5 2 4 



NATURE 



[July 17, 19 13 



nervous tissue of the cranial and spinal nerves. — E. 

 Bourquelot and M. Bridel : The synthesis of P-geranyl- 

 glucoside with the aid of emulsin ; its presence "in 

 plants. The glucoside can be synthetised from 

 geraniol saturated with water and glucose in presence 

 of emulsin ; a larger yield is obtained in aqueous 

 acetone solution. The presence of this glucoside was 

 proved in Pelargonium odoratissimum. — P . Noel 

 Bernard and J. Bauche : The influence of the mode of 

 penetration (cutaneous or buccal) of Stephanurus 

 dentaius on the localisations of this Nematod in the 

 organism of the pig and on its evolution. — E. Pinoy : 

 The necessity of a bacterial association for the de- 

 velopment of a Mycobacterium, Chondromyces 

 crocatus.- -F. Picard and G. R. Blanc : Coccobacillary 

 infections in insects. — F. Kerforne : The Devonian iron 

 minerals of Brittany. — Antonin Lanquine : The pre- 

 sence of layers containing Witchellia, of the lower 

 Bajocian, at some new points of the Van— Alfred 

 Angot : A new barometric formula. The barometric 

 formula communicated to the last meeting is equiva- 

 lent to Babinet's formula. The latter m its original 

 form is more easy to memorise. — Ladislas Gorczynski : 

 The reduction in the solar radiation for 1912 from 

 pyrheliometric measurements made in Poland. 



BOOKS RECEIVED. 



Some Secrets of Nature. With an Introduction by 

 W. J. P. Burton. Pp. xiv+ 144+ plates. (London': 

 Methuen and Co., Ltd.) 



The Romance of Nature. A Nature Reader for 

 Senior Scholars. With a Preface by Rev. A. Thorn- 

 lev. Pp. xix+ 164 4-x plates. (London: Methuen and 

 Co., Ltd.) 2s. 



Demonstration du Theoreme de Fermat. By Prof. 

 E. Fabry. Pp. 22. (Paris: Hermann et Fils!) 1.50 

 francs. 



Grundriss der Fermentmethoden. By Prof. J. 

 Wohlgemuth. Pp. ix + 355. (Berlin: J. Springer.) 

 10 marks. 



Petrographische Untersuchungen an Gesteinen des 

 Polzengebietes in Nord-Bdhmen. Des xxxii. Bandes. 

 Der Abhandlungen der Mathematisch-Phvsischen 

 Klasse. No. VII. Bv K. H. Scheumann. Pp. vi + 

 607-776. (Leipzig : B. G. Teubner.) 8 marks. 



Memoirs of the Geological Survev of India. Vol. xl. 

 Part 1. The Oil-Fields of Burma. By E. H. Pascoe. 

 Pp. x + 26q + xxxix + 54 plates. (Calcutta: Geological 

 Survey of India; London : Kegan Paul and Co., Ltd.) 

 5 rupees, or 6s. Sd. 



Les Idees Modernes sur la Constitution de la 

 Matiere. Conferences Faites en 1912. By E. Bauer, 

 A. Blanc, E. Bloch, Mme. P. Curie, A. Debierne, 

 and others. Pp. 370. (Paris : Gauthier-Villars.) 12 

 francs. 



Les Moteurs Thermiques dans leurs rapports avec 

 la Thermodynamique. Moteurs a explosion et a Com- 

 bustion. Machines alternatives a Vapeur. By F. 

 Moritz. Pp. vi + 297. (Paris: Gauthier-Villars.) 13 

 francs. 



Proceedings of the Third Meeting of the General 

 Malaria Committee held at Madras, November 18, 

 19, and 20,, 1912. Pp. iv + 289. (Simla: Government 

 Central Branch Press.) 



The Tarn and the Lake : Thoughts on Life in the 

 Italian Renaissance. By C. J. Holmes. Pp. x + 48. 

 (London : P. Lee Warner.) 2s. 6d. net. 



The British Parasitic Copepoda. Bv T. Scott and 

 A. Scott. Vol. i. Text. Pp. ix + 2^2 + 2 plates. 

 Vol. ii. Plates. Pp. xii + lxxii plates. (London : The 

 Rav Society; Dulau and Co., Ltd.) 155. net. 



Das Tierreich. Edited by F. E. Schulze. Lief. 34 I 

 to 38. (Berlin: R. Friedlander und Sohn.) iS marks ; | 

 NO. 228l, VOL. 91] 



38 marks; 13 marks; 3.50 marks; 5.20 marks respec- 

 tively. 



Animal Husbandry for Schools. By Prof. M. W. 

 Harper. Pp. xxii + 409. (London: Macmillan and 

 Co., Ltd.) 6s. net. 



The Development of the Human Body. By Prof. 

 J. P. McMurrich. Fourth edition. Pp. x + 495. 

 (London : H. Kimpton.) 12s. bd. net. 



Die Europaeischen Schlangen. By Dr. F. Stein- 

 heil. Zweites Heft. Plates 6-10. (Jena : G. Fischer.) 

 3 marks. 



Sitzungsberichte der Physikalisch-medizinischen 

 Sozietat in Erlangen. 44 Band. 1912. Pp. xxvii + 

 256. (Erlangen : M. Mencke.) 



Irritability : a Physiological Analysis of the General 

 Effect of Stimuli in Living Substance. By Prof. 

 Max Verworn. Pp. xii + 264. (New Haven, Conn. : 

 Yale University Press ; London : Oxford University- 

 Press.) 155. net. 



Travers' Golf Book. By J. D. Travers. Pp. 232. 

 (London : Macmillan and Co., Ltd.) 8s. 6d. net. 



Palasontologische Zeitschrift. Edited by Prof. O. 

 Jaekel. Band I. Heft 1. Pp. 160+3 plates. (Ber- 

 lin : Gebruder Borntraeger.) 25 marks. 



The Eugenics Education Society. Fifth Annual 

 Report, 1912-13. Pp. 76. (London : Kingsway 

 House, Kingsway.) 



A History of the First Half-Century of the National 

 Academy of Sciences, 1863-1913. Pp. ix + 399 + plates. 

 (Washington : The National Academy of Sciences.) 



Department of Commerce and Labor. The 

 Foreign Commerce and Navigation of the United 

 States for the Year ending June 30, 1912. Pp. 1342. 

 (Washington : Government Printing Office.) 



CONTENTS. page 



Aristarchus of Samos. By J. L. E. D 499 



The Apotheosis cf the Potato. By Dr. E. J. Russell 500 



Text-Books of Physics 501 



Our Bookshelf 502 



Letters to the Editor: — 



Pianoforte Touch.— Prof. G. H. Bryan, F.R.S. . . 503 

 Mackerel and Calanus. — Prof. W. A. Herdman, 



F.R.S 504 



Helium and Neon. — Prof. Bohuslav Brauner . . 505 



Red Water and Brine Shrimps. — Dr. W. T. Caiman 505 



The Maximum Density of Water. — W. B. Croft . . 505 

 Radio-activity and the Age of the Earth. — Dr. 



F. C. S. Schiller 505 



The General Magnetic Field of the Sun. (Illustrated.) 505 

 The Birmingham Meeting of the British Associa- 

 tion 509 



Notes 511 



Our Astronomical Column : — 



A Meteorite Seen to Fall and Found 514 



Measures of Proper Motion Stars 515 



The Total Solar Eclipse of August 30, 1905 .... 515 



The Kelvin Memorial Window 515 



The Exeter Meeting of the Royal Sanitary Institute 515 



Report of the Advisory Committee on Forestry . . 516 



Ornithological Notes. By R. L 517 



Great Advance in Crystallography. — (Continued.) 



(Illustrated.) By Dr. A. E. H. Tutton, F.R.S. . . 51S 



University and Educational Intelligence 522 



Societies and Academies 523 



Books Received 524 



Editorial and Publishing Offices : 



MACMILLAN & CO., Ltd., 



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



Advertisements and bit 



;iness letters to be addressed to the 

 Publishers. 



Editorial Communications to the Editor. 

 Telegraphic Address: Phusis, London. 

 Telephone Number : Gerrard 8830. 



