5o8 



NATURE 



[June 17, 1920 



Elgie's Weather Book : For the General Reader. 

 By J. H. Elgie. Pp. xii + 251. (London: The Wire- 

 less Press, Ltd.) 5s. net. 



Structural and "Field Geology. By Dr. J. Geikie. 

 Fourth edition. Pp. xxiv + 454+lxix plates. (Edin- 

 burgh: Oliver and Boyd; London: Gurney and 

 Jackson.) 24s. net. 



The Evolution of a Coast-Line : Barrow to Aberyst- 

 wyth and the Isle of Man, with Notes on Lost Towns, 

 Submarine Discoveries, etc. By W. Ashton. Pp. 

 xvi4-302. (London: Edward Stanford, Ltd.) 105. 

 net. 



All^emeine Erkenntnislehre. By M. Schlick. Pp. 

 x+346. (Berlin: J. Springer.) 18 marks. 



Letters of Travel. By Rudyard Kipling. Pp. vi + 

 284. (London : Macmillan and Co., Ltd.) 75. 6d. net. 



The Revels of Orsera : A Mediaeval Romance. By 

 Sir Ronald Ross. Pp. vi + 393. (London: John 

 Murrav.) 75- net. 



The "Group Mind. By W. McDougall. Pp. xvi+ 

 304. (London : Cambridge University Press.) 215. 

 net. 



Malaria at Home and Abroad. By Dr. S. P. 

 James. Pp. xi+234. (London : John Bale, Ltd.) 

 25s. net. 



The End of the World. By J. McCabe. Pp. vii + 

 267. (London : G. Routledge and Sons, Ltd.) 6s. 

 net. 



Pharmacology. By Dr. D. Cow. Pp. viii+132. 

 (London : J. and A. Churchill.) 75. 6d. net. 



Oil-Finding-. By E. H. Cunningham Craig. 

 Second edition. Pp. xi + 324 + xiii plates. (London: 

 Edward Arnold.) i6s. net. 



For<=>st Management. By Prof. A. B. Recknagel 

 and Prof. J. Bentlev, Jr. Pp. xiii+269 + iii plates. 

 (New York : T. Wilev and Sons, Inc. ; London : 

 Chapman and Hall, Ltd.) 13s. 6d. net. 



Aeronautics. By Prof. E. B. Wilson. Pp. vii + 

 265. (New York : J. Wiley and Sons, Inc. ; London : 

 Chapman and Hall, Ltd.) 22s. net. 



Diary of Societies. 



THURSDAY, June 17. 



Royal Society, at 4.3o.^Prof. W. Bateson : Genetic Segregation (Croonian 

 Lecture). 



LiNNEAN Society, at 5.— Celebration of the Centenary of Sir Joseph 

 Banks, Bart. (1743-1820).— Dr. B. Daydon Jacl<son : Banks as a Tra- 

 veller.— Dr. A. B. Rendle : Banks as a Patron of Science.— J. Britten : 

 Banks as a Botanist. 

 .Royal College of Physicians of- London, at 5. — Dr. A. F. Hurst : The 

 Psychology of the Special Senses and their Hysterical Disorders (Croonian 

 Lecture). 



Royal .Society of Medicine (Dermatology Section), at 5. 



Chemical Society (at Institution of Mechanical Engineers), at 8.— Prof. 

 J. C. McLennan : Helium. 



Harvei AN Society of London (at Medical Society), at 8.30.— Dr. E. G. 

 Little : Differential Diagnosis of some Common Skin Eruptions. 



Society of Antiquaries, at 8.30. 



FRIDA V, Junk 18. 1 



Institution of Sanitary Engineers (.it Holborn Restaurant), at 



11.30a.m. — The President: The Institution and its Future. — A.J. 



Martin : Sanitary Socialism. At 2.30. — T. Robertson: Poured Concrete 



Construction.— G. W. Chilvers : Health, Wealth, and Housing.— A. P. I. 



Cotierell : A Glimpse at Domestic Engineering in some of the Eastern 



States of America. 

 Royal Society of Arts (Indian Section), at 4.30. — Sir Valentine Chirol : 



The Knduring Power of Hinduism (Sir George Birdwood Memorial 



Lecture). 

 Geophysical Committee (at Royal Astronomical Society), at 5. — Com- 

 mander H. D. Warburg, Prof H. Lamb, Dr. J. Proudman, Dr. A. T. 



Doodson, Major A. J. Wolff, and H. L. P. Jolly : Discussion on Tides. 

 Society of Tropical Medicine and Hygiene (Annual General Meeting), 



at 8.30. — Dr. F. H. Stewart : Recent Work on Round-worm Infection. 



SATURDAV, JvttEjg. 

 British Psychological Society (at University College, Gower Street), 



at 3.30. — Dr. J. Drever : The Emotional Phases of Affective Experience. 

 Physiological Society (at Physiological I-iboratory, University of 



London, S'iuthKensington),at 4.30. — G. AurepandC. Lovatt Evans :The 



Mode of Action of Vasodilator Nerves. — C. Lovatt Evans: The Lactic 



Acid Content of Plain Muscle. 



MONDA V, June 21. 

 Royal Geographical Society (at .^olian Hall), at 8.30.— Major L. F. I. 



Athill : Through South-west .■Abyssinia to the Nile. 



Royal Institute of British Architects, at 8.30. 

 Aristotelian Society (at 74- Grosvenor Street), at 8.— Miss Beatrice 

 Edgell : Memory and Conation. 



TUESDAY, June 22. 



Royal College OF Physicians ok London, at 5. — Dr._ A. F. Hurst : 

 The Psychology of the Special Senses and their Hysterical Disorders 

 (Croonian Lecture). 



Royal Aeronautical Society (at Central. Hall, Westminster), at 8.30. — 

 Comdr. J. C. Hunsaker : Naval .Architecture in Aeronautics (Wilbur 

 Wright Lecture). 



WEDNESDAY ivuv. 23. 



Geological Society of London, at 5.30.— O. Holtedahl : The Scandi- 

 navian " Mountain Problem." 



Institution of Electrical Engineers (Wireless Section), (at Institu- 

 tion of Mechanical Engineers), at 6. — B. S. Gossling : The Development 

 of 1 hermionic Valves for Naval Uses. 



THURSDAY, June 24. 



Royal Society, at 4.30. — Probable Papers. — Sir Ray Lankester : Some 

 Rostro-carinate Flint Implements and Allied Forms. — Lord Rayleigh : 

 A Re-examination of the Light scattered by Gases in respect of 

 Polarisation. I. Experiments on the Common Gases. — A. Mallock : 

 Note on the Influence of Temperature on the Rigidity of Metals. — 

 Drs. E. F. Armstrong and T. P. Hilditch : A Study of Catalytic Actions 

 at Solid Surfaces. V. Tne Rate of Change conditioned by a Nickel 

 Catalyst and its Be.iring on the Law of Mass Action. — Dr. H. Jeffreys : 

 Tidal Friction in Shallow Seas. — Other Papers. 



Linnean Society ok London, at 5. — Dr. C. J. F. Skottsberg : Recent 

 Rese.irches on the Antarciic Flora.— Dr. R. J. 'I illyard : The Cawthorn 

 Institute, New Zealand, and its Jiiological Function. 



Oil and Colour Che.viists' Association (at Food Reform Club, 2, 

 Furnival Street), at 7.30. — A. E. Bawtill : (i) .A Hydrometer for Accurate 

 Determinations of Pastes and Viscous Materials ; (2 A Viscometer which 

 Combines Increased Efficiency with the Power of Measuring " Stickiness " 

 Independently of Viscosity. 



FRIDAY, June 25. 



Physical Society of London, at 5. — Dr. J. H. Vincent: The Origin of 

 the Elements.— W. H. Wilson and Miss T. D. Epps : The Construction 

 of Thermo-couples by Electro-deposition. — J. Guild: The Use of 

 Vacuum Arcs for Interferometry. — S. Butterworth : The Maintenance of 

 a Vibrating System by Means of a Triode Valve. 



CONTENTS. PAGE 



University Stipends and Pensions 477 



Aerography 479 



Paper-making and its Machinery. By R. W. 



Sindall 480 



The Structure of the Nucleus. By R. R. G 482 



Our Bookshelf 483 



'Letters to the Editor: — 



London University Site and Needs.— Sir E. Sharpey 



Schafer, F.R.'S 484 



High Rates of Ascent of Pilot-Balloons. {With 



Diagram.) — "Dr. W. van Bemmelin . ... 485 

 A New Method for Approximate Evaluation of 

 Definite Integrals between Finite Limits. — Com- 

 mander Thos. Y. Baker 486 



The Royal Military Academy.— J. Young 486 



The Separation of the Isotopes of Chlorine. — D .L. 



Chapman, F.R.S. . .... 487 



A Note on Telephotography. — A. B 488 



Recent Researches on Nebulae. (Illustrated.) By 



Major William J. S. Lockyer 489 



The Importance of Meteorology in Gunnery. By 



Dr. E. M. Wedderburn 492 



Obituary : — 



S. Ramanujan, F.R.S.— Prof. G. H. Hardy, 



F.R.S , . . , , 494 



Principal Sir John Herkless, D.D., LL.D. . . . 495 



Notes 496 



Our Astronomical Column : — 



The Masses of the Stars . . , 500 



The Planet Jupiter . . . 500 



Parallax Work at the Sproul Observatory 500 



The Nuclear Constitution of Atoms. By Sir 



Ernest Rutherford, F.RS. 500 



The Rockefeller Gift to Medical Science. By Prof. 



W. M. Bayhss, F.R.S 501 



The Permanent Value of University Benefactions . 501 

 The Imperial Entomological Conference, By 



G. H. C 502 



The Selous Memorial at the Natural History 



Museum. (Illustrated.) 504 



University and Educational Intelligence 505 



Societies and Academies . . 506 



Books Received 507 



Diary of Societies 508 



NO. 2642, VOL. 105] 



