XIV 



Index 



r Naturt, 

 \_April n, 1921 



Kiaer (Dr. J,), Fish Remains found on the West Coasi 

 of Norway, 355 



Kidd (Dr. W.), The Scratch-RefJex in the Cat, 9 



King (A. S.), Absorption Spectra with the Electric Furnace, 

 135 ; Effect of a Magnetic Field on Electric-furnace 

 Spectra, 135 



King (L. v.). 'I'he Design of Diaphragms Capable of Con- 

 tinuous Tuning, 714 



Kingsley-Higginson (Mrs.), A New Kinematograph Pro- 

 jector, 841 



Kipling (Rudyard), Letters of Travel (1892-1913), 435 



Kleeman (Prof. R. D.), A Kinetic Theory of Gases and 

 Liquids, 465 



Kling (A.), and f^. Florentin, The Properties and Constitu- 

 tion of the Group (CO. CI,), 746 



Knott (Dr. C. G.), appointed Reader in Applied Mathe- 

 matics in Edinburgh University, 298 



Knowlton (F. H.), Catalogue of the Mesozoic and Ceno- 

 zoic Plants of North America, 89 



Knox (Dr. R.), elected President of the Rontgen Society, 

 416 



Koch (L.), Leading the Bicentenary Expedition to the 

 North of Greenland, 87 



Kofoid (Prof. C. A.), Hookworm and Human Efficiency, 

 486 ; The Neuro-motor System of Ciliate ;uid Flagellate 

 Protozoa. 485 



Kopff (Prof. U.), Die Einsteinsche Relativitatstheorie, 466 



Kovarik (A. F.), A Statistical Method for Studying the 

 Radiations from Radio-active Substances and the X- 

 Rays, etc., 167 



Kraemer (Prof. H.), Scientific and Applied Ph.nrmacognosy 

 Second edition. 531 



Kroeber (A. L.), California Culture Provinces, 320 



Krogh (Prof. A.), awarded the Nobel Prize in Medicine for 

 1920, 319 



Kropotkin (Prince P.), Illness of, 701 ; [obituary article], 



735 ' , 



Kudara (Dr.), Revised Elements of Tempers Comet, 322 

 Kunstler (J.), A Treatment Preventive of Oidium, 90 



Lacroix (A.), Existence in Madagascar of Silicate of Scan- 

 dium and Yttrium, Thortveitite, 134 



Laffitte (L.), Methods Used by the French Naval Authori- 

 ties to Refloat Torpedoed Vessels, 771 



Lagatu (H.), The Respective Rdles of Potash, Lime, and 

 Magnesia in Cultivated Plants, 778 



Lake (P.), and R. H. Rastall, A Text-!»ok of Geology. 

 Third edition, 564 



Lamb (Prof. H.), Higher Mechanics, 655 ; The Vibrations 

 of an Elastic Plate in Contact with Water, 362 



r^anchesfer (W. F.), and A. G. Thacker, The Superior 

 Vena Cava of the Cat, 520 



Lang (Dr. W. D.), A Handbook of British Mosquitoes, 7 



Langley (Prof. J. N.), Practical Histology. Third edition, 



«44 



Lankester (Sir E. Ray), Heredity and Acquired Characters, 

 500 ; Flint Implements from the Cromer Forest Bed. 

 757 ; Light Produced by Rubbing Quartz Pebbles 

 together, 310; Luminosity by Attrition, 438: The 

 British Association, 109 



La Porte (M.). The Utilisation of Tidal Currents on the 

 Coasts of France, 618 



Larmor (Sir Joseph). Questions in Physical Indetermina- 

 tion, 196 



Lassen (J.). The Danish System of Credit Corporations, 96 



Laubeuf (M.), A Small Subm.Trine for Oceanographic 

 Work, 167; The Application, of the Pitot Tube to the 

 Measurement of the Velocity of Ships, 586 



Lauder (Or. A.), Agriculture at the British .Association, 



S8i 

 Laughlin (H H.). Calrulntintr .Ancestral Influence in Man, 



587 

 Lay (Dr. W.), The Child's Unconscious Mind : The Rel.n- 



tions of Psycho-analysis to Education. 4 

 Lea (A. M.), New Species of Australian Coleoptera. Part 



xvi., 427 

 Lea (Prof. F. C), Effect of Temperature on some of the 



Properties of Materials, 422 

 T^each (.A. E.), Revised and Enlarged by Dr. A. L. Winton. 



Food Inspection and Analysis : For the Use of Public 



Analysts, Health Officers, Sanitary Chemist.s, and 

 Food Economists. Fourth edition, 141 

 Leake (H. M.), and 13. Ram Pershad, Selection and Cross- 

 ing of Indian Varieties of Opium Poppy, 57 

 Learmonth (J. R.), Study of Blood Reactions, 158 

 Learmonth (W.), Kirkcudbrightshire and Wigtownshire, 



Sbi 

 Lebailly (C), Prevention and Treatment of Aphthous 

 Fever by the Serum or Blood of Cured Animals, 231 ; 

 The Conservation or Disappearance of 4he Virulence 

 of Aphthous Milk in the Course of the Manipulations 

 following Treatment, 521 ; The Virulence of the Milk 

 in Aphthous Fever, 35 

 Lebeau (P.), and A. Damiens, The Composition of some 



Coke-oven Gases, 682 

 Le Chatelier (H.), The Phase Rule, 555; (and F.), The 

 Mechanical Properties of Plastic Bodies: The Import- 

 ance of Reactivity, 362 

 Lecomte (H.), The Radial Secretory Canals of Wood, 231 

 Lee (A. B.), The Structure of Certain Chromosomes and 



the Mechanism of their Division, 840 

 Lee (O. J.), and G. van Biesbroeck, The Diameters of 



Stars, 740 

 Lee (Rosa M.), Age and Growth Determination in Fishes, 



49 

 Lee (Dr. W. T.), Aerial Photography of Shoals and Chan- 

 nels, 608 

 Lees (S.), Constant-volume Explosion Experiments, 849 

 Lehfeldt (Prof. R.), Labour Conditions in South Africa, 



388 

 Lemoine (G.), The Mutual Reaction of Oxalic and Iodic 



Acids, 586 

 I-.epape (A.), The Radio-active Analysis of the Thermal 



Springs of Bagn^res-de-Luchon. 363 

 Lester (J. H.), The Textile Chemist, 554 

 'Levaditi (C), Culture of the Organism of Syphilis in 



Symbiosis with the Cellular Elements, 100 

 Levinstein (Dr. H.), Appeal for the Protection of the 



British Dye Industry, 397 

 I-evy (S. L), Modern Explosives, 340 

 Lewis (A. L.) [obituary article], 317 

 Lewis (Isabel M.), Splendours of the Sky, 309 

 Lewis (Dr.), Auricular Flutter, 550 



'Lewis (T.), Destruction of Eggs of the Lesser Tern. 122 

 Lewis (Dr. T.), The Relation of Physiology to Medicine, 

 549 ; and others. The Wave of Excitation in Auricular 

 Fibrillation. 386 

 'Lewis (Prof. VV. C. McC), Colloid Chemistry, 547 

 Lillie (Prof. R. S.), The Nature of Protoplasmic and 



Nervous Transmission, 449 

 f.im (R. K. S.). The International Physiological Congress. 



1920. Summary of Papers, 707 

 I.ind (Lieut.-Commr. W. L.), Internal-combustion En- 

 gines : Their Principles and Application to Auto- 

 mobile. Aircraft, and Marine Purposes, 210 

 l.indblad (B.), Distribution of Intensity in Solar and Stellar 



Spectra, 59 

 Linecar (A.), A General Governing Principle guiding all 



School Work, 579 

 Ling (Prof. A. R.), Sugar Technology and Fermentation, 



'680 

 Little fC. C), Studies of Hereditv, 582: The Human Sex 



Ratio. 587 

 I ivi (Major-Gen. R.) [obituary]. 158 

 T.loyd (Capt. H. .A.). Classification of the Ground from the 



Air, 88 : Thn Essentials of Maps for Aviators, 390 

 Lloyd (J. H.), The Early Development of the Pronephros 



in Scvllium and Chrvsemys, 487 

 Llovd fDr. Ll.L The Greenhouse \\'hite-fly and M^asurps 



for its Control. 739 

 Locket (G. H.), M.Tting Dances of Spiders, 345 

 Lockyer f.Sir Norman), Memorial Trij)utes to, 20 

 I.ockyer (Major W. J. S.), The New St.Tr in Cygnus. 32. 



Lodge (Sir Oliver), Alexander Muirhe.id. F.R.S.. 668: 

 Einstein's Shift of Spectral Lines. 373 ; Modern P.iss 

 and Honours Degrees. 7:7: Name for the Positive 

 Nucleus. 467 ; Popular Relativitv and the Velocity of 

 Light. 325 : Rpstor.Ttion of Energy. 341 : Stellar 



