2,6b 



NATURE 



[June 



1913 



Unsere Kohlen. By P. Kukuk. Pp. x+120 + plate. 

 (Leipzig: B. G. Teubner.) 1.25 marks. 



Problemes de Mecanique et Cours de Cinematique. 

 By Prof. C. Guichard. Pp. 156. (Paris : A. Her- 

 mann et Fils.) 6 francs. 



Lemons de Thermodynamique. By Dr. M. Planck. 

 Translated by R. Chevassus. Pp. 310. (Paris : A. 

 Hermann et Fils.) 12 francs. 



Western Australia. Meteorology of Australia. 

 Commonwealth Bureau of Meteorology. Results of 

 Meteorological Observations made in Western Aus- 

 tralia during 1908. Pp. 130 + maps. (Perth, W.A. : 

 F. W. Simpson.) 



Guide-Annuaire du Gouvernement General de Mada- 

 gascar et Dependances. Annee 1913. Pp. viii + 788. 

 (Tananarive : Imprimerie Officielle.) 



Die Ziichtung kolonialer Gewachse. Edited by C. 

 Fruwirth. Pp. XIX+1S4. (Berlin: P. Parey.) 9 

 marks. 



Grundriss der Kristallographie. By Dr. G. Linck. 

 Dritte Auflage. Pp. viii + 272 + iii plates. (Jena: G. 

 Fischer.) 11.50 marks. 



Das Pflanzenreich. Edited by A. Engler. 59 Heft 

 (iv + 251). Hydrophyllaceae. By A. Brand. (Leip- 

 zig : W. Engelmann.) 10.60 marks. 



An Elementary Treatise on Calculus. Bv W. S. 

 Franklin, B. MacNutt, and R. L. Charles. ' Pp. x + 

 253 + 41. (S. Bethlehem, Pa.: The Authors, Lehigh 

 University.) 2 dollars. 



Plants and Their Uses. Bv F. L. Sargent. Pp. 

 x + 610. (New York: H. Holt" and Co.) 



The Wanderings of Animals. By Dr. H. Gadow. 

 Pp. vi+150 + maps. Wireless Telegraphy. By Prof. 

 C. L. Fortescue. Pp. vi+143. Beyond the Atom. 

 By Prof. J. Cox. Pp. 151. Submerged Forests. By 

 C. Reid. Pp. 129. Bees and Wasps. By O. H. 

 Latter. Pp. vi+132. (Cambridge Manuals of Science 

 and Literature.) (London : Cambridge University 

 Press.) is. net each. 



A Junior Course of Arithmetic. By H. S. Jones. 

 Pp. ix + 224. (London: Macmillan and Co., Ltd.) 

 15. 6d. 



Practical Bacteriology, Microbiology, and Serum 

 Therapy (Medical and Veterinary). By Dr. A. 

 Besson. Translated and adapted from the fifth 

 French edition bv Prof. H. J. Hutchens. Pp. xxx + 

 892. (London : Longmans and Co.) 36s. net. 



Liquid Steel : its Manufacture and Cost. By D. 

 Carnegie, assisted bv S. C. Gladwyn. Pp. xxv + 

 520 + x plates. (London : Longmans and Co.) 255. 

 net. 



The Bodley Head Natural History. Vol. i., British 

 Birds. Passeres. By E. D. Cuming. Pp. 120+ iii 

 plates. (London : J. Lane.) 2s. net. 



DIARY OF SOCIETIES. 



THURSDAY, June 5. 



Roval Society, at 4.30.— Croonian Lecture: The Origin of Mammals : 



Pllr R. Broom.— The Fossil Floras of ihe Wyre Fore-t. with Special 

 Reference to the Geology of the Coalfield and its Relationships to the 

 Neighbouring Coal Measure Areas : Dr. E. A. Newell Arber. 



Roval Institution, at 3.— Recent Chemical Advances. III. The Structure 

 of Crystals : Prof. W. J. Pope. 



Linnean Societv, at 8.— A Contribution to the Flora and Plant Forma- 

 tions of Kinabalu and the Highlands of British North Borneo: Miss 

 L. S. Gibbs.-TheHvdror.hilidie: HisteridK of the Percy Sladen Expe- 

 dition to the Seychelles : H. Scott.— Marine Alga: from the Indian Ocean : 

 Mme. Weber van Bosse. — Myrmeleonirla; horn the Indian Ocean: J. G. 

 Needham. — Rhynchota of the Seychelles: I. Heteroptera : W. L. 

 Distant.— Mystroretalon, Harv. : Prof. R. J. Harvey Gibson. 



FRIDAY, June 6. 

 Roval Institution, at q. — Reflection and Refraction of Light as Con- 

 cealing and Revealing Factors in Sub-aquatic Life : F. Ward. 

 Geologists' Association, at 8.— Palaeolithic Man in the Thames Valley : 

 H. Dewey. 



SATURDAY. June 7. 

 Institution, at 3.— Radio-activity. III. The Radio-a 



MONDAY, June 9. 

 Royai. Geographical Society, at 8.30.— Across Southern Jubaland to the 

 Lorian Swamp : I. N. Dracopoli. 



TUESDAY, June 10. 

 Royal Anthropological Institute (Roval College of Surgeons, Lin. 

 coin's Inn Fields. W.C.), at 2.30. — Racial Migrations in Africa : Sir H. H 

 Johnston. 



WEDNESDAY, June ii. 

 Geological Society, at 8.— Certain Upper Jurassic Strata of England : 

 Dr. H. Salfeld.— The Volcanic Rocks ot the Forfarshire Coast and their 

 Associated Sediments: A. [owett.— Metam .rphosed Sediments between 

 Machakosand Lake Magadi (British East Africa): J. Parkinson. 

 THURSDAY, June 12. 

 Royal Society, at 4.30. — Probable Papers: Recent Researches on 

 the Palatine in Relation to Geology, Ethnology, and Physics : Com- 

 mendatore Boni.— The Trvpanoso11.es causing Dourine (Mai de Coit or 

 ReschSlseuche) : Dr. P.. Blaiklock and Dr. W. Yotkc.-The Growth and 

 Sporulation of the Benign and Malignant Tertian Malarial Parasites in the 

 Culture Tube and in the Human Host : J. G. Thomson and D. Thomson. 

 FRIDAY, June 13. 

 Royal Astronomical Society, at 5. 

 Malacological Society, at 8. — No 

 Fischer, and Descriptions 



Species ai 

 1 the Freshwat 



*nus Pseudomalaxis. 

 a New Subgenus : 

 Marques de Monterosato.— Note on the Freshwater Mollusca found with 

 Unio Auriculatus, Spengl, ..1 Barn Elms, Surrey- A. S- Kennard and 

 B. B. Woodward.— The Land Mollusca of the Kermadec Islands : Tom 

 Iredale.— Definitions of Further New Genera of Zonitida: : G. K. Gude. 

 Physical Societv, at S — *-ome Experiments on Tinfoil Contact with 

 Dielectrics' G E. Bairsto. — A Method of Measuring the Pressure of 

 Light by Means of Meial Foil : G. D. West. 



of the Earth and Atmosphe 

 Lectures.) 



Prof. E. Rutherford. (The Tyndall 



CONTENTS. page 



Dynamics of Golf. By Dr. C. G. Knott 341 



The Age of the Earth. By J. P 343 



Popular Botany and Gardening. By Dr. F. Cavers . 344 



Our Bookshelf 345 



Letters to the Editor: — 



A Plea fci Uniformity in Radio-nctive Nomencla- 

 ture. — Dr. William H. Ross ; Dr. H. Jermain 



Creighton 347 



Pianoforte Touch.— Christopher W. C. Wheatley 347 

 On the Habitat of Protodrilus and the Occurrence of 

 the Archiannelid, Saccocirrus, on the South Coast 



of England.— J. H. Orton 34& 



Sub-Red Crag Flint Implements and the Ipswich 



Skeleton.— 'W. H. Sutcliffe . . . 348 



Antennae for Wireless Telegraphy. — A. A.Campbell 



Swinton 348 



Use of a Carbon Filament Lamp to Charge Electro- 

 scopes. — R. Whiddington 348 



Naid or Tubificicl ? — Rev. Hilderic Friend .... 349 



Work of the Eugenics Record Office. By E. H.J. S. 349 



Lord Avebury, F.R.S 350 



Prof. J. T. Nicolson 3SI 



Notes 351 



Our Astronomical Column : — 



Periodic Spectrum of 12 Canes Venatici 356 



Position of ihe Axis of Mars 35° 



The Solar Eclipse of April 16-17, I9 12 35^ 



The Spectrum of Nova Geminorum No. 2 357 



Science, Politics and Progress 357 



Joint Meeting of British and French Electrical 



Engineers 359 



Prof. Bergson on Psychical Research 360 



Exposure of Thermometers for the Determination 



of Air Temperature 361 



Hydrography in Italy 361 



Positive Rays of Electricity. By Sir J. J. Thomson, 



O.M., F.R.S 362 



University and Educational Intelligence 362 



Societies and Academies 363 



Books Received 365 



Diary of Societies 366 



2275, VOL. gi] 



Editorial and Publishing Offices : 



MACMILLAN & CO., Ltd., 



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



dvertisements and business letters to be addressed to the 

 Publishers. 



Editorial Communications to the Editor. 

 Telegraphic Address: Phusis, London. 

 Telephone Number : Gerrard 8830. 



