Nature, 

 September 29, 192 



.] 



Index 



XI 



Dubrisay (R-), The Action of Boric Acid on Glycerol and 



the Polyvalent Alcohols, 670 

 Dufrenoy (J.), Influence of the Temperature of the Thermal 



Waters of Luchon on their Flora, 159 

 Dufton (A. F.), Sources and Links, 522 

 Dugan (R. S.), U cephei, 373 

 Duncan (R. D.), " Wired Radio," 87 

 Dunkerly (J. S.), Physiological Reactions in the Protozoa, 



395 ; The Reparation Act and Scientific Research, 427 

 Dunkley (W. G.), A Primer of Trigonometry for Engineers : 



with numerous Worked Practical Examples, 134 

 Dunlop (G. A.), appointed Keeper of the Warrington 



Museum, 85 

 Dunoyer (L.), A New Spectrum of Caesium, 831 

 Dupont (G.J, The Acid Constituents of the Exudation of the 



Maritime Pine, 447, 542 ; The Study of the Acid Con- 

 stituents of the Resinous Exudation from the Pine, 319 

 Dupuy (E. "L.), The Influence of Welding on the Resistivity 



of Iron, 670 

 Durand (J. F.), The Decomposition of Metallic Alcoholates 



and Phenates by Heat, 607 

 Durell (C. V.), Modern Geometry : The Straight Line and 



Circle, 616 

 Durrant (R. G.), Sound Transmitted through Earth, 140 

 Durward (J.), Diurnal Variation in Wind Velocity and 



Direction at various heights, 693 

 Duthie (Miss Georgina May), appointed a Demonstrator in 



Anatomy in Manchester University, 507 

 Du Toit (A.' L.), Geology of Pondoland, 827 

 Dyson (Sir F. W.), Solar Eclipse Results and the Principle 



of Relativity, 682 ; Stellar Parallax, 527 



Ealand (C. A.), Insect Life, 806 



Easterfield (Prof. T. H.), Work of the Staff of the 

 Cawthron Institute, 668 



Eastwood (G. S.), and J. R. Fielden, An Algebra for Engin- 

 eering Students, 616 



Ebell (M.), Reid's Comet, 247 ; The Orbit of Comet Pons- 

 Winnecke, 345 



Eckersley (T, L.), Errors in the Apparent Bearings of Radio 

 Stations, 502 



Eddington (Prof. A. S.), A Difficulty in Einstein's Gravita- 

 tional Theory, 170; A Generalisation of Weyl's Theory 

 of the Electromagnetic and Gravitational Fields, 125 ; 

 elected President of the Royal Astronomical Society, 51 ; 

 " Space " or " ^ther," 201 



Eden (Dr. G.), appointed Assistant Lecturer on Clinical 

 Medicine and Junior Medical Tutor in Birmingham 

 University, 90 



Edie (F. S.), appointed Professor of Biochemistry in the 

 University of Cape Town, 572 



Edridge-Green (Dr. F. W.), New Facts of Colour Vision, 

 826 ; The Effect of Red Fatigue on the White Equation, 

 509 ; The Theory of Vision, 361 ; V. Z, Cope, and Prof. 

 T. Swale Vincent, appointed Arris and Gale Lecturers 

 at the Royal College of Surgeons of England, 507 



Edwards (Prof. C. A.), The Physico-Chemical Properties of 

 Steel. Second edition, 772 



Einstein (Prof. A.), elected a Foreign Member of the Royal 

 Society, 342 ; The Development and Present Position of 

 the Theory of Relativity, 504 ; The Relation between 

 Geometry and Physics, 504 ; The Degree of D.Sc. con- 

 ferred upon, by Manchester University, 504 



Elderton (W. Palin), American and British Superannuation 

 Systems, 651, 683 



Elles (Dr. Gertrude L.), The Bala Country : Its Structure 

 and Rock-succession, 158 



Elliott (C), " Halo-blight " of Oats, 155 



Ellis (C. D.), The Magnetic Spectra of the j8-rays excited 

 by the -y^rays, 444 



Ellis (Dr. D.), Advances in the Study of the Yeasts, 387 



Ellis (Havelock), Impressions and Comments. Second series, 

 1914-20, 743 



Elmhirst (R.), and Dr. J. H. Paul, Distribution of Copper 

 in the Blood and " Liver " of the Decapod Crustacea, 



151 

 Emerson (B. K.), The Geology of Massachusetts and Rhode 



Island, 631 

 Emmons (W. H.), The Enrichment of Ore Deposits, 581 



Engledow (F. L.), The Problem of Increasing the Yield of 



Cereal Crops by Plant Breeding, 509 

 Errera (Leo), Recueil de I'lnstitut Botanique, tome iv., 5 

 Erskine-Murray (Dr. J.), A New Acoustical Phenomenon, 



490 

 Euler (Prof. H.), and Prof. P. Lindner, Chemie der Hete 



und der alkoholischen Garung, 485 

 Evans (Dr. I. B. Pole), The Flowering Plants of South 



Africa. Vol i.. No. i, 40 

 Evans (Dr. J. W.), American and British Superannuation 



Systems, 683 ; Co-operative Indexing of Periodical 



Literature, 550; Falconer's The Geology of the Plateau 



Tin Fields, 679 ; Mineralogy for Students, 646 ; The 



Employment of Water-power in the Development of the 



Mineral Industry, 596 

 Eve (Prof. A. S.), lonisation Potential and the Size of the 



Atom, 552 

 Everest (Dr. A. E.), and A. J. Hall, Anthocyanins and 



Anthocyanidins, part iv., 61 

 Evermann (Prof. B. W.), The Alaskan Salmon Fisheries, 



219 

 Ewart (Prof. A. J.), elected President of the Royal Society 



of Victoria, 435 ; Work done in Botany and Geology 



during the War Period, 441 

 Ewing (Sir J. A.), S'eam and Thermodynamic Theory, 



482 ; The Atomic Process in Ferro-magnetic Induction, 



444 ; The Mechanical Production of Cold. Second 



edition, 103 



Fabre (J. H.), Insect Adventures, 101 



Fabry (Prof. C), presented with the Franklin Medal and 



Honorary Membership of the Franklin Institute, 369 

 Faes (H.), and M. Staehelin, The resistance of the Adult 



Cockchafer to Low and High Temperatures, 703 

 Fage (L.), Shore Fishes, 796; Some Spiders without Pul- 

 monary Sacs, 159 

 Fairbairn (Miss Ruth), appointed Lecturer in Histology in 



Manchester University, 380 

 Fairgrieve (M. M'C), The Annual Incidence of Intelligence 



and its Measurement by the American Army Tests, 606 

 Fajans (Prof. K.), Radioaktivitat und die neueste 



Entwicklung der Lehre von den chemischen Elementen. 



Dritte auflage, 583 

 Falconer (Dr. J. D.), The Geology of the Plateau Tin Fields, 



679 

 Fanfani (Rev. E.), A Simplified Calendar Reform, 88 

 Farabee (Dr. W. C), Ancient American Gold Objects in 



the Museum of the University of Pennsylvania, 85 

 Farmer (Dr. R. C), Rt. Hon. Lord Moulton of Bank, 82 

 Farrand (Dr. L.), acceptance of the Presidency of Cornell 



University, 732 

 Fenton (Dr. E. G.), Physiography and Glacial Geology of 



Southern Patagonia, 828 

 Feret (R.), The Law of Equilibrium of Solid Grains in a 



Vertical Ascending Current of Water, 158 

 Ferguson (Dr. A.), Studies in Capillarity. Part i., 477 ; 



and P. E. Dowson, part ii., 477 

 Ferguson (E. W.), Revision of the Amycterides (Coleoptera). 



Part vi., Acantholophus, 479 

 Fernald (Prof. C. H.) [obituary], 114 

 Ferris (Gen.), awarded the Osiris Prize, 629 

 F^ry (C), A Battery Depolarised by Air, 30 

 Field (Dr. H. H.) [obituary], 242 

 Field (S.), The Electrolytic Recovery of Zinc, 252 

 Finch (Prof. J. K.), Topographic Maps and Sketch Mapping, 



294 

 Findlay (Prof. A.), and V. H. Williams, The Electrolytic 



Reduction of Glucose, 252 

 Fisher (Dr. H. L.), Laboratory Manual of Organic 



Chemistry, 519 

 Fisher (S.) [obituary], 213 

 Flajolet (M.), The Strong Magnetic Perturbation of May 



i4-i5> 192 1, M2 

 Fleck (Dr. A.), The Exploitation of Irish Peat, 779 

 Fleming (Prof. J. A.), awarded the Albert Medal of the 



Royal Society of Arts, 490 ; presented wfth the Albert 



Medal of the Royal Society of Arts, 562 ; Wireless 



Telephony, 369 



