620 



NATURE 



[February 5, 1920 



logical Institute of the London Hospital between the years 1007-1919 



inclusive, showing the Relative Frequency of Primary and Secondary 



Ovarian Carcinoma. 



FRIDAY, Februakv 6. 

 Ceophysics Committkb (at Royal Astronomical Society), at 5. — Sir 



Charles Parsons and Others : The Practicability of, and Scientific 



Advantages to be derived from, a Deep Boring. 

 Royal Coi-LKtiE of Surgeons, at 5. — V. Z. Cope : The Surgical Aspect 



of Dysentery. 

 Concrete Institute (at "Denison House, 296 Vauxhall bridge Road), 



at 6. — H. J. G. Bamber : The Practical Testing of Cement. 

 Institution of Electrical Engineers (student*' Meeting) (at the City 



and Guilds (Engineering) College), at 7.— F. R. Housden ; Electric Lifts 



and Cranes. 

 Junior In.stitution ok Engineers (at 39 Victoria Street), at 7.30. — 



Capt. J. Bradford : Tank Work in the Army. 

 Technical Inspection Association (at the Royal Society of Arts), at 



7.30. — I. Waite : The Treatment of Steel. 

 Royal Society of Medicine (Anesthetics and Laryngology Sections), 



at 8.30. — Dr. F. S. Rood and Others : Discussion on Ansesthesia in Throat 



and Nose Operations. 

 Royal Institution of Great Britain, at 9. — Prof. Sir Walter 



Raleigh : Landor and the Classic Manner. 



SATURDAY, February 7. 

 Royal Institution of Great Britain, at 3.— Sir F. W. Dyson: 

 The Astronomical Evidence bearing on Einstein's Theory of Gravitation. 

 II. Displacement of Solar Spectral Lines. 



MONDAY, February 9. 



Royal Geographical Society (at I^owther Lodge), at 5. — Capt. H. Alan 

 Lloyd : Characteristics of the Ground as seen from the Air. 



Royal Collf.ge of SuRf;EONS, at 5. — H. T. Gray: The Influence of 

 Nerve Impulses on Gastro-inlestuiil Disorders. 



Biochemical Society (at Imperial College of Science and Technology, 

 Botany Building), at s-'jo. — H. Chick and E. M, Hume : Production in 

 Monkeys of Symptoms closely Resembling Pellagra, by prolong.;d Feed- 

 ing on a Diet of Low Protein Content. — C. C. Wood and S. B. Schryver : 

 Demonstration of Method of Determining the Mcthoxyl Groups in 

 Plant Tissues. 



Royal Society of Medicine (VVar Section), at 5.30. — Sir Wilmot Herring- 

 ham and Others : Discussion on Gas Poisoning. 



Institution of Mechanical Engineers (Graduates' Association), at 

 8.— I 'r. C. C. Carpenter : Fuels. 



Medical Society of London, at 8.30. — Dr. H Drinkwater : The Clinical 

 or Naked Eye Diagnosis of Dipitheria and other Infections of the 

 Fauces, — Dr. T. B. Hyslop : Some New Methods of Illustration. 



TUESDAY, February 10. 



Royal Institution of Grf.at Britain, at 3.— Prof. G. Elliot Smith: 

 The Evolution of Man and the Early History of Civilisation. III. 'Ihe 

 Search for Gold. 



Royal Society of Medicine, at 5. — Prof. A. D. Waller : The Measure- 

 ment of Human Lmotion and of its Voluntary Control (Occasional 

 Lecture). 



Institution of Civil Engineers, at 5.30.— P. M. Crosthwaite : E.\peri- 

 ments on the Horizontal Pressure of Sand. — Dr. A. R. Fulton : Over- 

 turning Moment on Ketaining-Walls. 



Zoological Society of London, at 5.30.— Dr. P. Chalmers Mitchell: 

 Report on the Additions made to the Society's Menagerie during the 

 months of November and December, 1919. — R. I. Pocock ; P^xhibition of 

 Phot'>graphs of a Chinese Sero*. — H. R. Hogg: Some Australian 

 Opiliones. — Dr. C. F. Sonntag : Description of the Larynx and CEsophagus 

 of a Common Macaque, exhibiting .several unusual Features. — R. E. 

 Turner and J. Waterston ; A Revision of the Ichneumonid Genera Labium 

 and Puecilocryptus. 



Royal Photographic Society of Great Britain, at 7.— Annual 

 Gcncal Meeting. 



Quekett MiCKOSCOPiCAi. Ci-uiJ, at 7.30.— .\nnual General Meeting. 

 WEDNESDAY, February 11. 



Royal United Sf.rvice Institution, at 3.— Col. F. C. Fuller: The 

 Tank Corps. 



Royal Society of Arts, at 4.30.— Lieut. -Comm. N. Wilkinson: Naval 

 Camouflage. 



Royal College of Surgeon.s, at s.—J. Sherren : The Late Results of 

 the Surgical i reatment of Chronic Ulcers of the Stomach and Duodenum 

 (Hunterian Lecture). 



THURSDAY, February 12. 



Royal Institution of Great Britain, at 3.— Prof. A. E. Conrudy : 

 Recent Progress in Applied Optics. 



Royal Socieiy, at ^.20.— Probable Papers: J. W. McBain and C. S. 

 Salmon ; Colloidal Electrolytes. Soap Solutions and their Constitution.— 

 C. (-'. Farr and D. B. Macleod : I he Viscosity of Sulphur.— C. V. Raman 

 and B. Banerji : Kaufman's Theory of the Impact of the Pianoforte" 

 Haminer.— Commander T. V. Baker, K.N., and Prof L. N. G. Filon : 

 A Theory of the Second Order Longitudinal Spherical Aberration for a 

 Symmetrical Optical System.— Dr. S. Chapman : A Note on Dr. Chree's 

 Discussion of Two Magnetic Storms (Title only). -Dr. C. Chree : An 

 Explanation of the Criticisms on Dr. Chapman's Recent Paper "An 

 Outline of a Theory of Magnetic Storms" (Title only).— Prof J. W. 

 Nicholson: The Lateral Vibrations of Sharply Pointed Bars.— R. E. 

 Slade: A New Merhod of Specrroph-^tometry in the Visible and Ultra- 

 violet and the Absorption of Light by Silver Bromide. 



British Psychological Society (Education Section) (at London Day 

 Training College), at 6.— Dr. C. W. Kimmins : The Dreams of Children 

 in Blind, Deaf, and Industrial Schools. 



Institution OF Electrical ENGiNEERs(at Institution of Civil Engineers), 

 at 6.— Major K. Edgcumbe : The Protection of Alternating-current 

 Distribution Systems without the U>e uf Special Conductors. 



Oil and Colour Chemists' Association (at 2 Furnival Street), at 7.— 

 Dr. R. S. Morrell : Colloid Chemistry of Paints and Varnishes. 



Optical SocJetv, at 7.30.— J. W. French : The Surface Layer of an 

 fc Optical Polishing Tool.— Mrs. C. H. Griffiths : Aberration Effects in Star 



NO. 2623, VOL. 104] 



Images.— R. W. Cheshire and W. Shacklcton : The Testing of Heliograph 



Mirrors. 

 Institution of Automob'le En^iheers (Graduate Section) (at 28 



Victoria Street), at B. — F. R. Cowell : Steering Gears. 

 Royal Society of Medicine (Neruology Section), at 8. 30.— Dr. Rows: 



Anxiety States. 



FRIDAY, February 13. 

 Royal Astronomical Society, at 5. 

 Physical Societv, at 5. — Prof. C. H. Lees: Presidential Address.— Sir 



Arthur S<:huster ; Atmospheric Refraction during Total Solar Eclipses. — 



To be followed by the Annual General Meeting, 

 Royal College of Sukgeons, at 5. — W. G. Spencer : The Historical 



Relationship between Experiments on Animals and the Development of 



Surgery. 

 MALACdLOfiiCAL SOCIETY OF LoNDON (at the Linnean Society), at 6. 

 RovAi, Institution of Great Rritain, at 9. — Prof W. ^L Bayliss : 



The Vulume of the Blood and its Significance. 



SATURDAY, Feijruarv 14. 

 Roval Instiiu riON ok Great Britain, at 3. — Sir F. W. Dyion : 

 , The Astronomical Evidence bearing on Einstein's Theory of Gravitation. 

 III. Deflecti-n of Light in the Sun's Gravitational Field. 



M. 



CONTENTS. 



The Need for Aircraft Research .... 

 Physiology of Muscular Exercise . . . 

 Theories of Sound Perception. By J. G 



Kashmir and Indian Silks 



A Great Industrialist 



Farming in the New Era. By Dr. E. J. Russell, 



F.R.S 



Our Bookshelf . 



Letters to the Editor: — 



The Nalure of the Katmai Volcanic Gases and 



lincrustalions. (//iiistraffd,) —J. W. Shipley 

 The Control of Scientific and Industrial Research. — 



Dr. Morris W. Travers, F R.S 



The Predicted Shift of the Fraunhofer Lines. — 

 James Rice; Prof. A. S. Eddington, F.R.S. . 



The Straight Path.— Dr. A. A. Robb 



Entente Scientific Literature in Central Europe during 



the War. — Prof. Bohuslav Brauner 



Percussion Figures in Isotropic Solids. — W. J. 



Lewis Abbott 



Change of Colour in Plumage of Captive "Sun- 

 birds" or " Honey-suckers." — Harold Millar 

 Mathematics in the United States. By G. B M. . 

 Shackleton's Last Anlaictic Expedition. (///«.- 



trated.) By W. S. B 



Telephoning by Light. (llUistraUi.) By Prof. A. O. 



Rankine 



Australian Rainfall and Wheat Yield. By W. W. B. 



Notes 



Our Astronomical Column : — 



Comets 



The Motion of the Moon 



Stars of High Velocity 



The St. Louis Meeting of the American Associa- 

 tion 

 Pioneers in the Science of the Weather. By Sir 



Napier Shaw, F.R.S 



The Reduction of Wave Action in Harbours. By 



Dr. Brysson Cunningham 

 St. Andrews Institute for Clinical Research. By 



Prof. P. T. Herring ... . 



Fishery Investigations in South Africa 



University and Educational Intelligence . 



Societies and Academies .... 



Books Received 



Diary of Societies 



P.\GE 



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■ 591 

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■ 592 



592 

 594 



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60 1 

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612 



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614 



6IS 

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6iq 

 617 

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 619 



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Advertisements and business letters to he addressed to the 

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Editorial Communications to the Editor. 

 Telegraphic Address: Phusis, London. 

 Telephone Number: Gerrard 883c 



