XXVI 



Index 



V Nature, 

 ^April 15, 1920 



Racehorses, The Colours of, Sir Wiiliatn Ridgeway, 334 

 Radiation Temperatures, S. Pickering, 153 ; Dew, S. 



Skinner, 277 

 Radio-activity and Gravitation, Sir Ernest Rutherford and 



Dr. A. H. Compton, 412 

 Radio-activity, Relativity and, Prof. J. Joly, 468 

 Reaction and Gravitational Field, Heat of. Prof. F. G. 



Donnan, 392 

 Refractive Index, Variations of, F. Tvi'yman, 315 

 Refractive Indices, Variation of, Sir Henry A. Miers, 334 

 Relativity and Radio-activity, Prof. J. Joly, 468 

 Relativitv and the Displacement of Frauhofer Lines, Prof. 



W. G.'DufTield, 659 

 Royal Meteorological Society's Phenological Returns, 



H. B. Adames and J. E. Clark, 437 

 Scientific and Industrial Research, The Control of. Dr. 



W. M. Travers, 597 

 Scientific Workers and a National Federation, Major 



A. G. Church, 693 

 Sex-phenomena in the Common Limpet, Dr. J. H. Orton, 



373 



Silica Glass, The Doubly Refracting Structure of, Lord 

 Rayleigh, 153 ; R. W. Lawson, 335 



Silkworm, Linkage in the : A Correction, Prof. \V. Bate- 

 son, 315 



Snails, Mortality among, and the Appearance of Blue- 

 bottle Flies, Dr. N. Annandale, 412 



.Sociological Society, The, T. J. C. Fraser Davies, 662 



Spectral Lines, Displacement of, R. W. Lawson, 565 



Straight Path, The, Dr. A. A. Robb, 599 



Strasbourg, The University of. Mathematics at, H. B. 

 Heywood, 74 



Sugar-beet Seed, Prof. T. D. A. Cockerell, 661 



Sun, Power from the, A. A. Campbell Swinton, 392, 532 ; 

 A. S. E. Ackcrmann, 500 



Surface-tension, C. T. Whitmell, 278 



Temperature in the Sun, K. Mallock, 113 



Thermionic Valves on Aircraft, Prof. R. Whiddington, 

 630 



Thunder, The Audibility of, Capt. C. J. P. Cave, 132 ; 

 Dr. H. O. Forbes, 315 



Time Relations in a Dream, J. Barcroft, 154 



Ultra-violet, A Helium Series in the Extreme, Prof. T. 

 Lyman, 314; Prof. W. M. Hicks, 393; Prof. T. Lvman, 



565 

 Valour and Service, Statistics of. Major A. G. McKendrick, 



660 

 Vertical-pipe Irrigation for Orchards and Market-gardens 



in Arid Climates, Prof. I. Giglioli, 276 

 Volcanic Rocks in Northern Kordofan, Sudan, W. Campbell 



Smith, 693 

 "White Water." The, Capt. A. R. Palmer; Prof. J. 



.Stanley Gardiner, 563 

 Wireless Stimulation, The Response of Plants to. Sir J. C. 



Bose, 172 

 Wool, Fine, A Search for. Prof. J. C. Ewart, 153 

 Worms, Luminous, Rev. S. Graham Brade-Birks, 23, 93 ; 



H. E. Aldridgc, 174; Rev. H. Friend, 334 



Cotton : Growing in the British Empire, Sir George Watt, 



694 ; Industry, Botanical Research .Studentships in 



Connection with the, 186 

 Crahro cephalotcs. Note on the Solitary Wasp, C. War- 

 burton, 366 

 Craibstone Animal Nutrition Research Institute, Dr. 



R. H. A. Plimmer appointed Head of the Department 



of Bio-Chemistry of, 127 

 Cretaceous Plant-remains from Tennessee, &c.. Dr. E. W. 



Berry, 542 

 Criminology : Dr. M. Parmelee, 687 ; and Nervousness, 687 

 Crop Plants, The Botany of. Prof. W. W. Robbins, 46 

 Cross-Circulation as a Physiological Method, Prof. W. M. 



Bayliss, 479 

 *' Crossing-over, " J. W. Gbwen, 541 

 Crystal : A curious, from the Binncntal, Dr. G. F. H. 



Smith, 326; -forms. New, on Pyrites, Calcite, and 



Epidote, L. J. Spencer, 326 

 Cuba. Eastern, Mammals Collected During 1917 in. Dr. 



H. E. Anthony, 672 

 Cultivated Plants, Botany of, 46 



Cultural Reality, Dr. F. Znaniecki, 110 



Cyanamide, The Transformation of, into Urea by the 

 Micro-organisms of the Soil, P. Maz6, Vila, and Le- 

 moigne, 387 



Cyanogen Chloride, Ch. Mauguin and L. J. Simon, 88 ;| 

 Preparation of, by Hcld's Method, Ch. Mauguin and L. « 

 J. Simon, 44 



Cycadophyta, Classification of the. Dr. G. R. Wieland, 509 



Cycads, The Living, Prof. C. J. Chamberlain, 410 



Cylindrical Conductors. Equal Parallel, in Electrical Prob- 

 lems, F. J. W. Whipple, 365 



Cyi>rus : Excavations in, in 1913, Prof. J. L. Myres, 487; 

 Measurements of Skulls in, L. H. D. Buxton, 487 



Dabchick, The Courtship of the, J. Huxley, 359 



Dairying, The Outlook in, J. Mackintosh, 554 



" Daily Telegraph " Victory Atlas of the World, The. 



Part i., 276, 419; The Review in Nature of the, 674- 

 Dalhousie University, Halifax, Nova Scotia, Centenary of, 



146 

 Dams : Studies in the Construction of, Earthern and 



Masonry, Prof. E. R. Matthews, 434 

 Danes' Dyke, T. Sheppard, 445 

 Dartmoor : Hydro-electric Supply Scheme, Abandonment 



of the, 541 ; Water-power and, 461 

 Davy-Faraday Research Laboratory, The, of the Royal 



Institution, 264 

 " Daylight," or Colour-matching Lamp, A New Form of, 



I 



L. C. Martin, 358 



DEATHS. 



Aitken (Dr. J.), 318, 337 



Barren (Prof. J.), 444 



Bissell (Dr. W. G.), 357 



Chadwyck-Healey (Sir Charles), 136 



Chalmers (S. D.), 318 



Chapman (R. H.), 608 



Cummings (B. F.), 177 



Dallas (W. L.), 63 



Dunlop (Sir Nathaniel), 340 



Eotvos (Baron R. von), 319 



Fraser (Sir Thomas R.), 474, 505 



Garner (R. L.), 573 



Greenwood (Dr. H. C), 443 



Groves (C. E.), 608, 637 



Harcourt (Dr. A. G. 'Vernon), 49 



Haverfield (Prof. F. J.), 117 



Hazen (Dr. J. V.), 357 



Headlev (F. W.), 358 



Hitchcock (Prof. C. H.), 358 



Hopkins (Dr. G.), 442 



Izat (A.), 540 



Jackson (Sir John), 398 



Jourdain (P. E. B.), 117 



Keeling (Lt.-Col. B. F. E.), 317 



King (Prof. L. W.), 27 



Lvster (Dr. C. R. C), 572 



Macalister (Prof. A.), 8, 26 



Macloskie (Prof. G.), 540 



McKelvy (E. C), 507 



Marshall (Rev. E. S.), 377 



Mercier (Dr. C. A.), 8, 50 



Moreno (Dr. F. P.), 508 



Nethersole (Sir Michael), 607 



Osier (Sir William), 443, 472 



Palmer (G. W.), 136 



Pirsson (Prof. L. V.), 443 



Raworth (B. A.), 135 



Reynolds (Prof. J. Emerson), 701 



Ricc6 (Prof. A.), 378 



Sachs (E. O.), 63 



Smith (Dr. V. A.), 671 



Strassmaier (Father J. N.), 506, 540 



Trail (Prof. J. W. H.), 76 



Turner (H. G.), 702 



Wallace (R. F.), 573 



Walsingham (Lord), 376 



Warre (Rev. Dr. E.), 572 



Werner (Prof. A.), 376 



