428 



NATURE 



[November 25, 1920 



435- Part iii. : Synthesis. Pp. yii+378. (London : 

 E. Arnold.) i8i-. net each vol. 



Australasian Antarctic Expedition, 1911-14. Scien- 

 tific Reports. Series C : Zoology and Botany. Vol. v., 

 part 7 : Ostracoda. By F. Chapman. Pp. 48+ 

 2 plates. 4s. -jd. Vol. v., oart 8: The Insects of 

 Macquarie Island. By Dr. R. J. Tillyard. Pp. 35. 

 us. gd. Vol. vii., part i : Mosses. By H. N. Dixon 

 and the Rev. W. W. Watts. Pp. 9. 15. Vol. vii., 

 part 2 : The Algae of Commonwealth Bav. By 

 A. H. S. Lucas. Pp. i8+g plates. 35. 6d. Vol. vii.', 

 part 3 : The Vascular Flora of Macquarie Island. 

 Pp. 63. 6s. 6d. Vol. vii., part 4 : Bacteriological 

 and other Researches. Bv Dr. .\. L. McLean. 

 Pp. 130+ 1 1 plates. i6s. (Sydney: W. Gullick.) 



Diary of Societies. 



THURSDAY, Novembeb 25. 



Eoi-AL SociEii, at 4 — Special General Meeting to consider the 

 Annual Keport of Counoil,~At 4.S0.— Prof. L. Hill • The 

 Growth of Seedlings in Wind.— Prof. P. T. Herring: The 

 Effect of Thj-roid-fceding and of Thyro-parathyroideotomy npon 

 the Pituitrin Content of the Posterior Lobe of the Pituitary 

 the Cerebrospinal Fluid, and Blood.— \V. A. Jolly: Reflex Times 

 in the South African Clawed Frog.— Prof. J. A. Gunn and R. 

 St. A. Heathcote : Cellular Immunity. Observations on Natural 

 and Acquired Immunity to Cobra Venom.— L. T. Hogben : Studies 

 on synapsis. III. The Nuclear Organisation of the Germ Cells 

 in Ltoellula depresaa. 



Chadwick Public Lectures (at the Jfedioal Society of London), 

 at o.lo.— Prof. J. B. Farmer : Some Biological Aspects of Disease. 



iNSTiTUTio.v or KEECTnicAL Engiseees (at Institution of Civil 

 Engineers), at 6.— W. B. M oodhouse : The Distribution of Eleo- 

 tricity.— R. O. Kapp : Some Economic Aspects of E.H.T. Dis- 

 tribution by Underground Cables. 



Concrete Institute, at 7.30.— E. F. Etohells: Presidential Ad- 

 dress. 



^■^.^ Exploration Society (at Royal Society), at 8.30.-Prof. G. 

 Elliot Smith : The Royal Mummies. 



RoTAL Societ* of MEDICINE (Urology Section), at 8.30. 

 FRIDAY, NoTEMBEK 26. 



RoiAL SociETl or Medicine (Study of Disease in Children Sec- 

 tion), at 5.— Dr. D. Drury : Malformation of the Face, Ear Eye 

 and Hand occurring in an Infant. ' 



Institution or Electbical Engineers (Students' Section) (at the 

 City and Guilds Technical College, Leonard Street, E.G.), at 

 6.30.— A. J. C. Watts : Electricity and the Paper-making In- 

 dustry. 



Optical Society and Physical Society of London (at Imperial 

 College of Science and Technology), at 7.— The Making of Re- 

 flecting Surfaces, (a) Technical Methods of Production.— R. 

 Kanthack : Description of the General Features of Published 

 Processes.— H. N. Irving: Methods of Silvering.— J. W. French- 

 Workshop Notes on Silvering— F. EUorman and H. D. Babcook - 

 The Slivering of Glass Reflectors— J. Rheinberg : Platinum Re- 

 flecting Surfaces on Glass by the Burning-in Prooess.— R. S. 

 Whipple : The Silvering of Glass and Quartz Fibres.- H. A. 

 Hughes : Demonstration of a Silvering Process.— C. W. David- 

 son: The Silvering of a Large Reflector, lb) Reflecting Powers 

 of Surfaces, etc.-.!. W. T. Walsh : The Photometric Measure- 

 ment of the Reflecting Powers of Mirrors.- Prof. Fery • A Note 

 S? ^"'A ,J'«'''n»n«"t Mirrors for Reflecting Heat Radiations.— 

 VV . G. Collins : Rustless Steel Mirrors.- R. W. Cheshire or Dennis 

 laylor: Note on Increasing the Transmitting Powers of Sur- 

 faces.— F. Simeon : Demonstration of Apparatus used for Pro- 

 ducing Mirrors by Cathodic Bombardment. 



Junior Institution of Engineers (at Caxton Hall), at 8.— C. 

 Mourant : Reinforced Concrete Coal Bunkers and Silos 



Royal Society or Tropical Medicine and Hygiene (at 11 Chandos 

 Street. W.), at 8.— Resumed Discussion on Paper by Prof. W. 

 Torke : The Present Position of Trvpanosomiasis Research — G 

 Dudgeon ; Some Important Tropical Fruit Foods. 



Royal Society of Mrdicine (Knideminlogv and State Medicine 

 Section) , at 8.30— Dr. A. Chanlin : Measures for Preserving the 

 Health of Seamen on Board Ship. 



UOND.A.Y, NorEMBER 29. 



The Institute op Actuaries (in Staple Inn Hall), at 5.— Sir Alfred 

 Watson ; Address. 



IN.STITUTION or ELECTRICAL ENGINEERS (Informal Meeting) (at Char- 

 tered Institute of Patent Agents), at 7.- A. F. Harmer and 

 Others : Discussion on Electrical Tr»ns.mission on Petrol 

 Vehicles. 



Royal Institute or British Architects, at 8.— Professional Ques- 

 tions. 



Royal Society op Arts, at 8.— A. Chasten Chapman : Micro-organ- 

 isms and some of their Industrial Uses (Cantor Lecture). 

 TUESDAY, November 30. 



Royal Horticultural Society, at 3. 



Royal .Society, at 4.— Anniversary Meeting. 



Royal Society op Medicine (Tropical Medicine Section), at 5.— 

 Dr. P. G. Rose : The Incidence of Filariasis in British Guiana. 



Institution op Civil Engineers, at 5.30. 



Royal Photographic Society op Great Britain (Technical Meet- 

 ing), at 7.— G. C. Weston: Dark Room Dodges. 



NO. 2665, VOL. 106] 



WJSDXESVAT. DfcnoBi 1. 



Geolooicu Society or Lo.ndox, at 5.15. — Special Oescral Meeting. — 

 At 5.30. — Ordinary Meeting. — Dr. K. 6re«nly : An Molimn Pleisto- 

 cene Deposit at Clevedon, Somerset. 



Society op Public Analysts aitd othkb Avalttical Chehists (ftt 

 Chemical Society), at 8.— R. T. Wadsworth : Estimation of 

 Theobromine. — B. 8. Evans : A New Prooess for the Estimation 

 of Small Quantities of Chromium in Steels.— P. T. and 

 F. H. Dupr(^> : Some Notes on the Reaotions between Fulmioftte 

 of Mercury and Sodium Hyposulphite. 



Royal Society or Arts, at 8.— Miss L. P. Pesel : Embroidery: 

 National Taste in relation to Trade. 



TBURSDAT, Decembee 2. 



RoTU Aebonactical SocitTt (at Royal Society of Arts), st 5^- 

 Major O. H. Scott : Airship Piloting.- Flight-Lieutenant F. L. 0. 

 Butcher : Airship Mooring. 



Child-Study Society (at Royal Sanitary Institute), at 6.— Dr. W. 

 Brown : The Value of Suggestion in Rduoation. 



Chemical Society, at 8.— Sir Prafulla C. R4y : Varying Valency 

 of Platinum with Respect to Mercaptanio Radicles.— IT E. Cox : 

 The Influence of the Solvent on the Velocity of certain Reactions. 

 Part II. Temperature CoeflBcients. A Test of the Radiation 

 Hypothesis. — K. J. P. Orton and P. V. McKie : Preparation of 

 Chloropiorin from Picric .\nid and Trinitrotolnenes. 

 FRIDAY, Decmheb 3. 



BoYAi Astronomical Society (Geophysical Committee), at 5.— Dis- 

 cussion : The Cause of Magnetic Storms.--ln Chair : J. H. Jeans. 

 Opener : Prof. F. A. Lindemann. — Other Speakers : Prof. 8. 

 Cliapman, Dr. C. Chree, Rev. A. L. Cortie, E. W. Maunder, 

 C. S. Wright, and Others. 



Institi:tion of Mechanical Engineers, at 6. — Further Discussion 

 on The Human Factor in Industry, by A. Ramsay. 



Institution op Electrical Engineers' (Students' Section) (at King's 

 College), at 6.30.— A. Serner and Others: Discussion on The 

 Modern Tendency to Trusts. Is it Beneficial? 

 SATURDAY, December 4. 



Gilbert White Fellowship (at 6 Queen Square, W.C.I), at 3. — 

 H. J. Elwes : The Primitive Races of Sheep in Great Brit&in. 



CONTENTS. PAGE 



British Dyes 397 



Antarctic Research. By W. C. M 398 



The Physiology of Pregnancy 399 



Roscoe and Schorlemmer's Chemistry. By T. M. L. 400 



Archimedes. By G. B. M 401 



Australian Meteorology. ByJ. S. D 402 



Our Bookshelf . ... 403 



Letters to the Editor: — 



Heredity.— Sir G. Archdall Reid, K.B.E 405 



Sqiialodont Remains from the 1 ertiary Strata of 

 Tasmania. (Illustrated.) — Prof. T. Thomson 



Flynn 406 



The Energy of Cyclones. — Sir Ohver Lodge, 



F.R.S. ; J. R. Cotter 407 



Molecular and Cosmical Magnetism. — Prof. S. 



Chapman, F.R.S. 407 



Physiological Effects of Alcohol. — A. Chaston 



Chapman, F.R.S 408 



Atomic Structure. — Dr. Norman R. Campbell . 408 



The Testing of Balloon Fabrics. — V/. A. Williams. 409 



Luminosity by Attrition. — A. Brammall ... 409 

 Spimnthes auliinnmlis. — Right Hon. Sir Herbert 



Maxwell, Bart., F.R.S 409 



Negro Life in South Central Africa. (Illustrated.) 



By Sir H. H. Johnston, G. CM. G., K.C.B. ... 410 

 Industrial Research Associations. III. The British 

 Cotton Industry Research Association. By Dr. 



A. W. Crossley, C.M.G., F.R.S 411 



Obituary : — 



Lord Glenconner 413 



Reginald J. Farrer 413 



Notes 414 



Our Astronomical Column : — 



Longitude by Wireless 418 



An Apparent Earth-effect on the Distribution of Solar 



Facula: 418 



The Densities of Binary Stars 418 



Science and Fisheries. By H. G. Maurice, C.B. . 419 



Scholarships and Free Places in Secondary Schools 421 



Developments of Wireless Communication .... 422 



Engineering at the British Association 422 



University and Educational Intelligence 424 



Societies and Academies 424 



Books Received 427 



Diary of Societies 428 



