400 



NA TURE 



[March 23, 1922 



Royal Society of Medicine (Medicine Section), at 5.30. — Dr. O. 

 Heath : The Natural Cure of a Common Cold. — Dr. T. I. Bennett and 

 Dr. Dodds : Observations of Cases involving Disorders of Secretion 

 in the Upper Alimentary Tract. 



Institute of Marine Engineers, at 6.30. — E. A. Evans : Petroleum 

 and Lubrication. 



BoYAL Photographic Society of Great Britain, at 7. — A. C. 

 Banfield : The Trist Three-colour Exposure Camera. — General 

 Electric Co., and Ilford Ltd. : Two papers dealing with the " Osglim " 

 Lamp and its uses for photographic purposes. 



Illuminating Engineering Society (jointly with the Royal Institute 

 of British Architects) (at Royal Society of Arts), at 8. — Discussion 

 on The Lighting of Public Buildings ; Scientific Methods and 

 Architectural Requirements, (a) An Account of Experimental Work 

 and Results, presented by Dr. E. H. Rayner, J. W. T. Walsh, and 

 H. Buckley. (6) Some examples of the Lighting of Decorative 

 Interiors. 



Royal Anthropological Institute, at 8.15. — H. J. E. Peake : 

 Bronze Swords and the Aryan Problem. 



WEDNESDAY, March 29. 



Prehistoric Society of East Anglia (Annual London Meeting) 

 (at Society of Antiquaries), at 2.15.— O. G. Crawford and H. J. E. 

 Peake : A Flint Factory at Newbury Sewerage Outfall Works, 

 Thatcham, Berks. — Miss Nina F. Layard : Presidential Address : 

 Prehistoric Cooking Places in Norfolk, with a brief account of 

 Heating Stones, their History and Significance. — L. A. Armstrong : 

 Further Discoveries of Engraved Flints and Implements at Grimes' 

 Graves. — Dr. A. Smith Woodward : Description of the Rhodesian 

 Skull. — E. J. Wayland : Palaeolithic Types of Implements in relation 

 to the Pleistocene Deposits of Uganda. 



Industrial League and Council (at Caxton Hall), at 7.30. — Major 

 I. Salmon : The Necessity for Educating the Worker in Industrial 

 Economics. 



Royal Society of Arts, at 8. — Sir Thomas Oliver : Alcohol in 

 Relation to Industrial Hygiene (Shaw Lecture). 



THURSDAY, MARCH 30. 

 Royal Institution of Great Britain, at 3. — Prof. A. M. Hind : 



Landscape Etchers : New and Old (1). 

 Chemical Society (Annual General Meeting), at 4.30. — Sir James 



Walker : Presidential Address. At 8 — Informal Meeting. 

 Royal Society, at 4.30. — Probable Papers.—Piof. H. E. Roaf : The 



Acidity of Muscle during maintained Contraction. — The late Dr. 



W. G. Ridewood : Observations on the Skull in foetal specimens of 



Whales of the Genera Megaptera and Balaenoptera. — Dr. W. L. Balls : 



Further Observations on Cell- Wall Structure as seen in Cotton Hairs. 



— L. T. Hogben and F. R. Winton : The Pigmentary Effector 



System. I. Reaction of Frog's Melanophores to Pituitary Extracts. 



— Dr. Agnes Arber : The Development and Morphology of the Leaves 



of Palms. 

 Newcomen Society (at Institute of Marine Engineers), at 5. — Eng.- 



Comdr. E. C. Smith : The Centenary of Naval Engineering : A 



Review of the Early History of our Steam Navy. 

 Royal College of Physicians of London, at 5. — Dr. H. Mackenzie : 



Diseases of the Thyroid Gland (Lumleian Lectures), (1). 

 Royal Aeronautical Society (at Royal Society of Arts), at 5.30.— 



Capt. G. de Havilland : Design of a Commercial Aeroplane. 

 Institution of Electrical Engineers, at 6. — R. B. Matthews : 



Applications of Electricity to Agriculture. 

 Royal Society of Medicine (Urology Section), at 8.30. — K. M. 



Walker : Renal Infections, with an account of experimental work 



on the ascending route. 



FRIDAY, M^rchZI. 

 Association of Economic Biologists (in Botanical Lecture Theatre, 



Imperial College of Science and Technology), at 2.30.— Dr. W. L. 



Balls: Advantages and Defects of Team Work in Economic 



Biology. — Dr. F. Kidd : Problems of Fruit Storage. 

 Institution of Mechanical Engineers, at 6.— Prof. H. H. Jeflfcott : 



The Milling of Screws, and other Problems in the Theory of Screw- 

 threads. 

 Institution of Electrical Engineers (London Students' Section), 



at 7.— J. S. Highfleld : Presidential Address. 

 Junior Institution of Engineers, at 8.— D. P. Dickinson : The 



Steel Melting Shop. 



SATURDAY, Amih 1. 

 Royal Institution of Great Britain, at 3.— Sir Ernest Rutherford : 

 Radioactivity (5). 



PUBLIC LECTURES. 



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



FRIDAY, March 24. 

 Meteorological Office (South Kensington), at 3.— Sir Napier Shaw : 



The Structure of the Atmosphere and the Meteorology of the 



Globe (10). 

 King's College, at 5.30.— Dr. G. Cook : Some Recent Advances in 



our Knowledge of the Strength of Materials. 



SATURDAY, March 25. 

 HORNIMAN Museum (Forest Hill), at 3.30.— Dr. E. Marion Delf : 

 Science and the Food we Eat. 



MONDAY, March 27. 

 Royal Society of Medicine, at 5.— Prof. P. Duval : Donn6es 

 actuelles de la cliirurgie intra-thoracique. 



TUESDAY, March 28. 

 University College, at 5.30.— Col. W. M. St. G. Kirke : Imperial 

 Defence as affected by the War (3). 



WEDNESDAY, MARCH 29. 

 HORNIMAN Museum (Forest Hill), at 6.— W. W. Skeat : The Living 

 Past in Britain (10). 



THURSDAY, MARCH 30. 

 School of Oriental Studies, at 5. — Dr. L. D. Barnett : The Hindu 



Culture of India (5). 

 Royal Institute of British Architects, at 8. — H. E. Stilgoc : 



Water (2), Its Distribution and Use (Chadwick Public Lectures). 



SATURDAY, APRIL 1. 



Polytechnic (Regent Street, W.l), at 10.30 a.m.— Prof. H. E. Arm- 

 strong : The Wonders and Problems of P'ood. 



HORNIMAN Museum (Forest Hill), at 3.30. — Dr. W. A. Cunnington : 

 Woman's Sphere in Savage Africa. 



CONTENTS. r,,GE 



The Universities and Colonial Scientific Services . 365 

 A Monograph on Wheat. By R. H. B. . .366 



The Subjectivity of Psychology. By Prof. H. Wildon 



Carr 368 



The Study of Earthquakes. By R. D. O. . . . 368 

 Chemical and Physical - Constants. By Dr. E. 



Griffiths 369 



Our Bookshelf 370 



Letters to the Editor :— 



Research Degrees and the University of London. — 



Prof. P. G. H. Boswell 373 



Phenological Observations.— L. C. W. Bonacina . 373 

 The Resonance Theory of Hearing.— Dr. H. Hart- 

 ridge 374 



Snow Furrows and Ripples. ( l^Fz^/i illustration. ) — 



E. C. Barton ; Dr. Vaughan Cornish . . 374 

 Historical Notes upon Surface Energy and Forces 



of Short Range. By W. B. Hardy, Sec. R.S. . 375 

 Parasitic Worms of Man and Methods of Suppress- 

 ing Them. By Major F. H. Stewart . 379 

 The Theory of Relativity in Relation to Scientific 

 Method. By Dr. Dorothy Wrinch . .381 



Current Topics and Events 383 



Our Astronomical Column :— 



The Approaching Opposition of Mars . . . 386 



Planetary Observations at Setif .... 386 



Stars of Class A in the Solar Cluster . . . 386 



The Perth Section of the Astrographic Catalogue . 386 



The Light-Curve of Nova Cygni, 1920 . . . 386 



Slides of Photographs taken at Yerkes Observatory . 386 



Research Items 3^7 



Growth and Sex-Factors of Racial Character . . 389 



Mortality Tables 389 



Population Maps 39° 



The International Fishery Investigations. By J. J. . 390 

 Gametic and Zygotic Sterility. By R. R. G. . .39' 



Some Aspects of Cotton Growing .... 392 

 The Geographical Distribution of the Palm 



Pritchardia 392 



Agricultural Experiments at Ithaca, N.Y. By 



W. E. B 393 



The Lhota Nagas 393 



The Development of Ceylon 394 



University and Educational Intelligence . . . 394 



Calendar of Industrial Pioneers 395 



Societies and Academies 39^ 



Official Publications Received 399 



Diary of Societies 399 



NO. 2734, 



109] 



