;6o 



NATURE 



[November io, 192 i 



EoTAi. Photographic Societi, at 7.— F. R. D. Onslow; Some Sea 



Birds. 

 lixiMixATixo Engineering Societt (at Royal Society of Arts). 



at 8.— Reports on Progress during- the Vacation, and DeTelop- 



ments in Gas Lamps and Electric Lamps and Lig-htingr Appliances. 

 RoTAL Anthropological Institute, at 8.15.— Miss M. Murray : Recent 



Exoayations in Malta. 

 Medico-Legal Societt (at 11 Chandos Street, W.l), at 8.30.— Dr. T. 



Good : Nature vcrBUi Law. 



WEDNESDAY. November 16. 



RoTAL HoRTiciiTLRAL SociETr, at 10.30— 5.30.— International Potato 

 Conference. 



RoTAL SociF.TT OF ARTS, at 4.30.— T. H. Lyon : Modern Buildings in 

 Cambridge and their Architecture. 



RoTAL Meteorological Societt. at 5.— Dr. H. Jeffreys : The 

 Dynamics of Wind.— N. K. Johnson: The Behaviour 'of Pilot 

 Balloons at Great Heights.— C. J. P. Cave : The Cloud Pheno- 

 menon of November 29, 1920. 



Nfwcomen Socibtt (at Caxton Hall), at 5— C. P. D. Marshall: The 

 Liverpool and Manchester Railway. 



Entomological Societt or London, at S. 



Royal Microscopical Societt. at 8.— G. Patchin : The Micro-examina- 

 tion of Metals with Special Reference to Silver. Gold, and the 

 Platinum Metals.— R. L. Prink: The Practical Value of the 

 Microscope in Glass Manufacture.- W. C. Crawley and Dr. H. A. 

 Baylis : Mcrmis Parasitic on .\nts of the genus Lasius. 



THURSDAY. November 17. 



RoTAL HoRTiciLTrRAL SOCIETY, at 10— 6.— International Potato Con- 

 ference. 



Rotal Society, at 4.S0.— Probable Paperst. —lUior P. A. MacMahon 

 find W. P. D. MacMahon : The Design of Rpoeating Patterns.— 

 Prof. J. W. Nicholson : A Problem in the Theory of Heat Con- 

 duction—Prof. C. H. Lees : The Thermal Stresses in Spherical 

 Shells Concentrically Heated.- R. A. F'sher : The Mathematical 

 Foundations of Theoretical Statistics.- F. P. White : The Diffrac- 

 tion of Plane Electromagnetic Waves bv a Perfectly Roflo^+ino- 

 .Sphere.— Prof. C. V. Raman and G. X. Sutherland : The Whisper- 

 ine Gallery Phenomenon. 



LiNNEAN Society or London, at 5. 



London Mathematical Society (at Royal Astronomical Society), at 

 5 (Annual General Meeting). 



Royal Aeronautical Society (at Royal Society of Arts), at 5.30.— 

 Col. F. Searle : Requirements and Difficulties of .A.ir Transport. 



Institution of Elfctrtcal Engineers, at 6.— E. S. Byng : Telephone 

 Line Work in the United States. 



Institution or ^Iintng and Metallurgy (at Geological Society), 

 at .").30.— H. P. Collins : The Igneous Rocks of the Province "of 

 Hnelva and the Genesis of the Pvritie Orebodies. 



Chemtcal Society, at 8.— H. Bnrton and J. Kenner : The Influence 

 of Nitro-grouns on the Reactivity of Substituents in the Benzene 

 Nucleus. Part. V., Heteronncleal Dinitro-derivatives. — V. Ch-'i. 

 lenger and .T. P. Wilkinson : Organo-derivatives of Bismuth. 

 Part v.. The Stabiiitv of Halogen, Cyano-, and Thiocyano- 

 ilcr'vativs of Tertiarv Aromatic Bismuthines. — F. Challenfer nnd 

 L. R. Ridgway : Organo-derivatives of Bismuth. Part VI.. The 

 Preparation and Properties of Tertiary Aromatic Bismuthineg 

 and their Interaction with Organic and Inorganic Halogen Com- 

 pounds. 



FRIDAY. November 18. 



Royal Horticultural Society, at 10.30—1.30. — International Pot*to 

 Conference. 



.Association of Economic Biologists (in Botanical Lecture 'Theatir, 

 Imperial College of Science and Technoloev), at 3. — Dr. E. J. 

 Butler and others : Discussion : Meteorological Conditions and 

 Disease. 



Institution of Mechanical Engineers, at 6. — Dr. E. H. Salmon : 

 The Machinery of Floating Docks. 



SATURDAY. November 19. 

 British ^rTCOLOGicAL Society (in Botany Lecture Theatre, Univer- 

 sity OoUeee). 

 Physiological Society (at St. Bartholomew's Hospital). 



PUBLIC LECTURES. 



(.4 yiumher in bracietn ivdieatpx the number of a lecture 

 in a series.) 



TmTTtSDAY. November 10. 



Imperial College of Science and Technology, at 3. — W. Bateson : 

 Recent Advances in Genetics (2). 



University Cotlfge. at 5. — Prof. .J. E. G. De Montmorency : 

 European Feudalism : Its Vnriat'on and Dpcav (2). 



King's College, at 5.30.— H. W. Fitz-Simons -. Bridge Con- 

 struction (3). 



Gresham College, at 6.— Prof. W. H. Wao-stafF: Time-Units (S). 



BiRTBECK College, at 7.30.— Prof . F. Soddy : The Bearing of Physi- 

 cal Science on Economics (1). 



" ' ' FRIDAY. November 11. 



UNivmsiTT College, at 4.30 —Dr. J. C. Drummond : Nutrition (5). 



At 8.— Prof. G. Dawes Hicks : Our Knowledge of the Real 



World (2). 

 iMPFRiAt College of Science and Technology, at 5.30. — Dr. J. D. 



Falconer: The Wonders of Geoloe-v rSwinev Tycctures) (3). 

 GHF.SHAM College: at 6.— Prof. W. H. WagstafF : Time-Units (4). 



■S:.47'r7RD.4r. November 12. 

 Polttechnic. Regent Street, at 10.30.— Prof. H. E. .Armstrong- : 

 The Wonders and Problems of Food. 



MOyDAY. November 14. 

 University College, at 5.— Prof. E. G. Coker : Recent Researches 



in Photo-elasticity. 

 Imperial College or Science and TECHvoroGv. at 5.30. — Dr. J. D. 

 Falconer: The Wonders of Geology fSwiney Lectures) (4). 



NO. 2715. VOL. 108] 



Kino's College, at 5.30.— H. Moore : Liquid Fuels (3). 

 Kino's College, at 8. — Dr. E. J. Russell : Modern Applications of 

 Chemistry to Crop Production. 



TUESDAY, November 15. 

 Kino's College, at 5.30. — Prof. H. Wildon Carr : The Modern 



Scientific Revolution and its Meaning for Philosophy (6) ; The 



Theory of Natural Selection.— Dr. W. Brown : Psychology and 



Psycho-therapy (5). — L. J. Hunt: Cascade Synchronous Motors 



and Generators (5). 



WEDNESDAY, Novembeb 16. 

 University College, at 3. — Prof. E. G. Gardner : Nature in the 



Divina Commedia (2). 

 King's College, at 4.30.— Dr. C. Da Fano : Histology of the Nervous 



System (6). 

 Robert Barnes Hall, 1 Wimpole Street, W.l, at 5.— Prof. Mellanby : 



Vitamines and Health. 

 King's College, at 5.15.— Prof. G. Elliot Smith : Anthropology. 

 Imperial College op Science and Technology, at 5.30 — Dr. J. D. 



Falconer : The Wonders of Geology (Swiney Leetnres) (5). 



THURSDAY, Novembe* 17. 



University College, at 5.— Prof. J. E. G. Dc Montmorency : The 

 Background of Non-European Feudalism (3). 



Imperi.al College of Science and Technology, at 5.30.— W. Bateson : 

 Recent .Advances in Genetics (3). 



Birkbeck College, at 7.30.— Prof . F. Soddy : The Bearing of Physi- 

 cal Science on Economics (2). 



FRIDAY. November 18. 



University College, at 4.30.— Dr. J C. Drummond: Nutrition (6). 



Imierial College of Science and Technology, at 5.30. — Dr. J. D. 

 Falconer : The Wonders of Geology (Swinev Lectures) (6). 



University College, at 8 —Prof. G. Dawes Hicks : Our Knowlsdgre 

 of the Real World (3). 



CONTENTS. PAGE 



Applied Anthropology . 329 



Chemical Warfare. By Sir T. E. Thorpe, C.B., 



F.R.S. . 331 



Alfred Newton, Ornithologist. By W, E. C. . . 333 



Fruits of the Tropics and Subtropics 3:^4 



Our Bookshelf 334 



Letters to the Editor: — 



The Age of the Earth.— Right Hon. Lord Ray- 



leigh, F.R.S. ... ....... 335 



Inheritance. Mendelism, and Mutation. — Sir G. 



Archdall Reid. K.B R. 335 



Methods of Improving Visibility. — A. G. Lowndes; 



Capt. Sir David Wilson-Barker ... 337 

 Penial and Genital Setae of Lumbrictts terrestris.'L., 



Miill. (//lustrated.)—'DT. J. Stephenson ... 337 

 Speaking Films. — Lough Pendred ; Prof. A. O. 



Rankine 33^ 



The Differentiation of Boiled and Unboiled Water.— 



nr. W. R. G. Atkins 339 



Ophion luteus.— Right Hon. Sir Herbert Maxwell, 



Bxrt., F.R.S. . . 339 



Indian land Mollusca.— Dr. N. Annandale . . 340 

 Curiosities of Nomenclature. — Rev. T. R. R. Steb- 



bin?, F.R.S 34° 



The Flight of Thistledown. — W. E. Lishman ; 



Lewis F. Richardson 34° 



Ceratium and Peflalion.— A. E. Harris 340 



Muscular Piezo-electricity ?— F. Buchanan .... 340 

 Faraday and the Quantum. By Dr. H. Stanley 



Allen 34« 



The Mineral Industry of India. By Prof. Henry 



Louis 343 



Liquid Air Explosives 344 



Obituarv: — 



Prof. F. A. Bainbridge, F.R.S. By W. D. H. 344 



Dr. W. S. Bruce. Bv R. N. R. B. 345 



Prof. F. E. Armstrong. By C. H. D 346 



Notes . ... 347 



Our Astronomical Column : — 



The French Wireless Time- Signals 35 ^ 



Proper Motions of Long period Variable Stars . . . 35^ 



The Last Glacial Epoch . 35' 



The Structure of Adularia and Moonstone. {Illus- 

 trated.) By Dr. A. E, H. Tutton, F.R.S 352 



Tissue Metabolism 353 



Melanesian Land-tenure 354 



University and Educational Intelligence 354 



Calendar of Scientific Pioneers 35^ 



Societies and Academies 35" 



Books Received . 357 



Diary of Societies 359 



