Nature, "1 

 October 7, IQ20_ 



Index 



XI 



Dixon (Prof. R. B.), A New Theory of Polynesian Origins, 



763 



Dixon (Prof. W. E.), Practical Pharmacology, 420 



Debbie (Sir James J.), re-elected President of the Chemical 

 Society, 145; and J. J. Fox, The Absorption of Light 

 by Elements in the State of Vapour, 538 



Poidge (Miss Ethel M.), The Haustoria of the Genera 

 Meliola and Irene, 667 



Hollo (Prof. L.), elected a Foreign Member of the Linnean 

 Society, 366 



Dnmville-Fife (Lieut. C. W.), Submarine Warfare of To- 

 day, 36 



Pcincaster (Prof. L.), -An Introduction to the Study of 

 Cytology, 190 ; Genetic Studies of Drosophila, 405 ; 

 [death], 431 ; [obituary article], 461 ; Resolution of the 

 Senate of Liverpool University on the Death of, 472 



Hi odson, Carey, and Baldwin, The Theoretical Determina- 

 tion of the Longitudinal Seiches of Lake Geneva, 275 



Hoiiglas (Capt. C. K. M.), Clouds as seen from an Aero- 

 plane, 218; Temperature Variations at 10,000 ft., 614 



Hi^uglass (Prof.), The Annual Rings of Trees in Relation to 

 Climate and Solar Activity, 562 



Dowd (Mary T.) and Jean D. Jameson, Food : its Composi- 

 tion and Preparation, 99 



Downing (Prof. E. R.), A Field and Laboratory Guide in 

 Physical Nature -study, 675 



Dowsett (H. M.), Wireless Telegraphy and Telephony : 

 First Principles, Present Practice, and Testing, 483 



Drach (J.), The Spiral Compensator and New Problems of 

 the Mechanics of Regulation, 443 



Dreaper (W. P.), Notes on Chemical Research : An Account 

 of Certain Conditions which apply to Original In- 

 vestigation, Second edition, 773 



(G. A.), The Spermatophores of Octopus amencana, 

 279 



Drummond (Dr. J. C), appointed Reader in Physiological 

 Chemistry at University College, London, 6q8 



Dryer (C. R.), " Mackinder's ' World Island ' and its 

 American ' Satellite ', " 624 



Drysdale (J. W. W.), [obituary], 590 



Pubois (G.), The Discovery of a Fossil-bearing Layer in 

 the Flanders Clay at Watten (Nord). 7Q<^ 



Pubrisay (R.). Application of a New Method of Physico- 

 chemical Analysis to the Study of Double Salts, 634 



Duckworth (Dr. W. L. H.), Presentation to, 704 



Duerden (Prof. J. E.), A Stalked Parapineal Vesicle in the 

 Ostrich, 516: Ostrich Study in South Africa, 106; The 

 Plumage Bill and Bird Protection, 263 



Duffield (W. G.), T. H. Burnham. and A. A. Davis, The 

 Pressure upon the Poles of Metallic Arcs, including 

 Alloys and Composite Arcs, 121 



Dufraisse (C), The Stereo-isomeric Forms of Benzoyl- 

 phenvlacetvlene Di-iodide, 47^ 



Dufton (A. F.'), A New Apparatus for Drawing Conic 

 Curves, 187; A New Methit>d for Approximate Evalua- 

 tion of Definite Integrals between Finite Limits, 354, 



Duly ("S. J.). The Natural Wealth of Britain : Its Origin 



and Exploitation, i;79 

 Dunkeriy (J. S.), British and Foreign Scientific Apparatus, 



Dunn (J. P.), appointed a Lecturer in the Department of 



Music of the University of Edinburgh. 517 

 Dunoyer (L.\ Magnetic Induction in the Soft Iron Compass 



Correctors under the Influence of the Needles, .t;39 

 Durrant (R. G.), Calculation of Vapour Densities, 742 

 Dutcher (R. A.). The Nature and Function of the Anti- 



neuritic Vitamine. 667 

 Dvmes (T. A."), The Nature Study of Plants in Theory and 



Practice for the Hobby Botanist, 804 



Eastman (G.), Gift to the University of Rochester, N.Y., 

 601 



Eccles (Prof. W. H.). Wireless Telephony, ^19 



Eckersley (Capt. P. P.), The Application of Duplex Wire- 

 less Telephony to Aircraft, i,i;4 



Eclair-Heath (Principal C. L.), Continuation Schools and 

 their Relation to Technical Institutes and Colleges, 728 



Eddington (Prof. A. S."), Gravitational Deflection of High- 



speed Particles, 37 ; Presidential Address to Section A 

 of the British Association, 825 ; and others, Einstein's 

 Theory of Relativity, 306 



Edgcumbe (Major K.), elected Chairman of the National 

 Illumination Committee of Crept Britain, 557 



Edgell (Miss), Memory and Conation, 603 



Edgeworth (Lt.-Col. K. E.), Science and the New Army, 

 233 ; Sea and Sky at Sunset, 358 



Edridge-Green (Dr. F. W.), appointed a Special Examiner 

 in Colour Vision and Eyesight by the Board of Trade, 

 654 ; The Physiology of Vision, with special reference 

 to Colour Blindness ; Card Test for Colour Blindness, 

 575 



Edwards (Prof. C. A.), appointed Professor of Metallurgy 

 at University College, Swansea, 665 



Edwards (F. W.), Mosquitoes, 787 



Einstein (Prof.), awarded the Barnard Medal of Columbia 

 University, 590 



Eisig (Prof. H.), [obituary], 50 



Elgie (J. H.), Elgie's Weather Book: For the General 

 Reader, 739 



Elhuff (L.), General Science : First Course, 3:^2 



Elliott (G. F. Scott), The Trade Routes of the British 

 Empire in Africa, 274 



Ellis (Dr. D.), Iron Bacteria, 323 ; Iron Depositing Bac- 

 teria, 727 



Ellis (G. S. M.), Applied Botany, 164 



Ellis (Havelock), The Philosophy of Conflict : and other 

 Essays in War-time, Second Series, 353 



Ellis (T. S.), Mortlakes as a Cause of River-windings, 264 



Enriques (Prof.), Experiments in Breeding Blow-flies, 756 



Entat (M.), The Destructive Effect of Light on Textiles, 

 Dopes, and Rubberised Fabrics, 758 



Escher (Dr. B. G.), Percussion Figures, 171 



Evans (Dr. E. A.), appointed Professor of Physics at Uni- 

 versity College, Swansea, 665 



Evans (I. H. N.), A Rock^ Shelter in the Batu Kurau 

 Parish, Perak, 834 



Evans (Dr. J. W.), Knowledge and Power, 165 ; Scientific 

 Research, 3:58 



Eve (Prof. A. S.), Observation of an Aurora in Montreal 

 on March 5. 337 



Everdingen (Prof. E. van). Aerial Navigation and Meteoro- 

 logy, 637. 776 ; Investigation of the Upper Air, 663 



Evermann (Dr.), The Present Position of the Northern 

 Fur Seal, 623 



Evershed (J.), The Einstein Displacement of Spectral Lines. 

 244; and Mrs., The Prominence Observations of, 340 



Evershed (S.), Permanent Magijets in Theory and Practice, 



4.'^5 

 Ewart (Prof. J. C), The Nestling Feathers of Birds, 250 

 Ewing (Sir Alfred), Molecular Energy in Gases, 472 



F.R.S., Museums and the State, 136 



Fabre (J. H.). Translated by A. T. de Mattos, The Mason 



Wasps, 291 : The Story Book of Birds and Beasts, 651 ; 



The Story Book of Science, 651 

 Failes (Rev. W.). [obituarv], 18 

 Fallaize (E. N.), Dr. R. Munro. 63s.; Suggestions for the 



Classification of the Subj.ect-matter of Anthropology, 



626 ; The Present Condition of the Aborigines of Central 



Australia. 601 

 Fallou (J.), The Expansion caused by Joule's Effect at the 



Contact of Two -Solids, i;o6 

 Farabee (W. C), Form of Puberty Ordeal among the 



Apalaii Indians, 240 ; The Central Arawaks, 159 

 Fargher and Pyman. The Composition of Salvarsan, 185 

 Farmer (G. W.j. A First-year Physics for Junior Technical 



Schools, 229 

 Farrer (R.), awarded the Gill Memorial of the Royal 



Geographical Society, 112 

 Fawcett (W.) and Dr. A. B. Rendle, Flora of Jamaica, Vol. 



iv.. Dicotyledons : Families Leguminosae to CalH- 



trichaceae. 738 

 Fayet (M.), Tempel's Comet, 789 

 Feldman (W. M.), The Principles of Ante-Natal and Post- 



Natal Child Physiology : Pure and Applied, 638 

 Fenton (Dr.) and A. J. Berry, Studies on Cellulose Acetate. 



378 



