XX 



Index 



r Nature, 

 X^April 15, 1920 



Willcocks (Sir William), The Nile Projects, 120 

 Williams (J. G.), The Electrolytic Formation of Perchlorate, 



523 

 Williamson (H. B.), A Revision of the Genus Pultenaea, 555 

 Willis (Dr. J. C), A Dictionary of the Flowering Plants and 



Ferns. Fourth edition, 410 ; Origin of the Flora of 



New Zealand, i;20 

 Willows (Dr. R. S.), Recent Work on Colloids, 650 

 Wilson (C. T. R.), elected President of the Cambridge 



Philosophical Society, 267 

 Wilson (Dr. F. J.), appointed Professor of Inorganic and 



Analytical Chemistry at the Glasgow Technical College, 



iq 

 Wilson (Dr. J.), [obituary], 539 

 Wilson (Prof. J.), The Application of the Food-unit Method 



in the Fattening of Cattle, 682 

 Wilson (the Ven. Canon J. M.), Science and the Church, 



201 

 Wilson (Dr. W.), An Astronomical Model, 344 

 Wimperis (Major H. E.), appointed Head of the Air Navi- 

 gation Research Section of the Air Ministry, 572 

 "Winslow (Prof. C. E. A.), The Untilled Fields of Public 



Health, 703 

 Wood (A.), appointed University Lecturer in Experimental 



Physics in Cambridge University, 425 

 "Wood (Dr. H. B.), Sanitation Practically Applied, 311 

 Wood (Sir H. Trueman), The Development of our Natural 



Resources, 339 

 Wood (Prof. R. W.), Researches on Physical Optics. 



Part 

 526 



ii. Resonance Radiation and Resonance Spectra, 



Woods (Miss), Discovery of a Nova, 160 



Woodward (Dr. \.. Smith), The Antiquity of Man, 212 ; 335 



Wormald (H.), Conferment of Doctorate upon, by the 

 University of London, 185 



Wourtzel (E.), E.xistence of Nitrous Anhydride in the 

 Gaseous State, 651 ; The Velocitv of Oxidation of Nitric 

 Oxide, 683 



Wright (R.), .Apparatus for Vapour-pressure Determina- 

 tions, 581 



Wright (W. B.), Minor Periodicity in Glacial Retreat, 682 



Yapp (Prof. R. H.), appointed Professor of Botany in 

 Birmingham University, 489 



Young (J.), appointed an Assistant Lecturer in the Depart- 

 ment of Physics of Birmingham University, 615 



Young (Prof. S.), Brown's Formula for Distillation, 555 



Young (W. J.), A. Breinl, J. J. Harris, and W. k. Osborne, 

 Effects of Exercise and Humid Heat upon the Pulse 

 Rate, etc., 345 



Zilva (Dr. S. S.), Effect of Prolonged Dietetic Deficiency, 66 

 Zimmer (G. F.), The Mechanical Handling of Chemical 



Materials, 137 

 Znaniecki (Dr. F.), Cultural Reality, 110 



TITLE INDEX. 



Aberdeen University : Dr. J. Cruickshank appointed 

 Geor^ina McRobert Lecturer in Pathology in, 385 ; Con- 

 ferment of Honorary Degrees, 712 



Aberystwyth, University College of Wales, B. M. Jones 

 elected Professor of Chemistry in the, i86 



Absolute Magnitude as a Function of Colour, F. H. Seares, 



479 

 Acacia Seedlings, Part v., R. H. Cambage, 551^ 

 Acacias, Notes on, No. iv., J. H. Maiden, 586 

 Acalypha indica, The Dimorphic Female Flower of, L. A. 



Kenoyer, 297 

 Accipitres, A Synoptical List of the (Diurnal Birds of Prey), 



Parts i. and ii., H. Kirke Swann, 529 

 Accounts Rendered of Work Done and Things Seen, J. Y. 



Buchanan, 686 

 .Meridians, New Methods for the Destruction of, G. Bazile, 



168 

 Acrolein : The Stabilisation of, C. Moureu and C. Dufraisse, 



307 ; C. Moureu, C. Dufraisse, P. Robin and J. 



Pougnet, 650 ; C. Moureu and A. Lepape, 326, 387 

 Actinium, The Genesis of, O. Hahn and L. Meitner, 575 

 Admiralty, Board of. Resignation of Prof. J. C. McLennan 



of the Post of Scientific Adviser to the, 340 

 Adult Education : 452 ; Committee of the Ministry of Re- 

 construction, Final Report of the, 452 

 Advisory Council to the Committee of the Privy Council 



for Scientific and Industrial Research, Sir Henry A. 



Miers appointed a Member of the, 178 

 .Aerial : Photogrammetry, the Present Position of, P. R. 



Burchall, 379; Photography, .Application of, to Hydro- 

 graphic Surveys, J. Volmat, 326 

 .Aeronavigazione e Costruzioni Aeronautiche, Dizionario 



Internazionale di, Italiano, Francese, Inglese, Tede.sco, 



Lt. M. M. Dander, 656 

 Aeronautica, Meteorologia, Prof. G. Crestani, 656 

 Aeronautical Engineers, Institute of. Foundation of an. Prof. 



G. H. Bryan President Elect of, 340 

 Aeronautics : Exhibition at the Science Museum, South 



Kensington, 397 ; in Italy, Prof. G. H. Bryan, 656 



-Aero-Photography, the Field of Application for. P. Dautriche, 

 99 



Aeroplane : Altitude Record, An, R. Rohlfs, 77 ; Flight from 

 Cairo to Capetown, 607 ; to Australia, The, Capt Ross 

 Smith, 397 ; High Altitude, An, R. Rohlfs, 63 ; Use of 

 the, in African Exploration, Lieut. L. Walmsley, 379 



^Ether : and Matter : being Remarks on Inertia, and on 

 Radiation, and on the Possible Structure of Atoms, 

 Sir Oliver J. Lodge, 15, 82 ; The, versus Relativity, 

 Sir Oliver J. Lodge, 543 



Afforestation of Water-catchment Areas, Prof. A. Henry, 

 520, 554 



Afghanistan, The Folk-life of, Ikbal All Shah, 573 



Africa, Tropical, Raw Materials and Railways of. North 

 of the Equator, M. Tilho, 68 



African Rift Valley, The, Prof. J. W. Gregory, 518 



Agar-agar, The Preparation of, in California, 703 



Agricultural : and Horticultural Research Station, Long 

 Ashton, Report of the, 418; Experimental Station, 

 Ithaca, New York, Reports of the, for the Years 

 1914— 17, 482 ; Research, A New Development in, 579 



Agriculture : and the State, Sir Arthur Grififith-Boscawen, 

 181 ; at the British Association, Prof. A. Lauder, 553 ; 

 Electricity in. Dr. J. F. Crowley, 268; Frosts and, in 

 the United States, 95 ; Productive, Prof. J. H. Gehrs, 

 495 ; The Preparation of Substances important in. 

 Prof. C. A. Peters. Third edition, 497 

 Aiming at Objects in the Air, A System of, .\. Bichet, 



307 

 Air : -brakes, Application of, to Aeroplanes, Capt. R. West, 

 486 ; Diminution of the Transparency of the, at Paris, 

 L. Besson, 651 ; Navigation Research Section of the 

 Air Ministry, Major H. E. Wimperis bppointed Head 

 of the, 572 ; obtained at High Altitudes, Proposed 

 Analysis of, C. T. Kingzett, 540 ; Pollution of the, by 

 Smoice, etc., .Appointment of a Departmental Com- 

 mittee upon, 701 ; Routes, Imperial, Major-Gen. Sir 

 F. H. Svkes, 634; -screws. The Sound, emitted bv, 

 Prof. G. H. Brjan, 486 



