4 
INDEX. 
Cole (Rev. E. M.) on the Duggleby 
* Howe,’ 979. 
Collins (W. H.) on the condition of the 
air in public places of amusement, with 
special reference to theatre hygiene, 
773. 
Collins (Dr. W. J.), contributions to a 
knowledge of the human lens, espe- 
cially in reference to the changes it 
undergoes with age and in cataract, 
855. : 
Colour vision, defective, Lord Rayleigh 
on, 728. 
Column-printing telegraph, by F. Hig- 
gins, 959. 
*Combustion of gases under pressure, 
experiments on the, by Profs. Liveing 
and Dewar, 776. 
Commercial geography of Africa, the, 
by J. S. Keltie, 892. 
Compensation of  alternating-current 
voltmeters, the, by J. Swinburne, 753. 
Competition, some aspects of, Prof. A. 
Marshall’s Address to the Section of 
Economic Science and Statistics, 898. 
Consumption of wealth, a theory of the, 
by Prof. P. Geddes, 924. 
Contact electricity, an illustration of, 
presented by the multicellular electro- 
meter, Sir W. Thomson on, 728. 
Co-operators, the ulterior aims of, by B. 
Jones, 916. 
Copper, the specific resistance of, T. C. 
Fitzpatrick on, 120. 
Copper potassium chloride and itsaqueous 
solutions, the behaviour of, at different 
temperatures, by J. H. van ’t Hoff, 
776. 
Cordeaux (J.) on making a digest of the 
observations on the migration of birds, 
464. 
Corresponding Societies Committee, re- 
port of the, 55. 
Country lying between Lakes Nyassa, 
Rukwa, and Tanganyika, Dr. K. Cross 
on the, 891. 
Crawford (Dr. J.), human footprints in 
recent volcanic mud in Nicaragua, 812; 
on the geology of Nicaragua, 7d. 
Creak (Commr.) on the best means of 
comparing and reducing magnetic ob- 
servations, 172. 
Cretaceous mammals of North America, 
Prof. O. C. Marsh on the, 853. 
Cretaceous polyzoa, report on the, 378. 
*Crook (H. T.) the present state of the 
Ordnance Survey and the paramount 
necessity for a thorough revision, 896. 
Crookes (W.) on electrolysis in its phy- 
sical and chemical bearings, 138. 
Cross (C. F.), A. G. Green, and E. J. 
Bevan, the action of light upon the 
diazo-compounds of primuline and 
dehydrothiotoluidine: a method of 
989 
photographic dyeing and printing, 
781. \ 
Cross (Dr. K.) on the country lying 
between Lakes Nyassa, Rukwa, and 
Tanganyika, 891. 
Crosskey (Dr. H. W.) on the erratic 
blocks of England, Wales, and Ireland, 
340; on the circulation of underground 
waters, 352; on the teaching of science 
in elementary schools, 489. 
*Cryptogamic flora and invertebrate flora 
of the fresh waters of the British Isles, 
report on the, 853. 
Culverwell (E. P.), possibility of irrever- 
sible molecular motions, 744. 
Cundall (J. T.) on the influence of the 
silent discharge of electricity on oxygen 
and other gases, 338. 
Cunningham (Lieut.-Col. A.), chess pro- 
blem, 745. 
Cunningham (D.) on arranging an inves- 
tigation of the seasonal variations of 
temperature in lakes, rivers, and es- 
tuaries, 92. 
Cure of infectious disease, indications 
for the, by E. H. Hankin, 856. 
Cynosurus eristatus (crested dog’s-tail- 
grass), an overlooked variety of, by W. 
Wilson, jun., 872. 
Cystidea, the anatomy and morphology 
of the, notes on, by Dr. P. H. Carpenter, 
821. 
Dagger (J. H. J.) on aluminium bronze 
for artillery and small arms, 948. 
Dakyns (J. R.) on the changes of the 
Lower Carboniferous rocks in York- 
shire, from south to north, 811. 
Darwin (Prof. G. H.) on the best means 
of comparing and reducing magnetic 
observations, 172. 
Davis (J. W.) on an ancient sea-beach 
near Bridlington Quay, 375 ; on the pre- 
historic inhabitants of the British 
Islands, 548; on fossil fish of the West 
Riding coalfield, 822. 
Dawkins (Prof. W. Boyd) on the work of 
the Corresponding Societies Committee, 
55; on the erratic blocks of England, 
Wales, and Ireland, 340; on the col- 
lection, preservation, and systematic 
registration of photographs of geologi- 
cal interest in the United Kingdom, 
429; on the prehistoric inhabitants of 
the British Islands, 548. 
Dawson (Dr.G. M.) on the North-western 
tribes of the Dominion of Canada, 553. 
Deacon (G. F.) on the investigation of 
the action of waves and currents on the 
beds and foreshores of estuaries by 
means of working models, 512. 
Deep-sea tow-net, for opening and 
closing under water, report of the 
