540 



NATURE 



[August 30, 191 7 



established for a non-pathogenic bacillus, such as the 

 lactic ferment, may be applied to pathogenic organisms. 



August 20. — M. J. Boussinesq in the chair. — Y. 

 Delage : First results of the study of deep currents by 

 means of the bathyrheometer. — J. Deprat : The in- 

 flexions of the tectonic directions in the north of Annam 

 and their relations.— ^Mlle. M. Bensaude : Sexuality in 

 the Basidiomycetes.— A. Lecaillon : Biology of the cater- 

 pillars and moths of Bonibyx mori having a partheno- 

 genetic origin. 



Petrograd. 



Academy of Sciences (Physico-mathematical Section), 

 April 12.— E. S. Fedorov : Application of the prin- 

 ciples of the new geometry to crystallo-optics.- — V. Ja. 

 Roskovskij : Contributions to the study of the family 

 Lymngeidae.— V. V. Zalenskij : The development of the 

 emhryo oi Salpahicaudata.- — V. K. Soldatov : Description 

 of a new species of Krusensterniella, Schmidt.— A. Sesta. 

 kov : The new species of the genus Cerceris, Latr., in the 

 Zoological Museum of the Academy of Sciences.— V. L. 

 Bianchi : (i) Notes on the Russian Chiroptera. (2) Notes 

 on the avifauna of North Tobolsk. (3) The birds of 

 Francis Joseph Land collected by Lieut. Sedov's ex- 

 pedition.^A. F. Samojlov : Positive oscillation of the 

 current of repose of the auricle of the turtle during 

 excitement of the pneumogastric nerve. — L S. Plot- 

 nikov : The softening and bending of carbon at high 

 temperatures. — N. S. Kurnakov, K. F. Beloglazov, and 

 M. K. Smatko : Deposits of potassium chloride in the 

 Solikamsk salt formation. 



April 27. — M. D. Zaiisskij : Noeggerothiopsis 

 aequalis, Goepp. sp., on the foliage of Mesopitys 

 Tchihatcheffi (Goepp.), Zal^sskij. — A. S. Vasiljev : Cor- 

 rection of the length of the Moloskovitzi and Pulkovo 

 bases measured in 1888. — V. S. Zardeckij : Researches 

 on the spectrum of the variable t; Aquilse. — A. S. 

 Vasiljev : The monthly period in the variations of 

 latitude. — M. M. Kamenski] : Researches on the 

 motion of Wolf's comet. — N. N. Donic : Observations 

 of the solar eclipse of Apru 16-17, 1912.— V. C. Doro- 

 gostajskij : The birds of the Government of Irkutsk. — 

 V. F. Osanin : (i) The genera of the family 

 Strachiaria, Put. (Heteroptera, Pentatomidae). (2) 

 Two new species of Pentatomidae from southern 

 Persia. — S. F. Zemcuznij and V. K. Petrasevic : Electric 

 conductivity and hardness of manganese-copper alloys. 

 — A. A. Borisiak : Description of the skeleton of a 

 small rhinoceros, Epiacerethcrium tiirgaicum. — O. A. 

 Walther : The dialysis of diastases. — V. N. Ipatjev 

 and A. Andriuscenko : The absorption of carbonic 

 acid by saline solutions under high pressure. 



Historico-philological Section, April 19. — ^K. A. 

 Inostrancev : The Iran-Vedza river- in Parseo tradition. 



BOOKS RECEIVED. 



Report of the Royal Ontario Nickel Commission, 

 with Appendix. Pp. xlviii4-2i9 + 62. (Toronto: A. T. 

 Wilgress.) 



La Force et le Droit, le Pretendu Droit Biologique. 

 By Prof. R. Anthony. Pp. 194. (Paris : F. Alcan.) 

 2.50 francs. 



Food Poisoning. By E. O. Jordan. Pp. viii + 115. 

 (Chicago : University of Chicago Press ; London : 

 Cambridge University Press.) i dollar, or 45. net. 



Finite CoUineation Groups, with an Introduction to 

 the Theorv of Grouos of Operators and Substitution 

 Groups. By Prof. "H. F. Blichfeldt. Pp. xi+193. 

 (Chicago : University of Chicago Press ; London : 

 Cambridge University Press.) 1.50 dollars, or 6s. net. 



NO. 2496, VOL. 99] 



Library of Congress. Report of the Librarian of 

 Congress and Report of the Superintendent of the 

 Library Building and Grounds for the Fiscal Year 

 ending June 30, 19 16. Pp. 236. (Washington: 

 Government Printing Office.) 



Smithsonian Contributions to Knowledge. Vol. 

 xxxv.. No. 3. .\ Contribution to the Comparative 

 Histology of the Femur. By Prof. J. S. Foote. Pp. 

 ix + 242 + plates 35. (Washington : Smithsonian Insti- 

 tution.) 



A Course in Mathematical Analysis. Differential 

 Equations, being part ii. of vol. ii. By Prof. E. Gour- 

 sat. Translated by Prof. E. R. Hedrick and O. 

 Dunkel. Pp. viii + 300. (Chicago and London: Ginn 

 and Co.) lis. 6d. net. 



The Munition Workers' Handbook. A Guide for 

 Persons taking up Munition Work. With special 

 chapters on Shell Turning and Gear Cutting. By E. 

 Pull. Second edition. Pp. 158. ' (London : Crosby 

 Lockwood and Son.) 25. 6d. net. 



CONTENTS. PAGE 



Science and Society. By C. A 521 



Rings .522 



Two Books on Minerals. By J. W. E 523 



Our Bookshelf 5^3 



Letters to the Editor:— 



A Forecast of Coming \Vinter=. {IFt'tk Diagram.) 



—Dr. C. Easton 524 



Auroras and Magnetic Storms. — Lieut. L. Cave . . 525 

 An Unusual Rainbow. {With Diagraw.)— Allan J. 



Low 525 



An Invasion of Ants. — Eleonora Atmitage . . . . 525 



The Adoption of the Metric System. By A. F. B. . 526 



Prof. W. B. Clarke 527 



Notes 528 



Our Astronomical Column : — 



Comet i9i6iJ (Wolf) 532 



Radial Velocities of Spiral Nebulre 532 



The History of Orbit Deduction 532 



Progress of Applied Chemistry. By F. R. 



O'Shaughnessy . 532 



Technical Education in South Wales. By Prof. J. 



Wertheimer 533 



The Treatment of War Wounds. II. {///i/s/ra/ed.) 



By Col. Sir Almroth E. Wright, C.B., F.R.S. . 534 



University and Educational Intelligence 539 



Societies and Academies . . 539 



Books Received .... 540 



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