Nature, "1 

 April 14, 1931J 



Index 



IX 



Dyson (Sir Frank W.), elected an Honorary Member of 

 the American Astronomical Society, 220 ; Relativity and 

 the Eclipse Observations of May, 1919, 786 



Ealand (C. A.), Animal Ingenuity of To-day, 660 ; The 



Kumance of the Microscope, 627 

 East tl'rof. E. M.), Increase of f-'opuJation — a Warning, 

 133;, and Dr. D. K. Jones, Inbreeding and Outbreed- 

 ing ; Their Genetic and Sociological i>ignificance, 335 

 East (K. R.), Tl)e British Association, 113 

 Ebcll (M.), Tempel's Comet, 91 

 Eccle? (Prof. W. H.), Progress of Research on the 



Thermionic-valve Tube, 447 

 Eddington (Prof. A. S.), Radiation Pressure Near the 

 Sun, 59 ; Relativity, 644 ; Space, Time, and Gravita- 

 tion : An Outiine of the General Relativity Theory, 

 822; The British Association, 2U ; The Internal Con- 

 stitution of the Stars, 14 ; The Relativity of Time, 802 

 Edge (S. F.), Farm Tractors, 422 

 Edmonds (II. H.), Course Angle Tables for Finding a 



Course Made Good, 548 

 Edmonds (W.), and .Miss S. Edmonds, Foundation of a 



Prize in Ophthalmology, 649 

 Edridgc-Grcen (Dr. F. W.), The Prevention of Myopia, 550; 



The Stereoscopic Appearance of Ceriain Pictures, 375 

 Edwards (F. W.), Habit of Ccraiopoginje of Sucking the 

 Juices of other Insects, 250 ; The British Species of 

 Uixiniu, 575 

 Einstein (Prof. A.), A Brief Outline of the Development of 

 the Theory of Relativity, 782 ; Translated by Dr. 

 R. W. Lawson, Relativity : The Special and the 

 General Theory, 336 

 Ellington (Air Vice-.Vlarshal E. I,.), Aircraft Research and 



Contemplated Developments, 259 

 Ellis (A. J.), The Divining Rod, 87 

 Elmhirst (R.), Leptocephalus of Conger in the Firth of 



Clyde, 441 

 Elton (P. M.), Output in the Weaving-sheds of Silk Mills, 



385 

 Kmanurlli (Prof. P.), The First Voyage Round the VVorld, 



8i6; The Planet Mars, 743 

 Emmet (Dr. W. L. R.), awarded the Elliott Cresson Gold 



Medal of the Franklin Institute, 606 

 Ijiglednw (F. L.), Inheritance of Lateral Florets and 

 Rarhilla in Barley ; Length of Glume and Grain in 

 a Hybrid Wheat, 158 

 d'Erasmo (G.), Miocene Ichthyolites from Syracuse, 395 

 Ernie (Lord), Agriculture during Two Great Wars, 33 

 Esdaile (Dr. Philippa C), appointed University Reader in 

 Biolugy in the Houscho'd and Social Science Depart- 

 ment of King's College for Women, 712 

 i;vans (Dr. L B. Pole), The Veld : Its Resources and 



Dangers, 388 

 r.van<i (f^r. J. W.), Research at the Universilies, 391 ; 

 The British Association, 146 : The Origin of the Alkali 

 Rocks. 421; ; Dr. H. Lvster Jameson, and Major A. G. 

 Church, The British A<!sociation, 373 

 Kvc (Tuitire), Brunner, Mond, and Co. 's Gift for Scientific 



Education .ind Research, 414 

 Evershed (J.). Investigation of the Einstein Spectral Shift, 

 701; : The Shift of the Fraunhofer Lines in the Solar 

 System . 357 

 Ewintr (Sir J. A.), Ewing's " TTiermodynamics," 242 ; 



Thermndynamirx for Engineers, 7a 

 Exner (Prof. F. M.>. and Prof. J. Hann, The Central 

 Meicorologli • ' '".-odynamic Institute, Vienna, 619 



f abrc (J. IL), translated by A. T. de Matfos, The Glow- 

 worm and other Beetles, 463 



I'.ibry (Prof. C). elected .-in Honor.iry Member of the 

 Royal tnHlitution, 478 



I'.ibry (L.), The Use of Geocentric I„-ititudes for F.icilitnt- 

 ing the Identification of the Minor Planets, 746 



lagan (C. E), Impending Retirement of, 638; [death], 

 736: fobituary arlicle], 766 



K.igc (A.), Airscrews in Theory and Experiment, ^92 



l-nirgrieve, and others, Historical Geography, 645" 



1 illaize (E. N.) A Scheme for the Classification of the 

 Subject-matter of Anthropology, 738 



1-uiio (G.), Surlaces of the Fourth Order, with Infinite 

 Discontinuous Groups of Birational Transtormaiions, 

 i., 490 

 Fanthaui ^^'rol. H. B.), Observations on Parasitic Protozoa 



found in South Africa, 389 

 I-'armer (frol. J. Jj.), appointed a .Member of the Advisory 

 Council to the Coiniiiniee of the Privy Council for 

 Scienutic and industrial Research, 55; Some Biological 

 Aspects of Uisease, 449 

 Farrant (K.)^ tobituaryj, 736 

 l-arrer (k. J.), [obtuary article], 413 

 Fauvel (Prol. P.), Marine Annelids collected in the Abrolhos 



Islanus, 48b 

 Fav6 (L.), Curves Designed for the Determination of Ortho- 

 drome Routes, 850 

 Fawcett (Prof. E.), Presidential Address to the Spele- 

 ological Socieiy of the Univers.ty of Bristol, 26 

 Fawcett (F.), Heredity and Acquired Characters, 693 

 Fawcett (Col. P. H.), to Further E.xplore Western Brazil, 



45° 

 Federici (E.), Campaign against Anopheles Larva by 



Aquatic Insects, li., iii., 619 

 Ferguson (E. W.), and G. K. Hill, Notes on Australian 



Tabanida;, 651 

 Ferguson (Capt. H. S.), [obituary], 701 

 Ferri6 (G.), R. Jouaust, R. Mesny, and A. Perot, Studies 



in Radio-goniometry, 746 

 Fcytaud (J.), Destruction of Ants by Chloropicrin, 135 

 Field (S.), The Commercial Electrolysis of Zinc Sulphate 

 Solutions, 520; The Deposition of Gold-silver Alloys, 

 521; The Electrolytic Method of Extracting Zinc, 3C9 

 Filon (Prof. L. N. G.), The British Association, 145 

 Findlay (Prof. J. J.), An Introduction to Sociology: For 



Social Workers and General Readers, 497 

 Firth (Miss E. M.), F. W. Hodkin, and Dr. W. E S. 



Turner, Properties of Raw Fireclays, 90 

 Fischer (H. E.), The Nitrogen Industry' 634 

 Fishenden (Mrs. M. W.). The Coal Fire, 536 

 Fisher (H. A. L.), The Cost of Education, 230; The 

 Government Offer of a Site for the University of 

 London, 166 ; The Place of the Universities in a 

 National System of Education, 580 

 FitzSimons (F. W.), A Rare Example of Melanism, 830; 

 The Natur;il History of South Africa. Mammals. In 

 4 vols. Vols. iii. and iv., 600 

 Flajolpt (M.), Perturbations of the Magnetic Declination at 



Lyons in iqiq and 1920, 231 

 Fletcher (A. E.) [obituary article], 181; 

 Fletcher (F.). The Public Schools in a National System of 



Education. 580 

 Fletcher (J. J.). The .Society's Heritage from the Maclcays 

 VrZ,"^?! Centenary Address to the Linnean Society of 

 N.S.W.). 67 ' 



Fletcher (Sir Lazarus) fobituary article], 636 



Fleure (Prof. H. J). The Welsh Physical Tvne ^i6 



Fleury (P.), The Catalytic Decomposition of .ili'Alkaline 

 Solution of Sodium Hypobromitc bv Copper Sulphate 

 490 ' "^ ' 



Fl»xner (S.). Encenh.ilitis and Poliomvelilis 167 



Flint (W. VX and F. R. Mnllorh, ' The 'European Corn 

 Borer and some .Similar Insects, yy-^ 



Floud yF. C. I..} annointed Perm.nneiit Secretary of the 

 Ministry of Agriculture, 288 



Flynn (Prof. T. T). Soualodont Rcm.iins from the Tertiary 

 Strata of Tasmania, 406 



F06 (A.). Fxrreiory System of the Silkworm. 100 



Forcrand (R. dp). The Meltinn-.point of Heptane and the 

 Law of Aliernnt'on of Melting-points. 746 



Fors^n (L.), The Systematic Nomenclature and Constitu- 

 tion of the Derivatives of Molybdic Acid 818 



Forster (Dr. M. O.). Emil Fischer's Corltributions to 

 Organic Chemistry, 326 



Forluyn {M. B. D.), Verglrichende Anatomic des Nerven- 

 systems. Er«ier Teil., Pi.. Leiuingsbahnen im Nerven- 

 nystem der Wirbelloscn Tiere, 176 



Fosse (R.). The Mcro Chemical Qualitative Analysis of 

 Cyanic Acid. 363 ; The Synthesis of a Second DIamlde, 

 Oxamide, by the Oxidation of Sugar and Ammonia, 

 99; The Synthesis of Cyanic Acid by the Oxidation 

 of Formamide and of Oxamic Acid, 779 



Foster (Sir Gregory), University Grants, 8 



Foster (O. E.), (iifi to the University of 'Buffalo 230 



