Nature, 1 

 April 15, igzoj 



Index 



XIX 



Ungemach (H.). A Remarkable Deposit of Chalcostibite in 



-Morocco, 387 

 Unvvin (Dr. W. C), Develop;nents of Mechanical Science, 



241 ; Results of Notched-bar Tests, 79 



Van der Goot (P.)i The Aphides of Java, 6qS 



Vanderlinden (H.), Observations of Borrelly's Comet, 19191", 



326; Orbit of Comet igigc, 80 

 Van Dyke (K. C), Works Management, 543 

 Vaughan (W. W.), The Importance of Science as Part of 



a Liberal Education, 514 

 Vernon (Dr. H. M.), The Influence of Hours of Work and 



of Ventilation on Output in Tinplate Manufacture, 136 ; 



and others. The Influence of the .Six-hour Day on In- 

 dustrial Efficiency and Fatigue, 519 

 \'(5ronnet (.V.), Time and Temperature of Formation of a 



Star, 367 

 Victorian, Popular Science, 630 

 Vigneron (H.), Les .Applications de la Physique pendant la 



Guerre, 2 

 Villey (J.), Explosion Motors for Rarefied Atmospheres, 6S3 

 Vincent (Prof. T. Swale), appointed Professor of Physio- 



logv at the Middlesex Hospital Medical School, 616 

 Vines (Prof. S. H.), Impending Retirement of, from the 



Sherardian Professorship of Botany in the University 



of Oxford, 167 

 Vinter-Hansen (Miss), and Mr. Fischer-Petersen, .-\ New 



Comet, 43 

 Volmat (J.), .Application of .\erial Photography to Hydro- 

 graphic Surveys, 326 

 Vonwiller (Prof. ' O. U.), The Elastic Properties of 



Selenium, 347 

 Vredenburg (E. W.), Shells' of the Family Doliidse, 78 

 Vries (Prof. H. de). The Present Position of the Mutation 



Theory, 213 



Wade (Sir Charles G.), .Australia : Problems and Prospects, 

 130 : Prices and Government Control, 485 



Wadia (D. N.), Geology of India for Students, 502 



Wales (Prince of), .Admission as Fellow of the Royal 

 Society, 571; Conferment of Degree upon, 19; Con- 

 sent to Become an Honorary Member of the Iron and 

 Steel Institute, 77 



Walker (Emery), Reproduction of Illustrations, 1869-1919, 

 252 



Walker (Prof. J.), Organic Chemistry for Students of 

 Medicine. Second edition, 499 



Walker (R. J.), The Development of Geared Turbines for 

 the Propulsion of Ships, 486 



Walker (W.), appointed Chief Inspector of Mines, 397 



Walker-Tisdale (C. W.), and T. R. Robinson, Practical 

 Butter-making. Fourth revision, 528 



Wall (Dr. R. C), appointed Bradshaw Lecturer of the 

 Royal College of Physicians, 608 



Wallace (R. F".), [obituary], ,S73 



Waller (Prof. A. D.), Decrease in Electrical Resistance, 

 520 ; The Energy Output of Dock Labourers during 

 Heavy Work. Part i., 427 



Walmsley (Lieut. L.), The Use of the Aeroplane in African 

 Exploration, 379 



Walpole (Dr. G. S.), The Present Position of the Chemical 

 Industry of Germany, 484 



Walsh (J. 'W. T.), The Resolution of a Curve into a 

 Number of Exponential Components, 325 



Walsingham (Lord), .A Tribute to the late F. DuCane God- 

 man. 40: [obituary article], 376 



Walton (Prof. L. B.), Factors of Organic Evolution, Si 



Warburton (C), The Solitary Wasp, Crabro cephalotes, 



Ward (Prof. H. B.), and Prof. G. C. Whipple, Fresh-water 

 Biology, 498 



Ward (Prof. .L), In the Beginning . . ., 32s 



Ward (Prof. R. De C), Some Characteristics of the Rain- 

 fall of the United States, 483 



Wardlaw (Dr. H. S. H.), The Venous Oxygen Content of 

 the Alkaline Reserve of the Blood in Pneumonic In- 

 Influenza, 407 



Warre (Rev. Dr. E.), [obituary], 572 



Warren (S. H.), A Stone-a.xe Factory at Graig-lwyd, Pen- 

 niaenmawr, 346; Pre-Hijtory in Essex, 112 



Watkins (J. R.), Tests on \Vood for Spars of Aeroplane 

 Wings, 42 



Watson and Sons, Ltd., Catalogue of X-ray and Electro- 

 medical Apparatus, 320 



Watson (D. M. S.), Palaeontology and the Evolution Theory, 



485 



Watson (Prof. G. N.), Difl'raction of Electric Waves, 454 



Watson (Sir George), Endowment of a Chair in American 

 History, Literature, and Institutions, 386 



Watt (Sir George), Cotton Growing in the British Empire, 

 694 



Watts (P.), appointed Lecturer in Psychology in the Uni- 

 versity of Manchester, 616 ; Work as -Assistant to the 

 Director of the Department of Industrial .Administra- 

 tion in the Manchester College of Technology, 648 



Watts (Prof. W. W.), Shropshire : The Geography of the 

 County, 331 



Waugh (¥. W.), Canadian .Aboriginal Canoes, 78 



Wayland (E. J.), The Problem of the Stone -Ages in Ceylon, 

 609 



Weaver (E. R.), and E. E. Weibel. Instruments for De- 

 tecting and Measuring Combustible Gas Present in the 

 Air, 65 



Webber (Dr. W. P.), and Prof. L. C. Plant, Introductory 

 Mathematical .Analysis, 169 



Weber (Sir H.), On Longevity and Means for the Pro- 

 longation of Life. Edited by Dr. F. Parkes Weber. 

 Fifth edition, 527 



Webster (Dr. .A. G.), elected an Honorary Member of the 

 Royai Institution, 358 



Wedderburn (Dr. E. M.), Meteorology and Gunners, 641 



Weigall (Lt.-Col. .A. G.), and C.'Wrey, A Large State 

 Farm : .A Business and Educational Undertaking, 592 



Welldon (Bishop J. E. C), Political Science, 494 ; Training 

 in Citizen.ship, 522 



Wells (H. G.), The Outline of History : Being a Plain 

 History of Life and Mankind. Part i., 371 



Wells (Dr. S. Russell), elected \'ice-Chancelior of London 

 University, 425 



Werner (Prof. A.), [death]. 376 



W'est (Capt. R.), The -Application of .Air-brakes to -Aero- 

 planes, 486 



Weston (Capt. W. J.). The North Riding of Yorkshire, 4 



Wheeler (Dr. Olive), New Views of Human Personality, 513 



Wheeler (R. E. M.), Conferment of the Degree of D.Lit. 

 upon, by the University of London, 616 



Whiddington (Dr.), .A Wireless Method of Measuring e/m, 

 4^4 ; Thermionic Valves on .Aircraft, 630 



Whipple (F. J. W.\ Equal Parallel Cylindrical Conductors 

 in Electrical Problems, 365 ; The Laws of Approacn 

 to the Gcostrophic Wind,.J58 



Whipple (R. S.), elected President of the Optical Society, 

 67. 



Whitby, \ ariation in Hevea hrasiliensis, 98 



Vv'hite (C. T.), .A Revised .Account of the Queensland 

 Lecythidacea', 587 



White (G. F.), Nosema-disease in Bees, 41 



Whitehead (Prof. A. N.), Fundamental Principles in Educa- 

 tion, 522 ; The Theory of Relativity, 632 



Whitman (Prof. C. O.), Inheritance, Fertility, and the 

 Dominance of Sex and Colour in Hybrids of Wild 

 Species of Pigeons, edited by Dr. O. Riddle, 566 ; 

 Orthogenetic Evolution in Pigeons, edited by Dr. O. 

 Riddle, 566 ; The Behavior of Pigeons, edited bv Prof. 

 H. A. Carr, 566 



Whitmell (C. T.), Surface-tension, 27S ; [obituary], 398 



Whittaker (Prof. E. T.). .A Survey of the Numerical 

 Methods of Solving Equations, 550 



Whymper (Capt. R.), The Conditions that Govern Stale- 

 ness in Bread, 09 



Wicksteed (.[. H.'), fobltuary], 443 



Widal (F.), and P. Vallery-Radot, Anaphylaxy due to Anti- 

 pyrin jifter a Long Phase of Sensibilisation, 683 



Wieland (Dr. G. R.), Classification of the Cycadophyta, 

 ^09 



Wiglesworth (Dr. J.), Bequest to Bristol University, 126 



Wilks (Rev. W.), Resignation of the Secretaryship of the 

 Royal Horticultural Society, 377 



