Nature, J 
August 11, 1023. 
Name Index ix 

Davids (Prof. Rhys), [obituary article], 58 
Davidson (C.), Amount of the Displacement in Gelatine 
Films shown by Precise Measurements of Stellar 
Photographs, 169 
Davidson (Prof. P. E.), Social Significance of U.S. Army 
Intelligence Tests, 442 
Davies (Dr. A. M.), The Life-Cycle of the Eel in Relation 
to Wegener’s Hypothesis, 496 
Davies (D. C.), Annual Report of the Field Museum of 
atural History, 1921, 544 
Davis (Prof. B.), The Capture of Electrons by Swiftly 
Moving Alpha Particles, 706; and H. M. Terrill, 
The Refraction of X-rays in Calcite, 207 
Davis (R.), Deciphering Charred Documents, 160 
Davis (Prof. W. M.), Drowned Coral Reefs South of Japan, 
555 
Davison (Dr. C.), The Eruption of Sakura-jima in 1914, 
516; The Silent Zone in Explosion Sound-Areas, 117 
Davison (Henry P.), Scholarships, 621, 651 
Davison (Prof. A. W.) and Prof. H. S. van Klooster, 
Laboratory Manual of Physical Chemistry, 665 
Dawe (T. M.), Pasture Grass in Tropical Africa, 198 
Day (Dr. A. L.), presented with the John Scott Medal, 
680 
Dean (W. R.), awarded a Rayleigh Prize in Cambridge 
University, 417 
Dearden (W. H.), elected Hadfield Research Scholar in 
Metallography at Stockholm, 828 
Deeley (R. M.), Atmospherics, 362; The Cause of Anti- 
cyclones, 83, 256, 634; The Viscosity of Liquids, 
4 
Defant (A.), Temperature-radiation from Clouds, 96 
Déjardin (G.), The Critical Velocities of the Electrons in 
Krypton and the Production of the Spectra of this 
Gas, 554; The Ionisation of Mercury Vapour in the 
Presence of Argon, 35 
Delauney (P.), New Researches relating to the Presence 
of Loroglossin in Native Orchids, 451 
Delépine (Prof. G.), elected a foreign correspondent of the 
Geological Society, 716 ; 
Demolon (A.) and P. Boischot, Researches on the Assimi- 
lability of Phosphatic Manures, 488 
Denaeyer (M. E.), The Rocks of Adrar des Iforass and 
Ahaggar, 692 
Denham (H. G.), An Inorganic Chemistry, 180 
Denham (H. J.), A Micrometric Slide Rule, 103 
Denigés (G.), The Rapid Estimation of Magnesium in a 
Single Drop of Sea-water, 35 
Denne (M. T.), An Improved Apparatus for the Production 
of Photomicrographs, 486 
Denning (W. F.), Fireballs in February, 197; Great Fire- 
ball in Northern India on December 28, 372; June 
Meteoric Displays, 785; Meteors of March 17, 479; 
Perseid Meteors in July 1592, 848; The April Meteor 
Shower, 646; The Great Red Spot on Jupiter, 233; 
The Zodiacal Light, 338 
Depéret (C.), The Glaciations of ‘the Valleys of the French 
Pyrenees, and their Relations with the Fluvial 
Terraces, 867 
Desch (Prof. C. H.), The Services of Henry Clifton Sorby 
to Metallurgy, 478 
Devonshire (Duke of), elected High Steward of Cambridge 
University, 449 ' 
Dewar (Sir James), [obituary article], 472; the work of, 
646 ; bequests by, 750 
Diack (F. C.), awarded the Blackwell prize, 864 
Dickson (Prof. L. E.), History of the Theory of Numbers. 
Volk ITs “x1 
Diénert (F.), The Circulation of Water in the Chalk, 347; 
and F. Wandenbulcke, The Estimation of Silica in 
Water, 831 
Dimbleby (Violet), S. English, and Prof. W. E. S. Turner, 
Some Physical Properties of Boric Oxide-containing 
Glasses, 420 
Dine (D. L. van), Impounding Water for Mosquito Control, 
374 
Dines (W. H.), The Cause of Anticyclones, 495; and 
L. H. G. Dines, An Examination of British Upper 
Air Data in the Light of the Norwegian Theory of 
the Structure of the Cyclone, 587 
Dinwiddie (W.), Wave-power Transmission, 417 
Dixey (Dr. F.), Petrographic Survey of Sierra Leone, 410 
Dixon (Prof. H. B.), elected president of the Manchester 
Literary and Philosophical Society, 645 
Dixon (Prof. H. H.) and N. G. Ball, The Structure of the 
Vascular Supply to the Storage Organs of some 
Seedlings, 275 
Dixon (M.) and H. E. Tunnicliffe, The Oxidation of 
reduced Glutathione and other Sulphydryl Com- 
pounds, 274 
Dobson (G. M. B.), Characteristics of the Atmosphere up 
to 200 km., as obtained from Observations of Meteors, 
487 
Dogiel (Prof. A. S.), [death], 437 
Doke (C. M.), The Grammar of the Lamba Language, 
460 
Doubleday (Ida) and W. B. Hardy, The Latent Period in 
Lubrication, 182 
Douglas (Miss A. V.), The Sizes of Particles in certain 
Pelagic Deposits, 794 
Douglas (G. V.), Geological Results of the Shackleton- 
Rowett (Quest) Expedition, 274 
Douslin (H. R.), Recent Explorations at Zimbabwe, 442 
Douvillé (Prof. H.), elected a foreign member of the 
Geological Society, 716 
Dowling (J. J.), The Recording Ultramicrometer: its 
Theory and Applications, 487, 742 
Dowson (V. H. W.), Date Palms of Iraq, 719 
Dreyer (Prof. G.), A New Treatment of Tuberculosis, 853 
Dreyer (Dr. J. L. E.), elected president of the Royal 
Astronomical Society, 232 
Druault (A.), The Diffraction Spectra produced by Round 
Corpuscles irregularly distributed, 103 
Druce (J. G. F.), made a Doctor Rerum Naturalium of 
the Charles University, Prague, 102 
Drumaux (Prof. P.), L’Evidence de la théorie d’Einstein, 
697 
Drumm (J. J.), The Constitution of Catechin. 
831 
Drysdale (C. V.) and S. Butterworth, The Distribution of 
the Magnetic Field and Return Current round a 
Submarine Cable carrying Alternating Current. Pts. 
I. and II., 793 
Duane (Prof. W.), awarded the Comstock prize by the 
U.S. National Academy of Sciences, 716 
Dubois (R.), Tears and the Functions of the Lachrymal 
Gland, 654; The Toxicity of Copper with Respect to 
Moulds, 832 
Duddell (the late W. du B.}, memorial of, 686 
Dufay (J.), The Spectrum of the Nocturnal Sky, 762 
Duffield (Prof. W. G.), A Meteorological Disturbance of an 
Oscillatory Character, 598 
Dugmore (Major A. R.), The Wonderland of Big Game 
Film, 782 
Dumanois (P.), The Utilisation (in a Motor) of a Mixture 
of Lamp Oil and Alcohol containing a High Per- 
centage of the latter, 831; An Aerodynamical 
Arrangement for testing Motors, 383 
Dun (W. S.) and Sir Edgeworth David, The Occurrence 
of Gastrioceras at the Irwin River Coalfield, W.A., 
efc., 312 
Duncan (Dr. D.), [death], 749 
Duncan (J. C.), Photographic Studies of Nebulz, 857 
Dunkerly (J. S.), Encystation and Reserve Food Forma- 
tion in Tvinema lineare, 206 
Dunlap (Prof. K.), The Elements of Scientific Psychology, 
RE PES 
392 
Dunlop (G. A.), Report on the Warrington Museum, 158 
Dunlop (Prof. W. R.), Educational Problems of Tropical 
Agriculture, 880 
Dunoyer (L.), Induction Spectra and Spark Spectra, 588 ; 
and P. Toulon, An Arc Rectifier, 96 
Durand (J. F.), Action of Acetylene on Zinc Ethyl, 654 
Durham (Miss Edith), Balkan Embroidery Patterns, 786; 
“ Bird Men’”’ and Kindred Customs in the Balkans, 
450 
Durrans (T. H.), Factors of Odorous Strength, 359 
Dybowski (J.), A New Industrial Force: the Utilisation 
of the Heat furnished by Thermal Springs, 488 
Dye (D. W.), The Valve-maintained Tuning Fork as a 
Precision Time Standard, 242 
Dyson (Sir Frank), Large Telescopes and their Work, 447 
2 
