866 
DENNING (Dr. A. D.) on the viscosity of 
colloidal iron hydrate, 476. 
—— magnetic double refraction of col- 
loidal iron hydrate, 477. 
DE RANCH (C. E.) on the erratic blocks 
of the British Isles, 237. 
Descending thalamus tracts, Dr. W. P. 
May on, 760. 
Development of towns, the, by T. C. 
Horsfall, 660. 
DEWAR (Prof. Sir J.) on wave-length 
tables of the spectra of the elements and 
compounds, 66. 
Ls on new low-temperature pheno- 
mena and their scientific applications, 
531. 
DICKINSON (J.) on underground tempera- 
ture, 51. 
DIETERICI (Prof. C.) on the energy of 
water and steam at high temperatures, 
513. 
DIETZEL (Prof. H.), free trade and the 
labour market, 653. 
*Diffraction process of colour photo- 
graphy, recent improvements in the, 
by Prof. R. W. Wood, 464. 
DINES (W. H.) on the investigation of the 
upper atmosphere by means of kites, 
ie 
{Diptera for hymenoptera, the mimetic 
resemblance of, by Prof. E. B. Poulton, 
607. 
Discussions : 
On JV-rays, 467. 
*On units used in meteorological 
measurement, 469. 
*On the radio-activity of ordinary 
matter, 471. 
On the nature and origin of earth 
movements, 550. 
*On physical deterioration and anthro- 
pometric survey, 705. 
On oxidation and functional activity, 
742. 
Ov conduction and structure in the 
nerve-are and nerve-cell, 751. 
On school-leaving certificates, 845 
On the training of teachers and the 
local education authorities, 849. 
On methods of imparting manual 
instruction in schools, 855. 
*Divergent series, the use of, in astro- 
nomy, Z. U. Ahmad on, 464. 
DIVERS (Prof. E.) on the study of hydro- 
aromatic substances, 60. 
*Drxon (Prof. A. C.) on the Schwarzian 
derivative, 464. 
Dixon (Prof. A. F.) on anthropometric 
investigation in Great Britain and 
treland, 330. 
Drxon (Prof. H. B.) on underground 
temperature, 51. 
*_.__ on the specific heats of gases at 
high temperatures, 514, 676. 
REPORT—1904. 
Dixon (Dr. W. E.), the effect of alcohol 
on the heart, 742. 
Dolichoglossus, a new species of, W. M. 
Tattersall on, 603. 
Don (John), a correlation between the 
electric conductivity of air and the 
variation of barometric pressure, 469. 
Don and Dearne valleys, the glaciation 
of the, by Rev. W. L. Carter, 565. 
DONCASTER (L.) and Rev. G. H. RAYNOR 
on experiments on heredity and sex- 
determination in Abraxas grossu- 
lariata, 594. 
DoNNAN (F. G.), a suggested explanation 
of the phenomena of opualescence ob- 
served in the neighbourhood of critical 
states, 504. 
Drift in the Valley of the Stour, a great 
depth of, W. Whitaker on, 543. 
DuckwortH (W. L. H.) on the brain of 
a foetal gorilla, 715. 
—— graphical representation of the 
various racial human types, 718. 
DUNSTAN (Prof.) on cotton-growing in 
the Empire, 657. 
*DURAND (Dr. H. J.) on the development 
of the Geoglossacee, 826. 
DWERRYHOUSE (A. R.) on the movements 
of underground waters of North-west 
Yorkshire, 225. 
on the erratic blocks of the British 
Isles, 237. 
on the fossiliferous drift deposits at 
Kirmington, Lincolnshire, §c., 272. 
Dymonp (T. 8.) and G. CLARKE, the 
determination of the availability of 
insoluble phosphate in manures, 805. 
——, F. HUGHES, and C. JUPE, the in- 
fluence of sulphates as manure upon 
the yield and feeding-value of crops, 
807. 
Dynamic isomerism, by Dr. 1. M. Lowry, 
193. 
*Dynamic isomerism of a- and 8-crotonic 
acids, R. 8. Morrell and E. K. Hanson 
on the, 512. 
Earth movements, the effects of, on 
rocks, by J. J. H. Teall, 551. 
—— the nature and origin of, discussion 
on, 550. 
—— in the North-West Highlands, Dr. J. 
Horne on the, 550. 
—— near Naples, the effects of, R. T. 
Giinther on, 634. 
Ecology, the problems of, Prof. A. G. 
Tansley on, 797. 
Economic importance of the family, the, 
by Mrs. Bosanquet, 655. 
Economic Science and Statistics, Address 
to the Section of, by Prof. W. Smart, 
639. 
