June i6, 1921] 



NATURE 



511 



If these forms had been met with in Nature, without 

 knowing their histor}-, they would have been described 

 as varieties, and even as new species. — P. Choux : A 

 new leafless Asclepias from the north-west of Mada- 

 gascar. — S. Jonesco : Contribution to the study of 

 the physiological role of the anthocyanins. — A. 

 Lumiere' and H. Couturier: Anaphylaxy in plants. 

 Experiments are described and illustrated by repro- 

 ductions of photographs proving definitely that an 

 anaphylactic state can be established in plants. — R. 

 Courrier : The interstitial gland of the testicle and 

 secondary sexual characters in fishes. — Mile. Larbaud : 

 New technique for the inclusions and microscopical 

 preparations of vegetable and animal tissues. The 

 use of butyl alcohol instead of ethyl alcohol is proposed 

 for dehydrating the tissues. It has the advantage 

 of dissolving paraffin wax, thus rendering unnecessary 

 the use of xylene or toluene, and the number of treat- 

 ments can be reduced from six to two. — G. Truffaut 

 and N. Bezssonoff : Increase in the number of Clos- 

 tridium pastorianum in soils partially sterilised by 

 calcium sulphide. — R. Poisson : Researches on the 

 determinism of the loss of the faculty of flight in the 

 aquatic Hemiptera. 



Rome. 

 Reale Accademia nazionale dei Lincei, April 3. — V. 

 Volterra, vice-president, in the chair.— Papers by 

 fellows : — G. Castelnuovo : Abelian functions, iii. : 

 Jacobi's varieties. — C. Segre : The principal lines of 

 a surface of S5 and a characteristic property of 

 Veronese's surfaces, i. — F. Severi : Theory of simple 

 integrals of first species belonging to an algebraic 

 surface, ii. — Communicated through fellows : — G. 

 Rovereto : Erosive development considered as starting 

 from a fundamental surface. — C. Jucci : Metabolism 

 of true royal forms in the society of the Termites, ii.- — 

 Prof. Corbino read an account of the life and work 

 of the late Prof. Augusto Righi, who died on June 8, 

 1920, and a similar notice relating to the late Prof. 

 Michele Rajna, who died on September 29, 1920, was 

 contributed by Dr. Legge. Among additions to the 

 Academy library were mentioned treatises on dynamics 

 of systems by Prof. Maggi and on statics of dams 

 for lakes and science of construction by Prof. Guidi, 

 presented through Prof. Levi Civita, in addition to 

 several mathematical works. 



Books Received. 



Solvency or Downfall? Squandermania and its 

 Story. By Viscount Rothermere. Pp. xi-f-i6o. 

 (London : Longmans, Green and Co.) 25. 



Dairy Bacteriology. By Prof. Orla-Jensen. Trans- 

 lated from the second Danish edition by P. S. Arup, 

 Pp. xii+i8o. (London : J. and A. Churchill.) iSs. 

 net. 



Tables, Factors, and Formulas for Computing 

 Respiratory Exchange and Biological Transformations 

 of Energy. Prepared by Thorne M. Carpenter. 

 (Publication No. 303.) Pp. 123. (Washington : Car- 

 negie Institution.) 2 dollars. 



Index to United States Documents relating to 

 Foreign Affairs, 1828-61. By Adelaide R. Hasse. 

 (In three parts.) Part iii. : R to Z. (Publication 

 No. 18.:;, part iii.) Pp. 1331-1980. (Washington : 

 Carnegie Institution.) 7 dollars. 



Principes de Biologie V^g^tale. By Prof. Noel 

 Bernard. (Nouvelle Collection scientifique.) Pp. xii+ 

 212. (Paris: F. Alcan.) 8 francs net. 



Microbiology : A Text-Book of Microorganisms 

 General and Applied. Edited by Prof. Charles E. 

 Marshall. Third edition, revised and enlarged. Pp. 

 NO. 2694, VOL. 107] 



xxviii+1043+i plate. (London : J. and A. Churchill.) 

 21S. net. 



From a Modern University : Some Aims and 

 Aspirations of Science. By Prof. Arthur Smithells. 

 Pp. 124. (London : Oxford University Press.) 

 125. 6d. net. 



The Commercial Apple Industry of North America. 

 By J. C. Folger and S. M. Thomson. (Rural Science 

 Series.) Pp. xxii+466+xxiv plates. (New York : 

 The Macmillan Co. ; London : Macmillan and Co., 

 Ltd.) iSs. net. 



L'Astronomie et les Astronomes. By Auguste Col- 

 lard. Pp. viii+ 1 19. (Bruxelles : G. Van Oest et 

 Cie.) 



Pneumatic Conveying : A Concise Treatment of the 

 Principles, Methods, and Applications of Pneumatic 

 Conveyance of Materials. By E. G. Phillips. (Pit- 

 man's Technical Primers.) Pp. xii+io8. (London: 

 Sir I. Pitman and Sons, Ltd.) 25. 6d. net. 



Tanning Materials. With Notes on Tanning Ex- 

 tract Manufacture. By Arthur Harvey. Pp. vii+ 

 182. (London : Crosby Lockwood and Son.) 155. 

 net. 



Perfumes, Essential Oils, and Fruit Essences Used 

 for Soap and other Toilet Articles. By Dr. Geoffrey 

 Martin. (Manuals of Chemical Technology, X.) 

 Pp. vii+138. (London: Crosby Lockwood and Son.) 

 I2S. 6d. net. 



Elements of Practical Geometry. A Two Years' 

 Course for Dav and Evening Technical Students. Bv 

 P. W. Scott. "Pp. v+185. (London: Sir I. Pitman 

 and Sons, Ltd.) 55. net. 



A Geological Excursion Handbook for the Bristol 

 District. I3y Prof. S. H. Reynolds. Second edition. 

 Pp. 224. (Bristol : J. W. Arrowsmith, Ltd.; London : 

 Simpkin, Marshall and Co., Ltd.) 55. net. 



Exponentials Made Easv ; or. The Storv of 

 "Epsilon." By M. E. J. Gheury de Bray. Pp. x+ 

 253. (London : Macmillan and Co., Ltd.) 45. 6d. 

 net. 



A Text-Book of Inorganic Chemistry. Edited by 

 Dr. J. Newton Friend. Vol. ix., part ii. : Iron and 

 its Compounds. By Dr. J. Newton Friend. (Griffin's 

 Scientific Text-books.) Pp. xxv+265. (London : C. 

 Griffin and Co., Ltd.) 185. 



Tuberculosis : Its Prevention and Home Treatment. 

 By Dr. H. Hyslop Thomson. (Oxford Medical Pub- 

 lications.) Second edition. Pp. ix+99. (London : 

 H. Frowde and Hodder and Stoughton.) 45. net. 



Year-Book of the Royal Society of London, 1921. 

 (No. 25). Pp. iv+2oi. (London : Harrison and 

 Sons, Ltd.) 75. bd. 



Library of Congress. A List of Geographical 

 Atlases in the Library of Cong.-ess, with Biblio- 

 graphical Notes. Compiled under the direction of 

 Philip L. Phillips. Vol. iv. Pp. clxiii-l-639. (Wash- 

 ington : Government Printing Office.) 1.25 dollars. 



Biochemistry : A Studv of the Origin, Reactions, 

 and Equilibria of Living Matter. Bv Prof. Benjamin 

 Moore. Pp. vii+340. (London : E. Arnold.) 21s. 

 net. 



Fabre, Poet of Science. By Dr. G. V. Legros. 

 Translated by Bernard Miall. Second impression. 

 Pp. 352. (London : T. Fisher L'nwin, Ltd.) Ss. 6d. 

 net. 



Oxford University Junior Scientific Club. Electrons 

 and Ether Waves. Being the Twenty-third Robert 

 Boyle Lecture, on Mav 11, 192 1. By Sir William 

 Bragg. Pp. 14. (London : Oxford University Press.) 

 js. net. 



Oxford and the Rural Problem. Being the First 

 Sidnev Ball Memorial Lecture, December, 1920. By 

 the Right Hon. Sir Horace Plunkett. (Barnett 

 House Papers, No. 6.) Pp. 18. (London : Oxford 

 University Press.) is. 



