540 



NATURE 



[February 15, 191 2 



pp. viii+156. The Natural History of Clay. By A. B. 

 Scarle. Pp. viii+176. The Modorn Locomotive. By 

 C. E. Allen. Pp. ix+174. Karthworms and their .Allies. 

 By F. E. Heddard, F.R.S. Pp. vijj+i5o, (Cambridjie 

 Manuals of Science _ and LiteratUrV.J (Cambridge : Uni- 

 versity Press.) \i. net each. ''^ 



Micropetrolofjy for Beginners. By J. E. VV. Rhodes. 

 Pp. xv+126. (London: I^ongmans and Ot>.) 2s. 6d. net. 



National Insurance. By A. S. Comyns Garr, W. H. S. 

 Garnett, and J. H. Taylor, with a Preface by the Rt. 

 Hon. D. Lloyd George, M.P. Pp. x.\x + 504. (London : 

 Macmillan and Co., Ltd.) 65. net. 



Siam ; a Handbook of Practical, Commercial, and 

 Political Information. By A. W. Graham. Pp. xvi + 637. 

 (London : A. Moring, Ltd.) los. 6d. net. 



Lessons in Geometry. By Dr. C. McLeod. Part i. 

 Pp. xii + 212. (Aberdeen: University Press.) 2s. 6d. net. 



La Pila Elcttrica. By A. .-Xstolfoni. Pp. xv + 297. 

 (Milan : U. Hoepli.) 3 lira. 



On the Mesozoic Rocks in some of the Coal Explorations 

 in Kent (Memoirs of the Geological Survey, England and 

 Wales). By G. W. Lamplugh, F.R.S. , and Dr. F. L. 

 Kitchin. Pp. vi + 212. (London: H.M. Stationery Office; 

 E. Stanford, and others.) 35. 6d. 



Wimbledon Common, its Geology, Antiquities, and 

 Natural History. By W. Johnson. Pp. 304. (London : 

 T. Fisher Unwin.) 55. net. 



Theorie und Praxis der Grossgasindustrie. By R. 

 Mewes. i. Band, i. Halfte. Pp. xx + 403. (Leipzig: 

 H. S.. L. Degener ; London: Williams and Norgate.) i8s. 

 net. 



The Natural History of the Bible. By the late Dr. 

 H. B. Tristram. Tenth edition. Pp. viii + ?2o. (London: 

 S.P.C.K.) 5s. 



Outlines of General Chemistry. By Prof, W. Ostwald. 

 Translated, with the author's sanction, by Dr. W. W. 

 Taylor. Third edition. Pp. vi + 596. (London: Mac- 

 millan and Co., Ltd.) 175. net. 



DIARY OF SOCIETIES. 



THURSDAY, February 15. 

 KovAL Society, at 4.30.— An Alleged Specific Instance of the Trans- 

 mission of acquired Characters— Investigation and Criticism : Dr. T. G. 

 Brown.- -Further Experiments on the Cross-breeding of two Races of 

 the Moth Acidnlia virgufilaria : \V. B. Alexander. — On the Effects of 

 Castration and Ovariotomy upon Sheep : F. H. A. Marshall.— The 

 Causes and Prevention of Miners' Nystagmus: Dr. T. L. Llewellyn. — 

 The Stomatograph : W. L. Balls. —Composition of the Blood G.ises 

 durine the Respiration of Oxygen : G. k. Buckmaster and J. A. Gardner. 

 RovAL Geographical Society, at 5.30.— Desert of North Africa : Captain 



H.G., Lyons, F.R.S. 

 Institution of Mining and Metallurgy, at 8.— On the Theory of Blast- 

 Roasting of Galena : C. O. Bannister. — Quick Combination >lethods in 

 Smelter Assays : A. T. French.— .-^ Graphic Method of Illustrating the 

 Results of Extraction Tests : H. K. Picard. 

 LiNNEAN Society, at 8.— An Investigation of the Seedling Structure in 

 the Leguminosae : R. H. Complon. 



FRIDAY, Fkrruary i6. 

 Royal Institution, at 9.— The Road: Past, Present and Future: Sir 



John H. A. Macdonald, K.C.B., F.R.S. 

 Institution of Mechanical Engineers, at 8. — Annual General Meeting. 

 Institution of Civil Engineers, at 8.— Works for the Pre\ention of 



Coast-erosion : W. T. Douglass 

 Geological Society, at 8.— Anniversary Meeting. 



MONDAY, February 19. 

 Royal Society of Arts, at 8.— The Meat Industry. The Pig and its 



Products : Loudon M. Douglas. 

 Victoria Institute, at 4.30.— The Real Personality or Transcendental 

 Ego : S. T. Klein. 



TUESDAY, February 20. 

 Royal Institution, at 3.— The Study of Genetics : Prof. W. Bateson, 



F.R.S. 

 Royal Statistical Society, at 5— The Rate of Discount and the Price 

 of Consols : T. T. Williams.— The Rate of Interest since 1844: R. A. 

 Macdonald. 

 Zoological Society, at 8.^o.— Notes on Age-determination in Scales of 

 Salmonoids, with special reference to Wye Salmon : Dr. A. T. Masier- 

 m.-in.— Studies on Pearl Oysters. I. The Struc .ure of the Shell and 

 I'earU of the Ceylon Pearl Oyster {Margaritir'era vulgaris, Sciiumacher), 

 with an examination of the Cestode Theory of Pearl Production : Dr. H. 

 Lyster Jameson.— Mimicrj- amongst the Blatiida? ; with a Revision of the 

 r.enus Prosopltcta, Sauss : Robert Shelford.— Contributions to the Know- 

 1 dge of the Spiders and other Arachnids of Switzerland : Rev. O. 

 Hickard-Cambridge, F.R.S. 

 Royal Anthropological Institute, at S.iq.— Further Cave Explora- 

 tions in Gibraltar in September, 1911: Dr. W. L. H. Duckworth.— On 

 Some Prehistoric Monuments in the Departments Gard and Bouches du 

 Khone : A. L. Lewis. 

 Institution of Civil Engineers, at 8.— Some Features of the Wes: 



African Government Railways : F. Shelford. 

 1 1 I UMiNATiNG Engineering Society, at 8.— Discussion on Shoplighling : 

 Papers by N. W. Prangnelland A. E. Broailberry. 



WEDNESDA Y, Fkbruakv ti. 

 Royal Socirrv or Arts, at 8.— Th« British Silk IndnMry wcA n 



Development lince 1903 : K. Warner. 

 RovAL Microscopical Sf>ciitTV. at 8.— Fourth List of*New SpcciM of 



Rotifera sinrr iH-<., < . F, KouMteiei. — On the Colouring oTLantcr:. 



Slide*, Willi ! ■ Screen : E. J. Spina. • 



Royal Mfti v, at 7.30.— ITie Thundentonns of St 



ji, 1911 : J. 1 , : I hundervtoripsof July 29, 1911 : R. C. ^. 



Lempfert.— The Dr.rtonietcr, or Meaxurer of Dew : Sidney Skinner. 

 THURSDAY. FEBHtJARV 21. 

 Royal SociitTV.al 4.30.— Bakerian Lecture : 'ITie Vs-' •■ ' •'-- '^— 



Heat of Water investigated bv the Continuous M 



H. L. Callendar. V .9..?>. — ProhahU Pa^rs: 1 



Physical Observations- -Electric, Magnetic. .Meteoiwi'^^i' ''i. -•• 



— made at Kew Observatorj- • Dr. C. Chree. F.R.S.— On the 



of lonsin Dried GaMs: R. T. Lattey and H. T. Ti/arH. — Th«- ' 



tion by means of a Siring Elrctrometer of Hucttia" ' •' 



produced by y Ray» : Prof. T. H. l.aby and P. W. I 



Problem of Cauch* and Poi»son for Liqu'd of 1 



Slightly Co iiprrssible Liquid : F H. Pilduck. 

 Institution OP El. F.CTRiCAU Engineers, at 8.— The Supply and Tr.. 



mission o( Power in Selfcontained Road Vehicles and Locomotives : J. 



Macfarlane and H. Burge. 



FRIDAY, February 23. 

 Royal Institution, at 5. — The Gyrosiatic Compass and Practical Ap; 



cations of Gyrostats : George K. B. Elphinstone. 

 Physical .Society, at 5. — A Method of Accurate Comparison ol Quantii 



of Radium : Prof. E. Rutherford, F.R.S., and Mr. Chad wick.— I 



Absorption of the yrays by Gases; Mr. Chadwick. — On Wave-f' 



Sifters for Alternating Currents : A. Campbell. 

 Institution of Civil Engineers, at 8. — Works for the Preventio:. 



Coast-erosion : W. T. Douglass. 



SATURDAY, February 24. 

 Royal Institution, at 3. — Molecular Physics : Sir J. J. Thomson, F. K. 



CONTENTS. PA(.^ 



The Philosophy of Science Hy Dr. T. P. Num. 

 Two Introductions to the Study of Evolution 

 Theoretical and Practical Physics . . . 

 Indian Fresh-water Invertebrates . . 



The Physics of Electric Lamps. By M. S. 



Our Book Shelf 



Letters to the Editor: — 



Contour Diagrams of Human Crania. (With Di : 

 p-anis.) — Prof. D'Arcy W. Thompson, C.B. ;i , 



Microscope Stands. — F.K.M.S : 



The Inheritance of Mental Characters. — J. M. . . 5 



The Mnemic Theory of Heredity.— Dr. Walter Kidd ; 



Distaste of Birds for Butterflies. — H. C. Bryant . . ; 



Thomas Young and G<) tingen. — H. S. Rowell ... 5 



Glazed Frost. — Hon. Rollo Russell ; Chas. 

 Harding ; Andrew Watt ; Francis G. Belton 

 E. Wyndham Jeffreys 



Huiran Eves Shining. — T. W. Backhouse 



Chalk and' Ice.— R. W. Pocock . . . 



Candlemas Day. — Rev. O. Fisher . 

 Nature Studied in the Forests of Guiana. f/, 



h-aifd. 



NO. 2207, VOL. 88] 



Atmospheric Circulation over the Tropical A 



lantic. By E. Gold 



Precision ot Levelling Operations, Bv E. H. H. 

 Dr. Henry Taylor Bovey, F. '^.S. By E. W. M. 



Sir WilUam AUchin. By H. D. R 



Notes 



Our Astronomical Column : — 



The Changes on Saturn's Rings . . . 

 Ephemeris for Borrelly's Comet, 191 le 

 Stellar Spectra in the Visual Region 



Stellar Parallaxes 



The Spectra of Comets 



The Parallax and Proper Motion of Miia 



Contributions to the Ethnology and Archaeology 

 of North America {Illustrated). By Dr A C 



Haddon, F.R.S 



Bacterial Diseases of Plants. (Illn:trated.) 



M. C. P 



The Progress in Our Knowledge of the Transmis- 

 sion of Sleeping Sickness and Other Trypano- 



some Diseases in Africa 



Indian Fossils .... 



Juvenile Employmeiii and Continuaion Education. 



By J. Wilson . . . . 



The Pressuie of a Blow. By Prof. Bertram Hop- 



kinson, F.R.S. . 



Univeisity and Educational Intelligence . . . 



Societies and Academies 



Books Received 



Diary of Societies 



