330 



NATURE 



[November 19, 1914 



(London : Macmillan 

 Bv Prof. 



C. R. Gibson, 

 and Co., Ltd.) 



A Suulv oi the Circular Arc Bow-Girder. By Prof. 

 A. H. (iibson and E. G. Ritchie. Pp. viii + So. 

 (London: C\)nstable and Co.. Ltd.) lo.v. bd. ncl 



Inijitrial I department of Aii^riculture for the West 

 Indite. Report on the Botanic and Experiment 

 Station, Monisrrrat, 1913-14. Pp. 26. (Barbados.) 



Reptiles and Batrachfans. By E. (i. Boulen<;er. 

 Pp. \iv + 27S. (London: J. M. Dent and Sons, Ltd.) 

 16s. net. 



Proceedings of the Liverpool Geological Society. 

 Session the fifty-fifth. 1913-14. Part 1. Vol. xii. 

 Pp. xiv + 92. (Liverpool: Liverpool Geological 

 Society.) 



The" Musical Faculty : its Origins and Processes. 

 By W. ^^■allace. Pp. yiii + 228. 

 and Co., Ltd.) 5,s-. net. 



The Elements of Physical Chemistry. 

 J. L. R. Morgan. Fifth "edition. Pp. xv + ^oh. (New 

 York : J. Wiley and Sons, Inc. ; London : Chapman 

 and Hall, Ltd.) 12s. 6d. net. 



A Handbook for Farmers and Dairymen. By Prof. 

 F. W. WoU and others. Sixth edition. Pp. xvi + 490. 

 (New York : J. Wiley and Sons, Ltd. ; London : 

 Chapman and Hall, Ltd.) 65. 6d. net. 



Philosophical Transactions of the Royal Society of 

 London. Series B. Vol. ccv. Experiments on In- 

 heritance in Parthenogenesis. By \\\ E. Agar. Pp. 

 421-489. (London : Royal Society.) 



Our Good Slave — Electricity. By 

 Pp. 246. (London : Seelev, Service 

 3.. 6d. 



The Great Ball on which we Live. Bv C. R. Gib- 

 ,son. Pp. 249. (London : Seelev, .Service and Co., 

 Ltd.) 3.<;. 6d.' 



A First Course in Mathematics for Technical Stu- 

 dents. By P. J. Haler and A. H. Stuart. Pp. vi + 125. 

 (London : Cniversity Tutorial Press, Ltd.) 15. 6d. 



Proce<'dings of the Aristotelian Society. New 

 Series. \'ol. xiv. Pp. 438. (London : Williams and 

 Norgate.) io,s\ 6J. net. 



The Analysis of Sensations and thi" Relation of the 

 Physical to the Psychical. By Dr. E. Mach. Trans- 

 lated by C. ^L Williams. Revised and supplemented 

 b}- S. Waterlow. Pp. xv4-38o. (Chicago and 

 London : The Open Court Publishing Co.) 6s. 6d. 

 net. 



Essays on the Life and Work of Newton. By 

 A. dc Morgan. Edited by P. E. B. Jourdain. Pp. 

 xiii-i-iq8. (Chicago and London: The Open Court 

 Publishing Co.^ :;5. net. 



Trees and Shrubs Hardy in the British Isles. By 

 W. J. Bean. Vol. i. Pu. kvi + 688. Vol. ii. Pp. v\ + 

 736. (London : John Murray.) 42.'>. net. 



DIARY OF SOCIETIES. 



THURSDAY, NovE.MBER 19. 



Royal Society, at 430. — Vote on the Circulation of the Atmosphere: 

 A. Mallock. — The Origin of the Indo-Gatig'tic Trough — commonly called 

 the HimalaYan Fored<-ep : Sir S. Burrard — Approximately Permanent 

 Electronic Orbit's and the Origin of Spectral Series : G. W. Walker. — 

 Spectroscopic Investigations in connexion with the Active Modification of 

 Nitrogen. IV.' A Band *^pectrum of Boron Nitride: W. Jevons. — 

 An Additional Note on the Production of High Permeability in Iron : 

 Prof. E Wilson. 



Child Study Society, at 7.30. — Development of the Practical Imagination 

 in Children : Prof. T. P. Nunn. 



LiNNEAN Society, at Z.— ffydrilla verticllata, Casparv, a New British 

 Plant: A. ]. Wilmott.— T^e Mo-ses and Hrpaticae of West Falkland 

 Islands, from the Coll'Ction= of Mrs. Rupert Vallentin : C. H. Wright. — 

 The Thysanoptera o' the West Indies: R. S. Bagnall. 



Institution of Mining and Metallurgy, at 8. — Persistence of Ore in 

 Depth: T. A. Rickard. 



fRtDAY, November 20. 

 Institution of Mechanical Engineers, at 8. — The Effect of Vacuum 

 on Steam-Turbines: G. G. Stoney. 



lf^/V/>i4K, NovfiMBER 23. 

 Faraday Society, at 8. — Discu.ssion : The Hardening of Metals. Intro- 

 ductory Addre.ss ■ Sir Robert Hadheld. — Some Recent Papers on Harden- 

 ing and Over.strain in Metals, and the Bearing on these of the Author's 



Amorphous Theory of the Hardened State: Dr. G. T. beilby.— The 

 Influence of Allotropy on the Metasiability of Met ils and its Bearing 

 on Chemistry, Phy>ics, and Technics : Prof. E. Cohen.— The Hardening 

 of Metals by Quenching : Prof C. A. Edwards.— The Interstrain Theory 

 of Hardening : Andrew McCance.— The Part Played by th<» Am <rphous 

 Pha.se in the Hardening of Steels : J. C. W. Humfrey.— (1) The Hardness 

 of Solid Solutions ; (2) A Note on Twinnings and the Martensitic Struc- 

 ture : Dr. C. H. Uesch.— Metallic Filings: Dr. !. Martin Lowry and 

 R. G. Parker. -The Hardening of Manganese Sieel : Prof. H. M. Howe 

 and A. (J. Levy.— Instruments for TeNting Hardness: H. L. Heathcote. 



RoYAi. Geographical Society, at 8.30.— The Mental Training of a 

 Traveller; Viscount Bryce. 



Royal Society of Arts, at 8.— The History and Practice of the Art of 

 Printing : R. A. Peddie. 



TUESDAY, November 24. 

 Zoological Society, at 5.30. — Exhibition of Tests of Arenaceous Fora- 

 minifera to Introduce a Discussion on the Interpretation of these Struc- 

 tures : E. Heron-Allen and A Earland.-(i) A New Fossil Reptile from 

 South Africa ; (2) Notes from Some Carnivorous Therapsids ; (3) Eunoto- 

 saufusafiicanus, Seeley, and the Ancestry of the Chclonia : D. M. S. 

 Watson.— Polychaeta from the N. E. Pacific: The Cbaeiopteridse. With 

 an Account of the Phenomenon of Asexual Reproduction in Phyllo- 

 chaetopterus and the Des;ription of Two New Species of Chstopteridae 

 from the Atlantic : F. A. Potts. 



WEDNESDAY, November 25. 

 Royal Society of Arts, at 8.— The Supply of Chemicals to Great Britain 

 and Her Dependencies : Sir W. A. Tildcn. 



THURSDAY, November 26. 



Institution of Electrical Engineers, at 8.— Power Plant Testing: 

 W. M. Selvey. 



Physical Society, at 5.— Note on the Conduction of Electricity at Point 

 Contacts : A. F. Hallimond.— Thermal Conductivity of Badly Conduct- 

 ing Solids : T. Barratt. 



CONTENTS. p.AGK 



Vitalistic Biology. By E. W. M. 303 



Britannic Geography. By G. A. J. C 304 



Nature Study for School and Home. By G. H. C. 305 



Practical Drawing 3^7 



Our Bookshelf 3°? 



Letter to the Editor:— 



Newton and the Spectrum.— C. T. Whitmell ... 308 

 The Partial Sterilisation of Soils. {Illustrated.) By 



Dr. E. J. Russell ... 308 



The Far-North Australian. {Illustrated.) By Sidney 



H. Ray .312 



The Evolution of the Petrographical Microscope. 



(Illustrated.) ByJ. W. J SH 



Dr. M. C. Cooke. By A. D. C 315 



Notes 3«6 



Our Astronomical Column :— 



Comet 1914^ (Lunt) 3^9 



Series Lines in Spark Spectra • ■ • 320 



A Brilliant Fireball 320 



Me^isured Parallaxes Summarised 320 



Report of the Paris Observatory for 191 3 320 



The Function of the Earth in Radio -Telegraphy. 



By Prof. J. A. Fleming, P.R.S 320 



The Canadian Arctic Expedition 32 « 



British Supply of Synthetic Colours 322 



Metallurgy at the Royal Mint. By H. C. H. C. . . 322 



Physiology at the British Association 322 



Agriculture at the British Association ... . 324 

 Budgets and Students of Universities and Uni- 

 versity Colleges in Receipt of State Grants . . 325 



University and Educational Intelligence 327 



Societies and Academies 32S 



Books Received 329 



Diary of Societies 33° 



Editorial nnd Publishing Offices : 



MACMILLAN & CO., Ltd., 



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



Advertisements and business letters to be addressed to the 



Publishers. 



Editorial Communications to the Editor. 



Telegraphic Address: Pnusis, London. 

 Telephone Number : Gerrard 8830. 



NO. 2351, VOL. 94] 



