236 



NATURE 



[December 14, 191 1 



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Farm no'i 

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Ltd.) I05. ntt. 



F.Iemcntary Graphic Statics. Bv Di. \\ . 1 ( i.,vf,,rd. 

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A Compendium of Avintion .11 

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Geological and Topographical Maps : their 

 and Use. A Handbook for thf GpoIoc;!- 

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 (London : E. Arnold.) 45. 6d. net. 



Die Pflanzenwelt Dalmatiens. \\\ IVof. I,. 

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Ancient Types of Man. By V\.' " '1. Tp. xix + 



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 S.W. Second edition. Pp. x+ 183 + 7 plates. (London: 

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Philip 



DIARY OF SOCIETIES. 



THURSDAY. l>i .mi. i. ,4. 



Royal Society of Arts, at 4.30.— The Fisheries of Bengal : Dr. I. Travis 



Jenkin.s. 

 Institution of Ei.kctrical Engineers, at 8.— Residence Tariffs ■ A E 



Seabrook. 

 Concrktf, Institute, at 8.— Some Recent Works in Reinforced Concrete : 



Ci. C. Workman. 



FRIDAY, Dfcemiier 15. 



Institution of Mechanical Engineers, at %. — Discussion: Double- 



cuttinfr and High-speed Planing Machines: J. Hartley Wicksteed.— 



PrtthahU Paper : Oil-burning Locomotives on the Tehuantepec National 



Railway, Mexico : R. Godfrey Aston. 

 Institution of Civil Engineers, at 8.— Tests on Reinforced Concrete : 



E. F. Huim. 



MONDAY, Decemder 18. 

 ^?y*o Society of Arts, at 8.— The Carbonisation of Coal : Prof. 



V. B. Lewes (Lecture IV.). 

 RovAL Geographical Society, at 8.30.— American Deserts: Dr. T. 



McDougall. 

 Institute OF Actuaries, at 5.— Some Recent St.ninical Results: \V. 



Palm Elderton. 



TUESDAY, December >9. 

 Physical Society.— Annual Exhibition. 

 Royal Statistical Society, at 5.— The Economic Position of Scotland 



and her Financial Relations with England and Ireland : E. Crammond. 

 illuminating Engineering Society, at 8.— Some Aspects of Railway 



btation and Goods Yard Illumination : Haydn T. Harrison. 



NO. 2198, VOL. 88] 



i;inl'>n and I 

 Witw«ter'>r;. 



of a Catf;t; : 



-httrth<r Diuuniom : Kxpcn* 

 Ttien of Welded Jointt in Iroi 

 l'..'r.''I Vri'lahlt Pa^n 



1» ( ! -iKh. — InveMi, 

 ! .\.t.i i.'i ( d}H! Colony: j 



'I CftMBKK 90. 



' jo.— SoIat Halo* sad BrockM 

 : iitcal Changes of Prtmirt sad Tern- 

 company Cnansw of JViiut u ib« 



.1 S. TJ.c Glacial 

 -. Ordovician and 

 I, n.iriiiiier and I' 



■It 8. — I'holoii»itrogfa{>ti> t».' li.<: 

 lillington Scale*.— Bntith I'abit 



' MBKK 31. 



1 -r, at 8. 



LiM.NKAN .-^ociKiv, at B - Notnr Ai.nriuN of the Thamc* Vallev: K<rv. 



Hilderic FrieiKl. —The Seedling Structure of Leguminoiae : R- C Comptoa, 



— The Intemodenof Calamites : Prof. Percy Groom. 



CONTENTS. 



Gotterdammerung. By A. E. Crawley ...... 



The Scourge of Tropical Africa. Hy G. A. K. M. 

 The Psychologist and the Teacher. Hy Prof. J. A. 



Green ...... 



Timber and Paper. By C. Simmonds 



Dr. Lunge and the Leblanc Process of Alkali 



Manufacture 



Geometry and Algebra ..... 



Mechanics and Testing of Materials. By T. H. B. 



Our Book Shelf 



Letters to the Editor: - 



The Relation of Big Game to Sleeping Sickness. — 



Prof. E. A. Minchin, F.R.S 



The Inheritance of Mental Characters. — Sir H. 

 Bryan Donkin ; Dr. G. Arcbdall Reid ; 

 E. Lawrence 

 Temperature of the Upper Atmosphere. {With 



Diagram.) — R. M. Deeley 



The Weather of 191 1 and the Ultra-violet Radia- 

 tions of the Sun. — Dr. Carl Ramsauer .... 

 "Draysonia." — Admiral Sir Algernonde Horsey, 



K.C.B. ; The Reviewer . 



Dust Explosions. — Albert Shonk ; W. G 



The Feeding Habits of Crepidula.— J. H. Orton 

 Tadpole of Frog. — T. Plowman . . . 



Microkinematography. (/. 

 The Rubber-producing Pla he Mexican 



Deserts, {lllustraled.) 



The Aeronautical Blue-book for 1910-11 



Sight Tests in the Mercantile Marine 

 Wind in the Adriatic and in Holland. Hy E. Gold 

 Report of the Government Chemist. Hy C. S. 

 Prince Bonaparte's Aids to Scientific Work . 



Notes 



Our Astronomical Column : — 



Schaunia.sses Comet, 1911// 



Observations of Comets 



The Distribution of Stars of Different Spectral Types 

 Determination of Radial Velocities ..... 

 Early Methods of Determining Latitu^i. 



Stars having Peculiar S[>ectra 



The Evolution of Multiiile Stars ...... 



Mathematics in English Schools. I'.y G. H. B 



The Health of the Nation 



The Analysis of Species. By W. LB 



Amphibian Faunas of South Africa and Mada- 

 gascar 



Water Supply in Australia 



The Divining Rod. By J. W 



New Mechanical Engineering Laboratory of the 

 Municipal Technical Institute, Belfast. (//,///- 



t rated.) 



Science Examinations and Grouped Course Cer- 

 tificates. By Mr. Barker North 



Induced Action of Leucocytes. By Sir Ronald 



Ross, K.C.B. , F.R.S 



University and Educational Intelligence 



Societies and Academies 



Books Received .... 



Diary of Societies .... ... 



PAGI 

 203 

 204 



205 

 205 



206 

 207 

 207 

 208 



212 



2It 



212 



213 



213 

 213 



215 

 216 

 217 

 218 



2-7 



227 

 228 



233 



2.?S 

 2\() 



