Nature, ~\ 

 October 7, 1920J 



Index 



xvii 



Leftingwell (E. de K.), The Canning River Region, 

 Northern Alaska, 559 



Lefroy (Prof. H. Maxwell), The Plumage Bill and Bird Pro- 

 tection, ib8; and others, The Education of Economic 

 Entomologists, 503 



Legroux (R.), and J. Mesnard, Vitamines for the Culture of 

 Bacteria, 315 



Leiper (Prof. R. T.), awarded a Mary Kingsley Medal, 697 



Leishman (Sir William), to Deliver the Horace Dobell 

 Lecture, 722 



Lemarchands (M.), The Reactions of the Metallurgy of 

 Zinc, 282 



Lempriere (Dr.), Indices of Physical Prog'ress, 26 



Leonard (A. G. G.), and Agnes Browne, Some Derivatives 

 of Nitrotoluidine, 634 



Leslie (C. D.), [obituary], 19 



Lespieau and Borguel, Production of True Acetylene Hydro- 

 carbons starting .from Epid'ibromhydrin, 635 ; and 

 Garreau, The Phenylpropines, 699 



Lester (J. H.), elected Chairman of the Chemical Section 

 of the Manchester Literary and Philosophical Society, 



335 



Levi-Civita (T.), Harmonics in the Neighbourhood of an 

 Assigned Function, 844 



Levinstein (Dr. H.), The Close Co-operation of the German 

 Government and the " Interessen Gemeinschaft," 722 



Lewes (the late Prof. V. B.), and Prof. J. S. S. Brame, 

 Service Chemistry. Fifth edition, 287 



Lewis (Dr. T.), appointed Oliver Sharpey Lecturer of the 

 Royal College of Physicians of London, 192 1, 755 



Liapin (N.), An Easy Method of Finding Latitude, 625 



Licent (E.), Use of Mixtures of Formal and Chromium 

 Compounds as Fixing Agents, 604 



Lillie (Prof. F. R.), Problems of Fertilisation, 225 



Lindsay (Prof. W. M.), elected a Fellow of the Royal 

 Danish Society of Science, 209 



Ling (A. R.), apfwinted Adrian Brown Professor of Brew- 

 ing in Birmingham University, 154 



Link (Dr. H. C), Employment Psychology : The Applica- 

 tion of Scientific Methods to the Selection, Training, 

 and Grading of Employees, 673 



Lister (Lord), Commemorating the Work of, 654 



Littlewood (J. E.), appointed Cayley Lecturer in Mathe- 

 matics in Cambridge University, 505 



Llewellyn (Dr. T. L.), and others, Lighting Conditions in 

 Mines, with Special Reference to the Eyesight of 

 Miners, 21 



Lloyd (L.), The Destruction of the Glasshouse Tomato 

 Moth, 629 



Lloyd (S. L.), Mining and Manufacture of Fertilising 

 Materials, and their Relation to Soils, 4 



Lockhart (Dr. R. D.), appointed a Lecturer in Anatomy 

 in Aberdeen University, 730 



Lockyer (Sir Norman), Contributions to Astrophysics, 831 ; 

 [obituary articles], 781, 784 



Lockyer (Major W. J. S.), Central Wireless Station for 

 .Astronomy. 454; Helium: Its Discovery and Applica- 

 tions, 360 ; Recent Researches on Nebulae, 489 



I.oder (J^jr Edmund Giles), [obituary article], 301 



L(xlge (Sir Oliver), Prof. A. Righi, 753 



Lones (Dr. T. E.), Zinc and its Alloys, 193 



Loring (Capt. F. C.), Announcement that the Post Office 

 is in Favour of Granting Wireless Licences for Ex- 

 perimental Work, 80 



Louis (Prof. H.), British Iron Ores, 419 



Lounsbury (C. P.). Legislation in Regard to Plant Pests 

 in the British Empire, 502 



Love (Prof. A. E. H.), k Treatise on the Mathematical 

 Theory of Elasticity. Third edition, 511; elected an 

 Honorary Member of the Royal Irish Academy, 

 "3 



Lowe (H. J.), Bees and the Scarlet Runner Bean, 742 



Lowell (Dr. A. L.), The Honorary Degree of Doctor of 

 Law Conferred upon, by Cambridge University, 730 



I.owry (Dr. T. M.), appointed Professor of Physical Chemis- 

 try in Cambridge University, 630 ; and F. C. Hem- 

 mings. The Properties of Powders, 217; and S. Wilding, 

 The Setting of Dental Cements. 217 



Lucas (A.). Legal Chemistry and Scientific Criminal In- 

 vestigation, 772 



Lumi^re (A.), Are Vitamines Necessary to the Development 

 of Plants?, 795 ^ 



Lundmark <K ) The Parallaxes of Globular Clusters and 

 Spiral Nebulae, 215 



Lunn (A. C), The Commutativity of One-parameter Trans- 

 formations in Real Variables, 667 



Lunt (Dr. J.), The Expanding Disc of Nova .Aquilae, ::q; ■ 

 The Spectrum of ij Argus, 149 



Lyons (Col. H. G.), appointed Director and Secretary of the 

 Science Museum, South Kensington, 463 



Lyster (A. G.), [obituary], 143 



MacAlister (Sir Donald), to Receive the Honorary Degree 



of LL.D. from the University of Dublin 8q 

 MacArthur (J. S.), [obituary], 112 

 MacBride (Prof. E. W.), Museums and the State, 68- The 



Method of Evolution, 655 ' 



MacCallum (Dr. Bella D.), appointed Assistant in Botany in 



Edinburgh University, 120 

 MacDougal (Dr. D. T.), The Components and Colloidal 



Behaviour of Protoplasm, 795 

 MacDougall (Dr.), Insects in Relation to Afforestation, 503 

 MacFadden (Dr.), Work of Inspectors of F'ood, 151 

 Macgregor (M.), and others. The Iron Ores of Scotland. 



Vol. xi., 419 

 Maclntyre (Dr. J.), Degree of LL.D. conferred upon, bv 



Glasgow University, ^68 

 Mackenzie (Col. J. S. F.), A Night Raid into Space : The 



Story of the Heavens told in Simple Words, 100 

 Mackenzie (K. J. J.), Cattle and the Future of Beef Pro- 

 - duction in England. With a Preface and Chapter bv 



Dr. F. H. A. Marshall, 62 

 Mackenzie (Sir Leslie), presented with the Medal of Honour 



of the University of Brussels, 440 

 MacLachlan (Dr. N. W.), The Testing of Bars of Magnet 



Steel, 122 

 Maclaurin (Dr. R. C), [obituary], 144 

 MacMahon (Major P. A.), Congruences with Respect to 



Composite Moduli, 474 

 MacMichael (H. A.), Stone Worship, 115 

 MacMillan (Prof. W. D.), The Structure of the Universe, 



789 

 MacNutt Q. S.), The Modern Milk Problem in Sanitation, 



Economics, and Agriculture, 385 

 McAdie (Prof. A.), The Attainment of High 'Levels in the 



Atmosphere, 437 ; The Principles of Aerography, 47<» 

 McAuIav (Prof. A.), Relativitv and Hvperbolic Space, 808 

 McBain' (Prof. J. W.). Colloidal Electrolytes. 760 

 McBride (G. McC), The Possibilities of Cotton-growing in 



South .America, 309 

 McCarrison (Col.); Vitamines in their Relation to Health. 



.S57 

 McClelland (Prof. J. A.), [obituary article], 238; and A. 



Gilmour, The Electric Charge on Rain, 498 ; (the late 



Prof.), and the Rev. H. V. Gill, The Causes of the 



Self-ignition of Ether-air Mixtures, 634 

 McClure (Rev. Canon E.), Buzzards and Bitterns, 105 

 McCurdy (E.), Leonardo da Vinci, 307, 340 

 McDougali (Dr. W.), .An Introduction to Social Psychology. 



Fourtoenth edition, 20-1 

 McEwen (G. F.), and E. L. Michael, The Functional Rela- 

 tion of One Variable to each of a Number of Correlated 



Variables, 82 

 McFarlane (J.), Presidential .Address to Section E of the 



British .Association, 826 

 McFarlane (Miss Margaret), awarded a Keddy Fletcher- 



Warr Studentshin by the University of London, 155 

 McGregor (E. .A.), The " Rod Soiders " of America, 275 

 Mcintosh (Dr. J.), appointed Professor of Pathology at 



Middlesex Hospital Medical School, 2^ 

 Mcintosh (Prof. W. C). International Council for Fishery 



Investigations, 167, 358 

 McKendrick (Major), and Major Morison, Influenza on 



Shipboard, 40 

 McLennan CProf. J. C). Helium : Its Production and Uses, 



747. 778 : Sources of Helium in the British Empire. 



725 : and A. C. Lewis, Spark Spectra of Various Elements 



in' Helium in the Extreme Ultra-violet, 632; J. F. T. 



