268 



NATURE 



[October 21, 1920 



ixiv+31-. 



28x. net. 

 P. Kemp. 



Nornianica Nunc Primum Edita. Pp. 

 <0.\onii : E. Typoj^rapheo Clarendoniano.) 



Rudiments of'Electrical Engineerinf<. Bv . ^. 



Pp. viii + 255. (London : Macmillan and Co., Ltd.) (m. 



The Ila-Speaking Peoples of Northern Rhodesia. 

 By the Rev. E. W. Smith and Capt. \. M. Dale. 

 Vol.. i.,. pp. xxvii+423; vol. ii., pp. xiv+433. 

 (London : Macmillan and Co., Ltd.) Two vols., ^o,s. 

 net. 



The Early History of Surgery in Great Britain : Its 

 Organisation and Development. Bv Dr. G. Parker. 

 (Medical Historv Manuals.) Pp. ix+204. (London : 

 .\. and C. Black, Ltd.) 7.?. 6rf. net. 



Elementary Dynamics : \ Text-book for Engineers. 

 By J. W. Landon. Pp. viii+246. (Cambridge: \t 

 the University Press.) 10.?. M. net. 



.Memoirs of the Geological Survey. Summary of 

 Progress of the Geological Survey "of Great Britain 

 and the Museum of Practical Geology for 1919. 

 Pp. 70. (London : E. Stanford, Ltd.) 2k. 6i. net. 



Companions : Feathered, Furred, and Scaled. By 

 C. H. Donald. Pp. ix+159. (London: John Lane'; 

 New York : The John Lane Co.) 7.?. net. 



Essentials of Physiology. By Prof. F. k. Bain- 

 bridge and Prof. J. A. Menzies. Fourth edition. 

 Pp. viii + 497. (London : Longmans, Green and Co.) 

 14s. net. 



Diary of Societies. 



TIWRSDAV, October 21. 



IloiAL SociHY OF JliajiciNE (Dermatology Section) at 5 



liorAt Abhonautic.il Societt (Dt Uoyal SocietT of .-Irts), nt S 30 — 

 S(|uiul.-Ldr. K. M. Hill: A Comparison of "tin Flving- Qualiti«s 

 of Single- and Twin-engined Aeroplanes.— C. Baker: Nisht 

 Flying. 



I.vsTiTUTiON or MiNiNO AND METALLrHGT (at Geological Sooietv) 

 Special (.encral Jleeting, at 5.30; at 5.43.— J. Morrow Campbell: 

 IJie Ori(,'m of I'rimary Ore Deposits. 



CHiLD^STCDr SociETi (at Royal Sanitary Institute), at 6 — Dr 



A. R. Abelson: A Psychological Study of the Delinquent Child. 



FRIDAY, October 22. 



RoTAX CotLEGE Or SrEOEONs Or England, at 5.— Prof A Keith- 

 Demonstration on the Contents of the Museum 



ROTAL .SoclKTit OF MtuiciNE (Study 01 Disciise in Children S.c 

 tion), at 5.. 



Institution or Mechanical Eitoiireras, nt 6.— Capt, H Rinll 

 Sankey : Presidential .\ddress. 



HorAL Photoorafhic Societi of Great Britain, at 7.— F. Martin- 

 Duncan: Birds and Beasts from many Lands. 

 ^^1?" rNSTiTiTios OF Kngixeehs (.it Cn.Kton Hall), at 8— A H 

 Pitt; Impulse Turbines. '>■■ n. 



'*cT'"-Qo^"T .'"' X"""",'"' Medicine (at 11 Chandos Street, W.l), 

 at 8.30.— Prof. W. lorke: The Present Position of Trrpan- 

 osomia*is Research. - ' 



MOtlDAY, October 25 



F.AHAB.1T SOCIETI AND PHYSICAL SOCIETr OF LONDON (at Institution of 

 Jfechanical Kngineers), ot 2.30.— Joint Discussion on The Phvsics 

 and Chemistry of Colloids and their Bearing on Industrial Oues- 

 ruZ- , " V r,''!', ?,^<'<lbci«.: A Short. Survey of thi. Phvsics and 



tliemistry of Colloids. Discussion on Emulsions and Ennilsifica- 



tion Opener: Prof. F. G. Donnan.-W. Clayton: Emulsion 

 Iroblcms in Margarine Manufacture.-S S. Bhatnagar: Reversal 

 of Phases in Emulsions and Precipitation of Susiwnsoids In- 



Electrolysis: an Analogy.. Discussion on Pliysicnl Properti<Ai 



of Elastic Gels. Openers: E Hatschek and Prof. H. R. Procter 

 — h. C. Bradford : The Reversible .Sol-gel Transformation — 



Dr. J. O ^^. Barratt,: The Structure of Gels. Discussion on 



Glass and PyroBols. Opener: Sir Herln-rt Jackson. Discussion 



on Non-Aqueous Systems, (a) NHnceUnlote. Opener- Sir 

 Robert Rol»rts«n.—F. Sproxton : Non-Aqueous Colloid System, 

 with Sponnl Reference to Nitrocellulose— Dr. G Barr and 

 I.. L. Bircumshaw: The ViseositV of Some Cellulose .\eetate 

 Solutions, (b) Itnhber. Opener: B. D. Porritt: The Action of 



J.ight on Rubber. Discussion on Precipitation in Disperse 



Systems. ODcners : Dr. R. C. Tolman «nd Dr. R. S Willows — 

 J N. Mukher.iee: The Origin of the Charge of a Colloidal 

 Particle and its Neutralisation b-v Electrolytes.- W. Clayton- 

 Coagulation nf Inotgnnie Susncnsions bv " Enuilsions.-^Dis- 

 eussmn on Catanhoresis and F,lectro-endo«mo,s*. Opener: Prof. 

 ^V ,V^- I'o'^^*'';.- I>r. W. Ormandr: Some Practical Applications 

 ot Electro-endosnio.se and Cataphoresis. 



ROTAL COLLEOK OF SCBOEON'S OF ENGLAND, at 5— Prof, S. O. Shat- 

 tock : Demonstration of Pathological Specimens in the Museum 



RorvL SOCIETY OF MEDICINE (0<lontology Section), at 8.— W, H, 

 Dolamore: The Importance nf Clinical Observation in Dental 

 Surgery l Presidential Address). 



Medical Societt of London, at 8 3fl.-Prof. .1. B. Leathes and 



others: Discusaion on The Determination of Degree of Renal 



Function. 



TUESDAY, OcTOBiK 36. 

 Sociological Societi (at 65 Bclgrnvc Rondi, at S.U.— H. Carter 



and R. Vnwin: Impressions of the New Germany. 

 RotAi .Socitn or Medicine (Medicine Section), at 5.30 —Dr. F. 



Parkes Weber: The Differentiation of the fiecondnry Forms of 



Pol.veythiemia Rubra. — l>r. Paterson : Note* on a Case ot 



Transient Polycythemia in a Child. 

 RorAL .^NTHBOPOLOoiCAi INSTITUTE, at 8 1.1.— ReT. R. A. LorraJD : 



The Wild Heud-hunting Tribes of Lnkherland : their Mannnrt 



and Customs. 



WEDNESDAY. October 27. 

 iNUTiTrr* or .^ejionautical Enoirfebs Int lloval College of Science), 



at 7.4.I.— Col. N. T. Bclaicw : The Structure of Steel. 



THVRSDAY, October 28. 



Chemical Societt (at. Institution of ifeehanical Engineer^/. :.! b. — 

 Dr. if. O. Forster: The Emil Fischer Memorial Ix-cture. 



Abebnethian Societt (at St. Bartholomew's Hospital), at 8.30.— 

 Sir St. Clair Thomson: Recollections of Joseph Lister by one 

 of his House-aurgeons. 



ROTAL Societt or Medicine (Urology Section), at 8.30.— Sir Thomas 

 Horder : The Treatment of Sttb-acute Nephritis by Deeapsnla- 

 tion ; with nn Account of Four Cases. — T^ Bonney : A New Opera- 

 tion for Nephroptosis. 



FRIDAY, October 29. 



RoTAL Geoorafhicai. Societtt (at the .Volian Hall), at 5— T, A. 

 Barns: In the Land of the Okapi and the Gorilla, 



Rotal College or Surgeons of England, at 5. — Prof, .'. . Keith: 

 Demonstration on the Contents of the Mu.seum. 



Institition of Mechanics, E.ngineers (Informal Meetingi, at 7. 



Royal I'kotoorathic Society of Gbeit Britain, at 7, — H, W. 

 Bennett: Winchester: The Cathedral, the School, and the Hos- 

 pital of St. Cross. 



Chemical Indusibt Club (at 2 VVhitehall CJourt), at 8. — Annoal 

 Meeting. 



Rotal Societt of Medicine (Epidemiology and St«te 'ifedicine 

 Section), nt 8.30.— Dr A. K. Chalmers: The Function of the 

 Isolation Hospital in a General Scheme of Hospital Provision. 



CONTENTS. PAGE 



Methods and Aims of Anthropology 233 



The Durability of Maritime Structures. By Dr. 



Brysson Cunningham ... 255 



Tropical Disease and Administration. By W. G. K. 236 



Yearbooks of Universities 237 



Encyclopaedic Chemistry. ByJ. R. P 238 



Our Bookshelf 239 



Letters to the Editor : — 



" Moniiai." — Lt.-Col. H. H. Godwin-Austen, 



F.R.S 241 



Ewinq's "Thermodynamics." — Sir J. A. Ewing, 



K.CB., F.R.S 242 



A Diver's Notes on Submarine Phenomena. — Lieut, - 



Comdr. G. C. C. Damant 242 



Old Irish M.ips. — T. Sheppard 243 



A Visual Illusion.— Dr. C, S. Myers, F,R.S. ; Dr, 

 A. \A^ohlgemuth ; Capt. C. J. P. Cave .... 243 

 Possible New Sources of Power Alcohol. By C. 



Simmonds 244 



The Natural History of Everyday Creatures. 



/Illustrated.) By J. A. T 246 



Obituary : — 



Prof. Yves Delage. By Prof. J. Arthur 



Thomson . 2t8 



249 



NO. 2660, VOL. 106] 



Notes 



Our Astronomical Column : — 



The Nova in Cyijnus . 



Connection of Planetary Nebulae with Helium Stars . 

 Our Conceptions of the Processes of Heredity. IL 



[Ipit/i Diagram.) By Miss E. R. Saunders, F.L.S. 

 The Air Conference, 1920. By R. T. G. ... 

 Annual Report of the Meteorological Committee. 



By E. M. W 



Proposed British Institute for Geodetic Training 



and Research. By Dr. E. H. Griffiths, F.R.S., 



and Major E. O. Henrici 



The Imperial College as a University of Science 



and Technolosy . . 



Agriculture in Egypt and Cyprus 263 



Heredity and Eugenics 264 



University and Educational Intelligence . . . 264 



Societies and Academies 266 



Rooks Received 267 



Diary of Societies . . 268 



254 

 2S4 



255 



260 



25 1 



262 



