io4 



NATURE 



[March 27, 191; 



Bericht uber die Tatigkeit des Koniglich Preuss 

 ischen Meteorologischen Instituts im Jahre 1912. 

 p P- S3+i7 2 + 3 plates. (Berlin: Behrend and Co.) 

 6 marks. 



Biblioth. 1 .1 Ge'ographica. Band xvii. fahrgang 

 1908. Pp. xvi + 533. (Berlin: W. H. Klihl.) 



Iowa Geological Survey, Vol. xxi. Annual Re- 

 ports, 1910 and 191 1, with Accompanying Papers Pre- 

 pared in Cooperation with the U.S." Geological Sur- 

 vey. Pp. xvi+ 1214 + xviii plates. (Des Moines 

 Iowa Geological Survey.) 



Traite Complet d'Analyse chimique appliquee aux 

 Essais Industriels. By Profs. J. Post and B. Xeu 

 mann. Deux. Edition Francaise, Entierement Re 

 fondue. By G. Chenu and M. Pellet. Tome 

 Troisieme. Second Fasc. Pp. 465-902 + v. (Paris 

 A. Hermann et Fils.) 15 francs. 



Traite 1 de Chimie Minerale. By H. Erdmann 

 Translated by Prof. A. Corvisy. Tome Premier. Pp 

 > v + 559- (Paris: A. Hermann et Fils.) 12 francs. 



A New Philosophy : Henri Bergson. Bv E. Le 

 Roy. Translated by V. Benson. Pp. x + 235. (Lon- 

 don : Williams and Norgate.) 55. net. 



Myths of the Modocs. By J. Curtin. Pp. xii + 389. 

 (London : Sampson Low and Co., Ltd.) 12s. ~(d. 

 net. 



In the Lap of the Lammermoors. Bv W. 

 M'Conachie. Pp. xii-t-315. (Edinburgh and" Lon- 

 don : W. Blackwood and Sons.) 5s. net. 



The Belief in Immortality and the Worship of the 

 Dead. By Prof. J. G. Fraz'er. Vol. i. Pp. xxi + 495. 

 (London : Macmillan and Co., Ltd.) 10s. net. 



Das Miocan von Eggenburg. By Dr. F. X. 

 Schaffer. CAbhandlungen der K.K. Geologischen 

 Reichsanstalt. Band xxii. Heft 2.) Pp. 129-1934- 

 12 plates. (Vienna : k.k. Geologischen Reichsan- 

 stalt.) 16 kronen. 



The Decidinc;- Voice of the Monuments in Biblical 

 Criticism. Bv Dr. M. G. Kvle. Pp. xviii4-32o. 

 (London : S.P.C.K.) 4 s. net. ' 



Aus Siid-Brasilien. Bv Dr. W. Breitenbach. Pp 

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The Chemistry of Dyeing. By Dr. J. K. Wood 

 Pp. VH4-80. (London: Gurney and Jackson.) 15. 6rf 

 net. 



Volume and Surface Integrals Used in Phvsics 

 Bv J. G. Leathern. Second edition. Pp. iv+73 

 (Cambridge University Press.) 2s. 6d. net. 



Machine Construction and Drawing-. By A. E. 

 Ingham. Pp. xii4-i43- (London: G. Routledge and 

 Sons, Ltd.) is. 6d. net. 



Vortn'ige iiber Deszendenztheorie gehalten an der 

 Universitat zu Freibursr im Breisg-au. Bv Prof. A. 

 Weissmann. Dritte Auflage. Erster Band und 

 Zweiter Band. Pp. xiv+ 342 + vii + 3544-3 plates. 

 (Jena : G. Fischer.) 13 marks. 



Die Palaeobotanische Literatur. Edited bv W. ]. 

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DIARY OF SOCIETIES. 



THURSDAY, March 27. 

 Concrete Institute, at 7.W.— Props and Beams i 

 Dixon. 



Alii 



Prof. S. M. 



MONDAY. March 31. 

 nstitute OF Actuaries, at 5.— The Estimated Age Distribution of the 

 Indian Population, as Recorded at the Census of ion, and the Estimated 

 Rates of Mortality, Deduced from a Comparison of the Census Returns 

 for 1001 and ic.it : T. G. Ackland. 



of Early Man : Dr. A. S. 



TUESDAY. Ap 

 Royal Institution, at 3.— Recent Discov 



Woodward. 

 Rontc.en Society, at 8.15.— The Physiological Principles of Intern, 



Radium Therapy : Prof. Saubermann, Berlin.— The Radiographic Ep 



Colonial and Foreigr 

 Mitchell-Walker Mois 

 and Semna : S. H. Tr 

 Cocoa-Butter and " Gl 



English, 



NSTITUTION OF ClVII. ENGINEERS 



Areas in Scotland : W. C. Reid.- 

 Derwent, Derbyshire : E. Sandeman. 



WEDNESDAY, April 

 Entomological Society, at S. 



ai.ysts, at 8.— The M< 



Mutters during 1910-1912. with a Note 



Lire Test : L. Gouing-.-icopes —Egyptian Butter 



nen.— A Simple Test for Differentiating between 



en " Butters : C. Revis and E. Richards Bolton.— 



The Correct Way to Use Glycerine-Jelly in Mounting Microscopical 



Objects: L. W. Stansell.— A New Apparatus for Maintaining Constant 



Temperatures: F. H. Dupre and P. V. Dupre. 



British Astronomical Association, at 5. 



THURSDAY, 1 

 t 3.— Ihe Bridge 



ril 3. 

 nto Life: 



Frankland 



NO. 2265. VOL. 91] 



Royai. Institution, 

 Armstrong. 



Linnean Society, at 8.— Some Forms of ALht-miUa vulgaris: C. E. 

 Salmon.-Report on H.M.S. Sealark, Calcarea Prof. A. Dendy.— 

 Embia major, sp. now, from the Himalayas: Prof. A. D. Imms.— A 

 Free-swimming Nauplioid Stage in Palinuris : Dr. J. D. F. Gilchrist.— 

 The Classification of the Order Symphyla : R. S. Bagnall. 



Institution of Mechanical E .gineeks, at A.— Further D 

 Some Effects of Superheating and Feed-water Heating on Locomotive 

 Working: F. H. Trevithick and P. J. Cowan. 



FRIDAY, April 4. 

 Royal Institution, at 9.— The Spectroscope in Organic Chemistry: Dr. 



J. J. Dobbie. 

 Geologists' Association, at S.— The Geology of the Nottingham District : 



CONTENTS. page 



Forest Physiography. By J. W. Mackay 79 



The Highway of Animal Evolution 79 



Zoology and Natural History. By R. I. P. ... So 



Metallurgical Industries 82 



Our Bookshelf 83 



Letters to the Editor: — 



The Falling Birth-rate.— J. Anderson ; Prof. Karl 



Pearson, F.R.S. . • . . 84 



The Radio-Elements and the Periodic Law. — 



Norman R. Campbell . 85 



The Occurrence of ihe Archiannelid, Protodrilus, on 



the South Coast of England. — J. H. Orton ... S5 

 On the Gain of Definition obtained by Moving a Tele- 

 scope. — M.E.J. Gheury . ....... 86 



Four-horned Sheep.— H. J. Elwes, F.R.S S6 



The Experimental Study of Fluid Motion. (Illus- 

 trated. ) By C. G. E S6 



Livingstone as a Man of Science. By Sir H. H. 



Johnston, G. CM. G., K.C.B 89 



Plant Diseases and Insect Pests 90 



Notes 90 



Our Astronomical Column : — 



Spectrum of the Pleiades Nebula 94 



Chromosphetic (Solar) Lines in the Spectrum of <p 



Persei 94 



What Becomes of the Light of the Stars? 95 



Publications of the Slrassburg University Observatory 95 



Tide Tables 95 



Stars with Variable Radial Velocities 95 



The Teaching of Mathematics. By David Beveridge 



Mair 95 



The Rusting of Iron 97 



Southern Hemisphere Seasonal Correlations ... 98 

 Some Methods of Magnifying Feeble Signalling 



Currents. (With Diagrams.) By S. G. Brown . . 98 



•University and Educational Intelligence 100 



Societies and Academies 101 



Books Received 103 



Diary of Societies 104 



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