20 



NATURE 



[March 6, 19 19 



BOOKS RECEIVED. 



What is Psycho-analysis? By Dr. I. H. Coriat. 

 Pp. 124. (London : Kegan Paul, Trench, Triibner, 

 and Co., Ltd., 1919.) 35. 6d. net. 



C^lcolo delle Probability. By Prof. Guido Castel- 

 nuovo. Pp. xxiii + 373. (Milano-Roma-Napoli : 

 Society Editrice Dante Alighieri di Albrighi Segati 

 & C, 1919.) 



Ethnogeography and Archaeology of the Wiyot 

 Territory. By L. L. Loud. Vol. xiv.. No. 3. (Uni- 

 versity of California Publications in American 

 Archaeology and Ethnology.) Pp. 22 1-436 + plates 21. 

 (Berkeley : University of California Press, 1918.) 



Chimica delle Sostanze Explosive. By Prof. Michele 

 Giua. Pp. xvi+556. (Milano : Ulrico Hoepli, 1919.) 

 28 lire. 



Sanitation Practically Applied. By Dr. Harold 

 Bacon Wood. Pp. vi + 473. (New York : John Wiley 

 and Sons, Inc. ; London : Chapman and Hall, Ltd., 

 1917.) 13s. 6d!. net. 



The Game Birds of California. Contribution from 

 the University of California Museum of Vertebrate 

 Zoology. By" Joseph Grinnell, Harold Child Bryant, 

 and Tracy Irwin Storer. Pp. xJ-642 + 16 coloured 

 plates. (Berkeley : University of California Press, 

 1918.) 6 dollars net. 



The Secret of Personality. The Problem of Man's 

 Personal Life as Viewed "in the Light of an Hypo- 

 thesis of Man's Religious Faith. By Dr. G. T. Ladd. 

 Pp. ix + 287. (London : Longmans, Green, and Co., 

 1918.) 75. 6d. net. 



Osmotic Pressure. By Prof. Alexander Findlay. 

 Second edition. (Monographs on Inorganic and 

 Physical Chemistry.) Pp. xi+ii6. (London: Long- 

 mans, Green, and Co., 1919.) 6s. net. 



An Advanced Course in Quantitative Analysis. 

 With explanatory notes. By Prof. Henry Fay. Pp. 

 vi + iii. (New York: John Wiley and Sons, Inc.; 

 London : Chapman and Hall, Ltd., 1917.) 6,'>. net. 



A Systematic Course of Qualitative Chemical 

 Analysis of Inorganic and Organic Substances. With 

 explanafory notes. By Prof. Henry W. Schimpf. 

 Third edition, revised. Pp. ix+187.' (New York: 

 John Wiley and Sons, Inc. ; London : Chapman and 

 Hall, Ltd., 1917.) 7^, net. 



Differential Calculus. By Prof. H. B. Phillips. 

 Pp. V+194. (New York : John Wiley and Sons, Inc. ; 

 London : Chapman and Hall, Ltd., 1916.) gs. 6d. 

 net. 



Empirical Formulas. By Prof. Theodore R. 

 Running. (Mathematical "Monographs, No. 19.) 

 Pp. 144. (New York : John Wiley and Sons, Inc. ; 

 London : Chapman and Hall, Ltd., 1917.) 7^. net. 



DIARY OF SOCIETIES. 



THURSDAY, March 6. 

 Royal Society, at 4.30. — L. F. Richardson : (il Atmospheric Stirring 



Measured by Precipitation ; (2) Measurement of Water in Clouds. 

 Royal Society of Arts, at 4.30.— W. R. Gourlay : The Need for a 



History of Bengal. 

 LiNNEAN Society, at 5-— Dr. Harold Wager : The Colour-sense of Wasps. 



— F. Lewis : Notes oh a Visit to Kunadiparawitta Mountain, Ctylon, with 



List of the Plants observed and their Altitudinal DLstribution. 

 Institution of Electrical Engineers, at 6. — G. L. Addenbrooke : 



Dielectrics in Electric Fields. 

 Child-Study Society, at 6.— Miss S. Walker : The Training of Teachers 



from the Child-Study Standpoint. 

 Chemical Society, at 8. — Prof. J. W. Nicholson : Emission Spectra and 



Atomic Structure. 



FRIDAY, March 7. 

 RovAL Institution, at 5.30. — Prof. H. C. H. Carpenter : The Hardening 



of Steel. 



SATURDAY, March 8. 

 Royal Institution, at 3. — Sir J. J. Thomson : Spectrum Analysis and its 



Application to Atomic Structure. 



MONO A Y, March 10. 

 Royal Institution, at 3.— Capt. G. P. Thomson : The Dynamics of Flying 

 Royal Society of Arts, at 4.30.— Prof. W. A. Bone : Coal and its Con- 



Societyof Engineers, at5.30.-A. S. E. Acksrmann : Experiments with 



Clay u) Its Relation to Piles. 

 Royal Geographical Society, at 8. — Major J. B. Noel : The Eastern 



Approaches to Mt. Everest, 



TUESDAY, March ii. 



Royal Institution, at 3.— Pro*: H. Maxweli Lefroy : Insect Problems. 



Royal Anthropological Institute, at 3, with Prehistoric Soiiety of 

 East Angha.-R. S.Smith: Presidential -Address— Foreign Relations in 

 the Neolithic Period.— At 5-I5-— S. H. Warren : The Dating of Sarface 

 Flint Implements and the Evidence of the Submerged Peat Surfaces.— 

 M. L6on Coutil : Note on an .\ll6e Couverte Discovered in the Course of 

 making Trenches for the Defence of Paris. 



Institution of Civil Engineers, at 5.30.— J. Caldwell and H. B. 

 Sayers : Electric Welding Developments in Great Britain and the United 

 Slates of America.— W.. S. Abell : E.vperiments on the Application of 

 Electric Welding to Large Structures.— J. R. Smith : The Application of 

 Electric Welding in Ship Construction and Repairs. 

 WEDNESDAY, March 12. 



R9YAL Society of Arts, at 4.30.— W. L. Lorkin : Electric Welding and 

 its Applications. 



Geological Society, at 5.30.— E. H. Pascoe : The Early History of the 

 Indus, Brahmaputra, and Ganges. 



Royal Aeronautical SocietV, at 8.— H. Levy: From Model to Full 

 Scale in Aeronautics. 



THURSDAY, March 13. 



Royal Society, at ^.^o.— Probable Papers: Dr. A. D Waller: Con- 

 cerning Emotive Phenomena. III. : The Influence of Drugs upon the 

 Electrical Conductivity of the Palm of the Hand.— Dr. W. L." Balls : The 

 Existence of Daily Growth-rings in the Cell Wall of Cotton Hairs. 



Royal Society of Art.s, at 4.30.— D. T. Chadwick : The Report of the 

 Indian.Industrial Commission. 



Institution of Electrical E.vgineers, at 6. — G. L. Addenbrooke : 

 Dielectrics in Electric Fields. 



Optical Society at 7.— Major C. W. Gamble: Some Photographic 

 Apparatus used in Aerial Photography. 



FRIDAY, March 14. 

 Physical Society, at 5. — C. C. Paterson and Dr. Norman Campbell : Some 

 Characteristics of the Spark Discharge, and its Effect in Igniting Explo- 

 sive Mixtures. . 

 Royal Institution, at 5.30. — Prof. A. Keith: The Organ of Hearing 

 from a New Point of View. 



SATURDAY, March iv 

 Royal Institution, at 3.— Sir J. J. Thomson : Spectrum Analysis and its 

 Application to .\tomic Structure. 



CONTENTS. P.\GE 



The Life-work of a Hindu Chemist,- By Sir T. E. 



Thorpe, C.B., F.R.S i 



Gravitation and Relativity 2 



Our Bookshelf 2 



Letters to the Editor : — 



The Directorship of the Natural History Museum.— 



Prof. W. Boyd Dawkins, F.R.S., and Others . 3 

 The Supposed "Fascination " of Birds. — Right Hon. 



Sir Herbert Maxwell, Bart., F.R.S 4 



Girvanella and the Foraminifera.— Fredk. Chapman 4 

 Feeding Habits of Nestling Bee-eaters.— Edgar R. 



Waite 4 



The Commercial Use of Airships 4 



Dr. F. Du Cane Godman, F.R.S. By E. B. P. . . . 5 



Notes . . 6 



Our Astronomical Column : — 



The Order of the Planets • • 1° 



Cepheid Variables 1° 



Variation of Latitude • 10 



The Health of Our Children. ByW. E. H n 



Forthcoming Books of Science u 



Meteorology During and After the War. By Col. 



H. G. Lyons, F.R.S 12 



University and Educational Intelligence 16 



Societies and Academies-; • • i? 



Books Received ^° 



Diary of Societies ^o 



Editorial and Publishing Offices: 



MACMILLAN AND CO., Ltd., 



ST. MARTIN'S STREET, LONDON, W.C.2. 



servation. 



NO. 2575, VOL. 103] 



Advertisei7ients and business letters to be addressed to the 

 Publishers. 



Editorial Communications to the Editor. 

 Telegraphic Address : Phusis, London. 

 Telephone Number : Gsrrard 8830. 



