3o8 



NATURE 



[November 13, 1919 



Cambridj^e University Calendar for the Year 1919- 

 1920. Pp. xxvi+1125. (Cambridge: At the Univer- 

 sity Press.) 155. net. 



Notes on Magnetism : For the Use of Students of 

 Electrical Engineering. By C. G. Lamb. Pp. viii-h 

 94. (Cambridge : At the University Press.) 5^-. net. 



A Text-book of Quantitative Chemical Analysis. 

 By Dr. A. C. Cumming and Dr. S. A. Kay. Third 

 edition. Pp. xv + 416. (London : Gurney and Jack- 

 son.) 125. 6(J. net. 



Just Look ! or, How the Children Studied Nature. 

 By L. B. Thompson. Pp. viii + 204 + 58 plates. 

 (London : Gay and Hancock, Ltd.) 55. net. 



DIARY OF SOCIETIES. 



THURSDAY. Novembi-r i?. 



Royal Society, at 4.30 — Lt.-Col. R. McCarrison : The Genesis ofOi^dema 

 in Beriberi. — W, Robinson : The Micro^copicaI Features of Mechanical 

 Strains in Timber and the Bearing of thest^ on the Structure of the Cell- 

 wall in Planis.— \V. B. Bottomley : The Effect of Nitrogen-fixing 

 Organisms and Nucleic Acid Derivatives on Plant Growth. — Agnes 

 Arber : The Vegetative Morphology of Pistia and the Lemnaceee. — 

 W. J. Young, A. BreinI, J. J. Harris, and W. A. Osborne: Effects 

 of Exercise and Humid Heat upon Pulse Rate, Blood Pressure, Body 

 Temperature, and Blood Concentration. 



Royal CoLLKGE of Physicians, at 5. — Dr. E. G. Browne: The Origins 

 and Development of Arabian Vledicine : II. Four Great Medical Writers 

 of Persia (IX. -XI. Cent ). (FifzPatrick Lecture.) 



RoYAi, Society of Medicine (Clinical Section), at 5. — H. Curtis : Three 

 Cases of Ma'ignant Disease of the Face illustrating Modern Methods of 

 Radical Operation. 



Institution of Flectrical Engineeks (at Institution of Civil 

 Engineers), at 6. — R'>ger T. Smith : Presidential Inaugural Address. 



Optical Society, at 7.30. — Miss L. M. Gillman : The Chromatic 

 Variaiion of Spherical Aberration in Cemented Doublets.— Instructor- 

 Commander T. V. Baker : I he Correction of First Order Astigmatism of 

 a Single Lens used with a Stop. 



Royal Society OF Medicine (Neurology Section), at 8.30. — P. Sargent: 

 Lessons of the War applied to Spinal Surgery. 



FRIDAY, November 14. 



Royal Astronomical Society, at 5. — W. S. Franks: Micrometrical 

 Measures of Double Stars, List VIT. — F. Stromgren : A New Class of 

 Periodic Solutions in the General Problem of Three Bodies.— J. Evershed : 

 (i) Is Venus Cloud-covered ? (2) The Solar Prominemje of igig, May 29. 

 — J. .Halm : Statistical Investigation of the Distribution of the Stars and 

 their Magnitudes. — H. H. Turner and Mary A- Blagg : The Long- 

 period Variable W Cysni. — N. Liapin : A Method of Determining "the 

 Mean Accidental Variation in Daily Rate of a Numbtr of Chronometers. 

 — H. Bell : A, Proposal to Construct New Tables for Finding Position- 

 lines at Sea. — The following Paper is promised : — Royal Observatory, 

 Greenwich : Corona and Prominences at the Ec'ip'^e of 1919 May 29. 



Physical Sr>ci»^,Tv, at 5. — S. Buiterworth : The Self-Inductance of Single 

 Layer Flat Coils.— Dr. N. W. McLachlan : An Experimental Method 

 of Determining the Primary Current at Break in a Magneto. — F. W. 

 Newman : Note on a Modified Form of Wehnelt's Interrupter. (With 

 Demonstration.) ' 



Malacological Society of London (at the Linnean Society), at 6.— 

 G. C. Robson ; Studies in British Hydrobiidje, Part I. — H. C. Fulton : 

 Description of a New Sub-species of Papui:a tayloriana. Ad. & Rvc. — 

 J. E. Cooler: Additions to a List of Recent Middlesex Mollusca. 

 . SATURDAY, November 15. 



Physiological Society (at London School of Medicine for Women), at 

 4.^0. 



Institution of Electrical Engineers (Informal Meeting) (at Chartered 

 Institute of Patent Agents), at 7.— W. E. Warrilow and others: Discus- 

 sion on Engineering Advertising. 



Surveyors' iNsriTUTioN (Junior Meeting), at 7. 



MONDAY, November 17. 

 Royal Institute of British Architects, at 8. — W. R. Davidge : 



The Problems of London Housing. 

 Royal Geografhical Society (at the ^olian Hall), at 8.30.— Sir Alfred 



Sharpe : A Recent Journey in Liberia. 



TUESDAY, Novemder 18. 



Royal Horticultural Society (at Vincent Square, S.W. i), at 3.— 

 C. H. ^enn : Potato Pos-iibdities. 



Royal Society of Mkdicine. General Meeting of Fellows, at 5. 



Royal Statistical Sociphy, at 5.15.— E. H. Godfrey: Fifry Ytars of 

 Canadian Progress, 1867-1917. 



Instituti in ok Civil Engineers, at 5.30.— M. F. Wilson : Admira'ty 

 Harbour, Dover 



Institution of Petroleum Technologlsts (at Royal Society of Arts), 

 at 5.30.— Rear-Admiral(Retd.) P. Dumas: The ConNrrvaiion of Oil. 



Zoological Society of London, at s.'^o.— Sir Edmund Giles Loder, Bt. : 

 Exhibition of the Skull of a Beaver. — Major J. S. Hamilton : Fi'-Id-Notes 

 on some Mammals in the Bahr el Gebtfl, Southern Sudan. — Dr. J. F. 

 Gemmill : (i) The Development of the Mesenteries in Urticitta crassi- 

 cornis (Actinozoa). (2) The Lepiom^dusan Melicertidinm octocostatum. 

 — M. Turner : The Nematode Parasite* of a Chapman's Zebra.— 

 kev. A. H. Cooke : The Radnia of the Mitridas.— Lt.-Col. S. Monckton 

 Copeman : Experiments on Sex Determination.— Dr. C. F. Sonntag : 

 The Variations in the Dicastric Mnscle of the Rhesus Macaque and the 

 Common Vl-i-aque.— E. S. Russell: Note on the Righting Reaction in 

 Aitcitia gibbosa. Penn. 



NO. 261 I, VOL. 104] 



WEDNESDAY, November 19. 

 Royal United Skryice Institution, at 3.— D. Ogg : German Naval 



Propaganda. 

 Royal Society of Ari" , at 4.30. — Sir H. Trueman Wood : Science and 



Industry. 

 Royal METPXjPiOi.oGicAL Society, at 5.— Lieut. C. W. B. Normand : 



Effect of High Temperature, Humidity, and Wind on the Human Body. 



— Capt. A. J. Bamford : ^ome Observations of the Upper Air over 



Palestine.— E. G. Hilham : Barometric Pressure and Underground Water 



Level. 

 Geological Society of London, at 5.30.— Prof. J. E. Marr: The 



Pleistocene Deposits in the Neighbourhood of Cambridge. 

 Institution ok Electrical Engineers (Wireless Sectional Meeting) 



(at Insiituiion of Civil Engineers), at 6. — Prof. C. L- Fortescue : The 



Design of Multiple Stage Amplifiers using Three Electrode Thermionic 



Valves. 

 Royal Microscopical Society, at 8. — H. M. Carleton: Note on Cajal's 

 Formalin-silver Nitrate Impregnation Method for the Golgi Apparatus. 



— F. I. G. Rawlins: Report on the Collection of Metallurgical Specimens 



recently presented to the Society by Sir Robert Hadfield, Bart., F.R.S. 



THURSDAY, November 20. 



RovAL Society, at 4.30. — Probable Papers : W. J. Johnston*: A Linear 

 Associative Algebra suitable for Electro-magnetic Relations and the 

 Theory of Relaiivity. — Sir Joseph Larmor : Note on Mr. W. J. 

 Johnston's Calculus for Gen ralised Relativity. — Cx. E. B-irsto: The 

 Variation with Frequency of the Conductivity and Dielectric Constant of 

 Dielectrics for High Frequency Oscillations. — F. J. W Whipple : Equal 

 Parallel Cylindrical Conductors in Electrical Problems. — G. A. Schott : 

 The Scattering of X- and Y- Rays by Rings of Electrons. A Crucial 

 Test of the Electron Ring 1 heory of Atoms. 



Linnkan Society, at 5. — P. K. Patten: Plants collected In Mesopotamia 

 and in Southern India. — C. C. Lacaita : Orchis tuaculnta from Monte 

 Gargans.- Dr. G. C. Dmcc : Two New Briti>h Plants. — MissTrower: 

 Paiiitings of British ^«^/.— Prof. R. C. McLean : Sex and Poma. 



Institution of Mining and Metallurgy (at Geolocical Society), at 

 5.30. — H. L. Sulman : A Contribution to the Study of Flotation. 



Chemical Society (and Informal Meeting), at 8. 



FRIDAY, November 21. 

 Institution of Mechanical Engineers, at 6. — C. G. Conrad 1 : Tie 



Present Position of Mechanical Road T'raction. 

 Institution of Electrical Engineers (Students' Meeting) fat tlie 



t ity and Guilds (Engineering) College), at 7.— .\. P. Tro ter : Opening 



Address. 



contents page 



The Turks of Central Asia. liy Sir Henry H. 



Howorth, K CLE,, F. ji.S 273 



The Living Plant. By A. W. H 274 



Our Bookshelf 275 



Letters to the Editor :— 



Scaltering of Light by Resonating Molecules. — Right 



Hon. Lord Kayleigh, F.R. a . . 276 



Vertical-pipe Irrigation for Orchards and Market- 

 gardens in And Climates. — Prof. Italo Giglioli . 276 

 New Sources of Aluminium. — Major J. E. Bacon . 277 

 Radiation Temperaiure : Dew. — Sidney Skinner . 277 

 Surface-Tension — C. T. Whitmell . . . . 278 

 Exceptional Dryness of October, 1919. — W. D. 



Christmas • 278 



Sound Ranging. (Illustrated.) 278 



Results of the fetal Solar Eclipse of May 29 and 



the Relativity Theory. By Dr. A. C. D. Crommelin 280 



Thejubileeof " Nature": Congratulatory Messages 281 



Notes . 295 



Our Astronomical Column:— 



The Leonid Meteors 299 



The Group of Helium Stars in Orion 299 



The Secular Acceleration of the Moon 29^ 



The u lass Kesearcn Association, liy Edward Meigh 299 



The Tobacco Beetle 3°! 



The British Association at Bournemouth : — 



Section II— Anthropology — Opening Address by Prof. 

 Arthur Keith, M.D., LL.D., F.K.S., President 



of the Section ... 3°' 



University and Educational Intelligence . . . . 305 



Societies and Academies 3°7 



Books Received 3°7 



Diary of Societies 3'^ 



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