332 



NATURE 



[November 4, 1920 



A Now Method for the Preparation of 2;4-I>ih;droiy- and 

 2:4:4'-Trihydroxy-ben«oplienonc, and some ObserTations rclat- 

 iajf to the Uoeech Ueuction. — W. J. Pope and E. K. Turner: 

 Tripbenylariine and DiphtnylarBenom Salti.— E. H. Atkinson. 

 C. T. Heyoofk, and VV. J. Pope: The Preparation and Phy«ical 

 Properties of Carbonyl Chloride.— H. W. Baasor, C. S. Gibson, 

 and W. J. Pope: Interaction o( Ethylene and Selenium 

 Monoehloride.— Q. Van B. Gilmour: A Study of the Heaotions 

 of Sugars and Polyatomic Aloohols in Boric Acid and Borate 

 .Solutions, with some Anulytical Applications. — F. L. Pyman 

 and L, A. Ranald: The SulphonatJon of Glyoialines.— F. L. 

 Pyman and L, A. Uavuld ; o- and jJ-ToiueneazoglyoxnIines. — 

 M. E. Laing and J. W. McBain : In»«Btij?ntion of Sodium Olcate 

 Solutions in the Three Physical States of Curd, Gel, and Sol.— 

 J. 0. Irrine and E. 8. Steele: The Constitution of Polysac- 

 charides. Part I. The Relationship of Inulin to Fructose.— 

 B. E. Hunt: The Proparntion of Ethvl Iodide.— B. C. Meniies: 

 Action of Sulphur Trioxidc on Aromatic Ethers — O. T. Morgan 

 and II. U. K. Drew: Bescnrches on Residual AiHnitv and Co- 

 ordination. Part II. Acetylacetones of Selenium end Tellurium. 

 — R. B. Drew: The Formation of 2:3:6 Trinitrotoluene in the 

 Nitration of Toluene.— J. N E. Day and J. F. Thorpe: The 

 Formation and Reactions of Imino-compounds. Part XX. The 

 Condensation of Aldehydes with Cyanoacetamide.— O. Becker and 

 J. F. Thorpe: The Formation and Stabilitv of Spiro-compounds. 

 Part III. Spiro-compounds from Cyclopentane.— H. Chatto- 

 padhyaya and P. C. Ghosh: Condensation of DimethyldihTdro- 

 resorcin with Aromatic Aldehydes— E. B. Masted: The Influence 

 of Lend on the Cntnlytic ActivitT of Platinum. 

 KoTAi, 8ociF.Tr or Mfdicine (Ohste'trics and Gynseoolosr Section), 

 at 8. — ,1. n. Bnrris and M. Donaldson : Acute InTcrsion of the 

 Uterus. Treatment by Blood Transfusion and Late Replacement. 

 ■-Drs. R. A. Hendry, A. Routh, and J. Adams: Latent Syphilis 

 During Pregnancy. 



FRIDAY, NOTEMBEB S. 



Association or Economic Bioioqists (in Botanical Lecture llcatre 

 Imperial College of Science), at 2.30.— Prof. F. W. Oliver- The 

 Reclamation of Waste Land by Botanical Means— Dr. E J 

 Bnssell : The Reclamation of Waste Land by Agricultural Means 

 ROTil SociCTT or MlDlciNE (Laryngology Section) at 4 

 •OBOPHrsicit Committee (Royal Astronomical Society), at 5 — Dis- 

 cnssion on the African Aro and Meridian, to be opened bv Col 

 H. G. Lyons, and continued by Sir Charles Close, Col. E. M. 

 Jack, A. R. Hinks. C. G. T. McCaw, and others 



JiEWCOMEW SOCIETI TOE THE StCDT OF THE HlSTOET OF ENOIIfEEEINQ 



AND lECHNOioor (at the Patent Office Librarv), at 6.30 —E. W 



Hulme : Introduction to the Literature of Historical Engineering. 

 iNSTirrTioN op Mech.nicai, Engineers, at 6 -Sir Richard T. Glare- 



orook: Limit Gauginsr (Thomas Hawkslov Lecture). 

 JCTTIOB Institution or Enoineebs (at'Caxton Hall), at 8— 



Jl. Cooper: Some Further Locomotive History. 

 ^*'W,^^"7 °' Medicine (Ansesthetios Section), at 8.30.- Dr. 



U. W. Buxton: The Psychology of Anesthesia. 



UOSDAT, NOTBMBEB 8. 



BiocHEMiCAi. Society (at Imperial College of Science) 

 ROTiL SociETT OF MEDICINE (War Section), at 5 30 



-!^^'p^!!. °'Mf?*!'iCAL Enoineebs (Graduates" Meeting), at 7. 



— C. Poole: Electric and Hydraulic Elevators 



pVe'sidentTarAX'ss'""'" °' '^^^^ «""""• '^' ^-^-"^^ 

 ''^ 8t?^t)"a? /°^n'" if University of London Club, 21 Gower 



fpr^i!l'entiaT~A°dressT- ^ '"'*='' *"" ^'"^ ^"" Reversible? 

 lovI,"n^n„Jr"^"=°''' °* ®-^- Wilmot: Presidential Address 



The Hon r A"«^°""l,'** ^"l'"" Hall), at 8.30.-Brig -Gen 

 ii.r;„f„. S' ^- ^- Bruce: Mount Everest. 

 ^lfnictrM«Vng.''°™°'' ^"^ " ^'"^»<^- Street. W.l), at 8.30, 



TUESDAY. NoTEMBEB 9. 



BoiAi CoiiBGE or Phisicians OF London, at 5.— Dr E G Browne 

 Arabian Medicine after Avioenna (Fit.Patrick Leotmi) 



SociotoolCAT Soc.ETr (at 65 Belgrave RoaT S W 1) at 5 15 

 Mrs \. Branford: Theology and Sociolo^^. '' ^■^^■~ 



il I?* .Tn^as and A. F. Hall mond : A Bcfractometer for 

 the Determination of Liquid Mixtures Keiractometer lor 



•Oi^'sTrnrT""?""' SociETT, at 7.-Presidential Address 



ImwraT^llei''n'-"°''=°';j™ """'• Co'««B of Science (at 

 dan"? Th?Na«o?.^ =„";-^°"^*' Kensington), at 8.-Tisoount Hal- 



Po^r, »„™ """"""I'sation of Universities. 



''The Ori™n°o7 Hy'^*rVamy"""' "' '''-'''■ ^- ^- «• «-"- 



^E%%''nl'^^°'J'^'"?'^ (Psychiatry Section), at 8.30.-Dr. 



Address) ^'^^ °* ^«''*»^ Hygiene (Presidential 



WEDNBSDAT, Notembbb 10. 



^Tm ^P^'YfiW ""'"'^ (Surgery: Proctology Sub-section), at 

 r.^~r' mV residential Address.— L. Mummerv ■ The 



In?t'S"t,o^ Ir^A*^*"* "' *^t ^"""P^ "' «>* K*'^"™ in Adultl 

 rTl vlJ^ AcTOMOBiiE ENoiNEEBa (at Institution of Mechanl- 

 ^no^^oHv '•=?*,*»-' "■ « Dickenson: Some Notes on the 

 itoport of the Steel Research Committee. 



NO. 2662, VOL. 106] 



THURSDAY, NoTiiun 11. 



"t'i" .S'^'f^'. *' ^•,30-^r'""''^ ?op.r.:-Dr. W. Q. Bidewoodi 

 lh« taiciiioation of the \ertebral Centra in Sharks and Uaya — 

 i'''»i^- '^9'nP''"': Studies in the Mechanism of Enaymc Aotion 

 I. Rite of the Reaction ol the Medium in fixing tuc ODtimum 

 Temperature of a Fern*ent-C. H. KeUaway : The Effect of 

 certain Dietary Deflciencies on the Suprarenal Glands —£ J 

 Collins: The Genetics of Sex in Funana hugromelrKa ' ' ' 



L0.VD0.V Mathematical Societt (at Royal Astronomical Society), 

 at 5. — Annual General Meeting, 



RorAi SociEir or Medicine, at S-8ir Almroth Wright: Medical 

 It© s€8 rcli • 



RoiAL COLLEGE OF PHYSICIANS OF LONDON, at 5.— Dr. E G Browna ■ 

 Arabian Medicine after Avioenna (FitiPatrick Lecture) 



BoiAL College or Suboeons of England, at 5.- Sir D'Arcy' Power • 

 The Education of a Surg«on under Thomas Vioary (Thonuu 

 Vicary Lecture) ' \i"»™». 



INSTITITION OF Electeical ENGiNttBa (at Institution of Civil 

 Engineers), at 6.— LI. B. Atkinson: Inaugural Addrew 



Optical Societi at 7.30.-Major E. O. Henrioi : The Use of In- 

 ^rnal Focussing Telescopes for Stadia Surveying.— Dr E. J. E 

 Hanson: Visual Fatigue and Eye Strain in the U»e of Tele- 

 scopes. 



ROTAL Societt OF Medicine (Neurology Section), at 8.3I).-Dr. H. 

 ilead and Others: Discussion on Aphasia. 



FRIDAY, NOTEHBEB 12. 



Institute of Chemistbt, at 4.— To Receive Report of the Extra- 

 ordinary General Meeting of October 28 and confirm the Reso- 

 lutions and By-laws passed thereat. 



Physical Societt of London (at Imperial College of Science), at 6. 

 —Dr. F. S. Gouchcr: lonisation and Excitation of Radiation by 

 Electron Impact in Helium.— J. Guild: Fringe Systems in Un- 

 compensated Interferometers —J. Guild: The Location of Inter- 

 ference Fnnges.—Dr. G. Barr: A New Relay for Moderately 

 Heavy Currents. 



ROIAL ASTBONOMICAL SOCIETT, at 5. 



RoiAL SOCIETT OF MEDICINE (Clinical Section), at 6.30— Dr. F 

 Parkes Weber: Chronic Myeloid Leukemia- Death from Acnte 

 .^^UKmia due to Massive Haemorrhages (Haematoraata). Simulation 

 of Slight Pyuria by Leukemic Doling in the Urine —Z. Cope: 

 Diathragmatic Shoulder Pain. 



Institution of Mechanical Enotnp.ebs, at 7— Informal Meeting. 



ROTAi SOCIETY OF MEDICINE (Ophthalmology Section), at 8 90.— 

 Pn' '.■Taylor: Some Neurological Aspect* of Ophthalmic Case* 

 (Presidential Address).— P. Smith: The Blood-vessels in the 

 Eye of the Ox. 



CONTENTS. 



PAGE 



Symbolic Lanijuage of Science. By Sir Napier 



Shaw, F R.S. . ... 301 



The History of a Mind. By A. S. M. . 301 



Applied Plant Ecoloey. By M. D 304 



The Food Problem of the United States. By Dr' 



'E.J. Russell, F. R.S 305 



Theory of Electric Cables • • 306 



The Carbon Compounds. By A. W. S 107 



Our Bookshelf [ ! ! 307 



Letters to the Editor: — 



Light Produced by Rubbing Quartz Pehbles Together. 



—Sir E. R.y Lankester, K.C.B , F R.S. . 310 



Chemical Warfare, the Universities, and Scientific 



VVnrkers. — Prof. Frederi. k Soddy, F. R S. . 310 

 British Labontory and Scientific Glassware. — Prof. 

 W. M. Bayliss, F. R.S. ; Frank Wood . 310 



Crystal Growth and Recrystallisation in Metals. 



(Illustrated.) 312 



The New Star in Cygnus. (Illustrated.) By Major 

 W.J. S. Lockyer .... . . ' 3,, 



Obituary:— 



Dr. Hermann Struve 316 



Alfred Lionel Lewis ... -117 



Notes .".■.' '.'.;. 317 



Our Astronomical Column : — 



Comet.s ^22 



Mount Wilson Observations of Capella . . . . 322 

 Variation in the Light of Jupiter ... . . 322 



Educational Science. By Sir Robert Blair. LL.D. 32^ 

 Popular Relativity and the Velocity of Light. By 



Sir Oliver Lodge. F R.S . .... 325 



Emil Fischer's Contributions to Organic Chemistry. 



By Dr. M. O. Forster, F. R. S. . 326 



The Physics and Chemistry of Colloids and their 



Bearing on Industrial Questions 327 



University a"d Educational Intelligence . . 329 



Societies and Academies ... .... 330 



Books Received 331 



Diary of Societies 331 



