -and F. W. Fison on a continuous 
process for purifying coal-gas and ob¬ 
taining sulphur and ammonium sulp¬ 
hate, 1873, 64 
-(L. F. Vernon) on the erosion of the 
sea-coasts of England and Wales, 1884, 
238 ; 1885, 404 ; 1886, 847 ; 1888, 898 
- (Rev. W. V.) on scientific evidence 
in courts of law, 1862, 373 ; 1866, 
456 
-on the solvent treatment of uric-acid 
calculus, and the quantitative deter¬ 
mination of uric acid in urine, 1869, 
122 
—— the late Rev. W. Vernon, Prof. Stokes 
on the researches of, on the optical pro¬ 
perties of glass, 1871, 38 
Hardcastle (F.), the classification of 
the exports of cotton piece goods in 
Board of Trade returns, 1887, 847 
Harden (Dr. A.) and W. W. H. Gee on 
stereomerr 3 r , 1889, 516 
Harding (W. D.) on the drainage of the 
fens of Cambridgeshire, Huntingdon¬ 
shire, Norfolk, and Suffolk, 1868, 166 
- on the treatment and utilisation of 
sewage, 1869, 313 
Hardman (E. T.) on some new localities 
for Upper Boulder-Clav in Ireland, 
1874, 76 ; on the geological structure 
of the Tyrone coal-fields, 77 ; on the 
age and formation of Lough Neagh, 
Ireland, 79 
Hardman (E. T.) on the exploration of 
the Fermanagh caves, 1878, 183 
-on lead and platinised lead as a sub¬ 
stitute for carbon and platinised silver 
in Leclanche, bichromate, and Smee’s 
batteries, 1878, 453 ; on the influence 
of ‘ strike ’ on the physical features of 
Ireland, 541 ; on Hullite, a hitherto 
undescribed mineral: with notes on 
the microscopic appearances, by Prof. 
E. Hull, 542 
-on the geology of the newly dis¬ 
covered goldfields in Kimberley, 
Western Australia, 1886, 645 ; on the 
discovery of JDiprotodon Australis in 
tropical Western Australia (Kimberley 
district), 671 ; notes on natives of the 
Kimberley district, Western Australia, 
835 
Hardness of metals, an apparatus for 
determining the, T. Turner on, 1886, 554 
-a coefficient of abrasion as an abso¬ 
lute measure of, F. T. Trouton on, 1890, 
757 
*Hardy (R. W.), speculations on physical 
astronomy, 1864, 6 
-(T.) on the migration of birds, 1882, 
283 
^Hargreaves (J.) on the separation 
from iron-furnace cinder of phosphoric 
acid for manurial purposes, 1870, 60 
Harker (Alfred) on slaty cleavage and 
allied roch-structures, with special re¬ 
ference to the mechanical theories of 
their origin, 1885, 813 
-(Allen), report on the occupation of 
the table at the zoological station at 
Naples, 1881, 182 
- on the zoocytium or gelatinous 
matrix of Ophrydium versatile , 1885, 
1074 ; *on the coloration of the anterior 
segments in the Maldanidae, 1098 
-on a luminous oligochrete, 1887, 767 
* -(J. A.) and Prof. H. B. Dixon on 
the action of light on dry hydrogen 
and chlorine, 1889, 541 
-and Prof. H. B. Dixon on the rate 
of explosion of hydrogen and chlorine 
in the dry and moist states, 1890, 77 b 
-and P. J. Hartog on an apparatus 
for the determination of freezing-points 
of solutions, 1890, 779 
Harkness (Prof. R.) on the Old Red 
Sandstone of South Perthshire. 1861, 
114 ; on the sandstones and their asso¬ 
ciated deposits of the valley of the 
Eden and the Cumberland plain, 115 
-on the Skiddaw slate series, 1862, 72 
-on the fossils of the Skiddaw slates, 
1863, 69 ; on the reptiliferous and foot¬ 
print sandstones of the N.E. of Scot¬ 
land, ib. ; on the hornblendic green- 
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