492 



NATURE 



[January 8, 1920 



DIARY OF SOCIETIES. 



THURSDAY, Iamtarv 8. 

 RoVAL Aeronautical Societv (at the Royal Society of Arts), at 3.— 



Major H. E. Wimperis : How Airmen Find Their Way (Juvenile 



I^^cture). 

 Royal Institution or Great Britain, at 3.— Prof. W. H. Bragg: 



The World of Sound : Sounds of the Sea (Christmas Lectures). 

 Physical Societv of London (at Exhibition of Apparatus, in conjunction 



with the Optical Society, at the Imperial College of Science), at 4. — 



Prof. F. J. Cheshire: Some Polansation Experiments; at 8. — Prof. 



Rankine : The Use of Light in the Transmission and Reproduction of 



Speech. 

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



at 6.-—}. Shepherd: Failures of Turbo-Generators and Suggestions for 



Improvements. 

 Optical Society, at 7*30. 

 Institution of Automobile Engineers (at 28 Victoria Street), at S. — 



T. Clarkson : Steam Vehicles, 

 Royal Society of Medicine (Neurology Section), at 8.30.— Dr. F. M. R. 



Walshe : Forms of Peripheral Neuritis among Troops Serving with the 



Egyptian Expeditionary Force, 1915-1919. 



FRIDAY, January g. 

 ■Geographical Association (at the London Day Training College), at 2. 



—Prof. R. N. Rudmost P>rown : Spitsbergen.— At 6.— Sir Charles P. 



Lucas: Islands, Peninsulas, and Empires (Presidential Addres'.). 

 Royal Astronomical Society, at 5.— J. K. Fotheringham ; The Longitude 



of the Moon from 162710 1918.— Prof. H. H Turner: The Suggested 



Decrease of Period of Stars in Phillips's Group II., with particular notes 



on R Hydr;«, S Tauri, U Herculis, R Aquilae, x Cygni, S Cygni. and 



S Coronje Boreali-.- Dr. J. L. E. Dreyer : The Original Form of the 



Alfonsine Tables.— C. Davidson and W. V. Woodman: An Equatorial 



Mounting for Eclipse Observations. 

 Royal Socif/jy of Medicine (Clinical Section), at 5.30. — Sir Anthony 



Bowlby : The Application of War Method -^ to Civil Practice. 

 MalaC(>lO(;ical Society of London (at the Linnean Society), at 6. — 



Dr. S. S. Berry: A New Species of Mitra from California.— Dr. A. E. 



Boycott : I.ocal Variation in Size of Clntisilia bidentaia and Ena obscura. 



— H- C. Fulton : MoUuscan Notes. IV. 

 Philological Society (at University College), at 8.— Dr. W. Perrett : 



The Perception of Sound. 



SATURDAY, January 10. 



Geographical Association (at Regent Street Polytechnic), at 10.30 a.m. 



— Capt. C. E. Hodges: Demonstrationof the Value of the Cinematograph 



in Geographical Teaihing. 

 ■Geographical Association (at the London Day Training College), at 3. 



— M. i^e Carle S. Salter : Rainfall as a Geographic Function. 

 RovAL Institution of Great Britain, at 3. — Prof. W. H. Bragg: 



The World of Sound : Sound in War (Christmas Lectures). 



MONDAY, January 12. 

 Royal Geogravhical Society (at Lowther Lodge), at 5.— Capt. H. 



Thomas: Geographical Reconnaissance by Aeroplane Photography. 

 Institution of Mechanical Engineers (Graduates' Association), at 8. 



— A. R. Munro : Right-angle Belt D'ives. 

 Surveyors' Institution, at 8. — E. M. Konstam and C. H. J. Clavton : 



Land Drainage from the Administrative and Engineering Points of View. 



TUESDAY^ January 13. 



Royal Horticultural Society (at Vincent Square), at 3. 



RovAL Institution of Great Britain, at 3. — Sir John Cadman : 

 Modern Development of the Miner's Safety Lamn. 



Institution ofCivm Engineers, at "^.30. — J. Mitchell : Whitby Harbour 

 Improvement.— R. F. Hindmarsh: The De^-isn of Harbours and Break- 

 waters with a View to the Reduction of Wave-action Within Them. — 

 J. W. ?landeman : Wave-action in Harbour Area<; with Special Reference 

 TO Works for Reducing it at Blyth and Whitby Harbours.— W. Simpson : 

 The Improvement of the Entrance to Sunderland Harbour, with Reference 

 to the Reduction of Wave-action. 



Royal Photographic Society and The RSntgen Society (at the 

 Royal Photographic Societv), at 7.— Major G. W. Q. Kaye and Others : 

 Discussion on Some Aspects of Radiology and Rtdiometallography. 



Royal Anthbofological Institute, at 8.15. — Dr. A. C. H addon : The 

 Outrigger of Indonesian Canoes (illustrated by Lantern Slides). 



WEDNESDAY, January 14. 

 Royal Society of Arts, at 3. — L. Pendred : Railways and Engines 



(Juvenile Lecture). 

 Royal United Service Institution, at 3.— Major A. Corbett Smith: 



The Traditions of ihe British Navy. 

 Faraday Society, Royal Microscopical Society, Optical Society. 



and Photomicrogi'APHIC Society, in co-operation with the Optical 



Committee of the British Science Guild (at the Roval Society), .nt 4.30 and 



8.— Sir Robert Hadfield, J. E. Barnard, Sir Herbert Jackson, Prof. F. J. 



Cheshire, Prof. A. W. Porter, and Others : Symposium and General 



Discussion on the Microscope : Its Design. Construction, and Applications. 

 Royal Society of Med'cine (Hi-story of Medicine Section), at 5. — Mr. 



Vivian : Thomas Campion : His Works. — Canon Westlake : The Gild of 



Our Lady of Rouncyval. 

 Institution of Electrical Engineers (Wireless Section) (at the 



Institution of Civil I'.ngineers), at 6.— Capt. H. J. Round : Wireless 



Direction and Position Finding. 



THURSDAY, January 15. 



Royal Institution of Great Britain, at 3. —Dr. R. R. Terry: 



Renaissance Music in Italy and England (with Musical Illustrations). 

 Royal Society of Arts (Indian Section), at 4.30. 



Linnean Society, at 5. — Dr. B. Daydon Jackson; Slcthods of Botanic 

 Illustration during Four Centuries (Lantern Lecture); 



Chemical Society, at 8. — L. E. Hinkel and H. W. Cremer: The Con- 

 densation of Acetoacetic Ester with /-Dimethylaminobcnzaldehyde and 

 Ammonia.— G. S. Butler and H. B. Dunnicliff : The Action of Alcohol on 

 the Sulphates of Soaium.— M. Nierenstein, C. W. Spiers, and in part the 

 late K. C. R. Daniel : Guarana Tannin. — R. Lessing : Studies in the 

 Composition of Coal : (r) The Behaviour of the Constituents of Banded 

 Bituminous Coal on Coking ; (2) The Min<:ral Constituents of Banded 

 Bituminous Coal.— P. Ray and P. V. Sarkar : The Hydrazino-thio- 

 cyanates of certain Divalent Metals. - 



FRIDAY, January 16. 

 Institution of Electrical Engineers (Students' Meeting) (at the Ctty 

 and Guilds (Engineering) College), at 7.— J. H. Reyner : The Develop- 

 ment of Automatic Telephony. 

 Royal Institution of Great Britain, at 9.— Sir James Dewar : Low 

 Temperature Studies. 



SATURDAY, January 17. 

 Royal Institution of Great Britain, at 3.— A. Noyes: The Anglo- 

 American Bond of Literature. 



CONTENTS. PAGE 



Water-power and Dartmoor 461 



Radio-communication and the Thermionic Valve. 



By A..R 462 



Catalysis. By W. C. McC. L 463 



The Neglected Study of Probabilities. By Prof. 



G. H. Bryan, F.R.S 464 



The Study of the Familiar 465 



Vaccine-Therapy . 466 



Our Bookshelf . 467 



Letters to the Editor: — 



The Deflection of Light during a Solar Eclipse. — 



Sir Arthur Schuster, F.R.S 468 



The Magnetic Storm of August 11-12, 1919.— 



Dr. C. Chree, F.R.S 468 



RelativityandRadio-activity.— Prof. J. Joly, F.R.S. 468 



British Botanic Gardens and Stations.— Dr. W. E. 



Freeman ; The Writer of the Article . . 469 



Natural History of South Africa. (Illustrated.) . . 469 



Industrial Research. By A. P. M. Fleming .... 470 



Sericulture in India 47' 



Sir William Osier, Bart., F.R.S. By C. A 472 



Notes ... 474 



Our Astronomical Column : — 



The Birth of the Moon 479 



Distances of the Stars of Type F 479 



Absolute Magnitude as a Function of Colour . . 479 

 Cross-circulation as a Physiological Method. By 



Prof. W. M. Bayliss. F.R.S 479 



Nickel-Chromium Steel Forgings. By H. C. H. C. 480 



Cephalodiscus and the Archichordates. ByW. CM. 481 

 The Ithaca Agricultural Experimental Station. By 



Dr. E. J. Russell, F.R.S 482 



The Rainfall of the United States. By C. H. ... 483 



Retirement of Sir Oliver Lodge 483 



The Chippawa-Queenston Hydro-electric Deve- 

 lopment Scheme. By Dr. Brysson Cunningham. 483 

 The Organisation of Chemical Industries . . 484 

 Geology at the British Association . . .... 484 



Economics at the British Association 485 



Engineering at the British Association 486 



Anthropology at the British Association ... 487 



Rewards for Medical Discovery • . 488 



University and Educational Intelligence . v 489 



Societies and Academies ... ... 490 



Books Received . . . • 49' 



Diary of Societies 49^ 



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Editorial Communications to the Editor. 



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