568 



NA TURE 



[April 29, 1922 



WEDNESDAY, MAY 3. 



Institution of Electrical Engineers, at 6. — C. S. Franklin : Short 

 Wave Directional Wireless. 



Society of Public Analysts and other Analytical Chemists 

 (at Chemical Society), at 8. — J. L. Lizius and N. Evers : Studies In 

 the Titration of Acids and Bases.— C. Ainsworth Mitchell : Graphites 

 and other Pencil Pigments. — Dr. J. C. Drummond : The Sulphuric 

 Acid Reaction for Liver Oils and Its Sisniflcance. — W. Sincleton 

 and H. Williams : Inadequacy of " A.tt." Test for Alkalies in 

 Calcium Carbonate. 



Royal Society of Arts, at 8.— N. Heaton : The Production of 

 Titanium Oxide, and its Use as a Paint Material. 



Entomological Society of London, at 8. 



Institute of Metals (at Institution of Mechanical Engineers), at 8. — 

 Sir Ernest Rutherford : The Relation of the Elements (May 

 Lecture). 



THURSDAY, MAY 4. 



Iron and Steel Institute (at Institution of Civil Engineers), at 

 10.30 A.M. — F. Samuelson : Presidential Address. — F. Clements : 

 British Siemens Furnace Practice. — D. E. Roberts : Notes on Blast 

 Furnace Filling.— Prof. H. C. H. Carpenter and Miss C. F. Elam : Effect 

 of Oxidising Gases at Low Pressures on Heated Iron.— -C. R. Austin : 

 Hydrogen Decarburisation of Carbon Steels, with Notes on Related 

 Phenomena. — E. W. Ehn : Influence of Dissolved Oxides on 

 Carburlsing and Hardening Qualities of Steel. 



Royal Institution of Great Britain, at 3. — Prof. E. H. Barton : 

 A Syntonic Hypothesis of Colour Vision. 



Royal Society, at 4.30.— Pro6a6fe Papers.— T>t. C. Shearer: The Heat 

 Production and Oxidation Processes of the Echinoderm Egg during 

 Fertilisation and Early Development. — Dr. H. Hartrldge and R. A. 

 Peters: Interfacial Tension and Hydrogen Ion Concentration.^ 

 W. Cramer, A. H. Drew, and J. C. Mottram : Blood-platelets and their 

 Behaviour in " Vitamin A " Deficiency, and after " Radiation," and 

 their Relation to Bacterial Infections. 



Royal College of Physicians of London, at 5.— Prof. E. Mellanby : 

 Some Common Defects of Diet and their Pathological Significance 

 (Oliver Sharpey Lectures) (2). 



Linnean Society of London, at 5. — Prof. Lloyd Williams: The 

 Life-history of Laminaria and Chorda. 



Institution of Locomotive Engineers (at Engineers' Club, Coventry 

 Street, W.l), at 7.15. — J. A. Hookham : Comparison between Super- 

 heated and Non-superheated Tank Engines. 



Chemical Society, at 8. — I. E. Balaban and F. L. Pyman : Bromo- 

 derivatives of (ilyoxaline. — E. P. Perman : The Properties of 

 Ammonium Nitrate. Part IV. The Reciprocal Salt-pair NHiNO, 

 + NaCl'T'^NH^Cl + NaNO,.— Prof . E. C. C. Baly and H. M. Duncan : 

 The Reactivity of Ammonia.— Prof. E. C. C. Baly, Prof. I. M. 



• Heilbron, and D. P. Hudson : Photocatalysis. Part II. The 

 Photosynthesis of Nitrogen Compounds from Nitrates and Carbon 

 Dioxide. 



Civic Education League (at Belgravia Hotel, Grosvenor Gardens, 

 S.W.I), at 8.15.— W. de la Mare : Character. 



FRIDAY, MAY 5. 



Iron and Steel Institute (at Institution of Civil Engineers), a* 

 10.30 A.M.— D. Selby-Blgge : Recent Developments In Powe"" 

 Production. — A. : Westgren and 6. Phragmen : X-ray Studies on 

 the Crystal Structure of Steel. — N. T. Belaiew : The Inner Structure 

 of the Pearlite Grain. — J. H. Whiteley : Formation of Globular 

 Pearlite. — A. F. Hallimond : Delayed Crystallisation In the Carbon 

 Steels : the Formation of Pearlite, Troostlte, and Martensite. — 

 K. Honda : The Constitutional Diagram of the Iron-Carbon System 



: based on Recent Investigations. — K. Honda and T. Kikuta : The 

 Stepped Al Transformation In Carbon Steel during Rapid Cooling.- 

 N. Yamada : The Heat of Transformation of Austenite to Martensite, 

 and of Martensite to Pearlite. 



Royal Society of Arts (Dominions and Colonies and Indian Sections), 



: at 4.30.— Prof. W. H. Eccles : Imperial Wireless Communication. 



Royal Astronomical Society (Geophysical Discussion), at 5. 



Royal College of Surgeons of England, at 5. — Sir Arthur Keith : 

 Demonstration of Mus6um Specimens illustrating Umbilical and 

 Diaphragmatic Hernia. 



Institution of Electrical Engineers (London Students' Section), 

 at 7. — R. P. Howgrave-Graham : Electrically Osclllatorv Discharges. 



Institution op Mechanical Engineers (Informal Meeting), at 7. — 



• Failures. 



Royal Institution of Great Britain, at 9.— Dr. M. Grabham : 

 ■ Biological Studies in Madeira. 



SATURDAY, May 6. 

 HoYAL Institution of Great Britain, at 3.— Prof. D. H. MacGregor : 

 ' Industrial Relationships (2). The Problem of Structure. 



PUBLIC LECTURES. 



(A number in brackets indicates the number of a lecture in a series.) 



FRIDAY, April 28. 



Bedford College, at 5.15.— Prof. E. Claparfede : L'Intelllgence et 



la Volont^ (1). (In French.) 

 King's College, at 5.60.— Dr. J. Hjort : Biological Aspects of 



Oceanography (1). 



MONDAY, MXYl. 



Bedford College, at 5.15.— Prof. E. Claparede : L'Intelllgence et 



la Volont6 (2). (In French.) 

 King's College, at 5.30.— Dr. J. Hjort: Biological Aspects of 



Oceanography (2). 



TUESDAY, UA.Y 2. 

 University College, at 5. — Sir Arthur Shipley : Insects and 



Bedford College, at 5.15. — Prof. E. Claparfede : L'Intelllgence et 



la Volont6 (3). (In French.) 

 King's College, at 5.30.— Dr. J. Hjort: Biological Aspects of 



Oceanography (3). — Prof. H. Wildon Carr : The Principle and 



Method of Hegel (1). The Real and the Rational. 



WEDNESDAY, MAY 8. 

 ROYAL Society of Medicine, at 5.— Prof. C. Winkler : The Human 



Neo-Cerebellum. 

 University College, at 5.15. — Dr. D. H. Scott : The Early History 



of the Land Flora (2). 



TH URSD AY, May i. 



St. Mary's Hospital (Institute of Pathology and Research), at 5.— 

 Sir Archibald E. Garrod : More Inborn Errors of Metabolism. 



Royal Society of Arts, at 5.15. — Sir Lawrence Weaver: Rural 

 Re-Settlement and Its Relation to Public Health (1) (Chadwick 

 Lecture). 



FRIDAY, MAY 5. 

 University College, at 5. — Prof. T. Borenlus ; The Re-dlscovery 



of the Primitives (Admission by Invitation only) ; — at 5.30. — Prof. 



W. R. Shepherd : The Expansion of European Civilisation (1). 

 King's College, at 5.30. — Dr. J. Hjort : Biological Aspects of 



Oceanography (4). — R. F. Young : The University of Prague. 



CONTENTS.. PAGE 



The Education Estimates . . . • . 537 



Studies in Symbiosis 538 



Native Life in the Highlands of Assam. [Illustrated.) 



By Henry Balfour 539 



The Manufacture of Explosives 541 



Popular Expositions of Relativity .... 544 

 The Induction Motor By Dr. A. Russell . -545 



Our Bookshelf 546 



Letters to the Editor :— 



Discoveries in Tropical Medicine. — Sir E. Ray 



Lankester, K.C.B., F.R.S 549 



Atmospheric Refraction.— Dr. J. de Graaff Hunter ; 



Instr. -Commander Thos. Y. Baker, RN. . 549 



Memory.— Sir G. Archdall Reid, K.B.E. . . 551 

 Walaeus and the Circulation of the Blood. — Dr. G. 



Arbour Stephens . . -552 



Transcription of Russian Names. — Dr. B. Brauner . 552 

 Evolutionary Faith and Modern Doubts. By Dr. W. 



Bateson, F.R.S 553 



Alternating- Current Mineral Separation. By Prof. 



S. J. Truscott 556 



Obituary :— 



Prof. J. C. Branner 557 



Dr. Andrew McWilliam, C. B. E. . . .557 



Current Topics and Events 55^ 



Our Astronomical Column : — 



The April Meteors, 1922 5^° 



Eccentricity of Double-.Star Orbits .... 560 



Progressive Latitude Changes 560 



Effective Temperatures of Stars .... 560 



Research Items 56 ' 



The Aryan Problem 5^3 



Woollen and Worsted Research . • . .564 



Coal Resources of South Africa. By H. L. . . 564 

 A National Council for Mental Hygiene . .565 

 University and Educational Intelligence . . .565 



Calendar of Industrial Pioneers 566 



Societies and Academies 5^6 



Official Publications Received 5^7 



Diary of Societies 5^7 



NO. 2739, VOL. 109] 



