5o8 



NATURE 



(June 8, 191 1 



DIARY OF SOCIETIES. 



THURSDAY. Jdnk 8. 



RovAi. Institution, at 3.— Practical I'rogress in Wircle»« Telegraphy: 

 T. Thorne Baker. 



Mathematical Society, at 5.30.-00 the Muliiplication of Dirichtet's 

 Scries : O. H. Hardy.— On the Range of Morel* Method for the Sum- 

 mation of Seriei : G. H. Hardy and J. K. I.ittlewood.— On the Con- 

 vergence of Fourier Series and of the Allied Series : Dr. W. H. Young.— 

 On some Two-dimensional Problems in Klectrostatics and Hydro- 

 d>'namic« : W. M. Page.— On Oroups of Linear Substitutions of Kinite 

 Order with Rational Coefficient* : Prof. W. Burnside. 

 FRIDAY, )vvv. 9. 



ftovAL Institution, st o.— Applications of Physical Chemistry to the 

 Doctrine of Immunity : Prof. S. Arrhenius. 



RovAL Astronomical S(m:iktv, at 5.— (i) The Transformation of the 

 Moon's Latitude ; (a) On the Progress of the New Table.s of the Moon's 

 Motion: Ernest W. Brown. — Me.asures of the Proper Motion Star Sh. 

 100: S. W. Burnham. — Further considerations relating to the Systematic 

 Motions of the Stars : J. Halm.— Observations of Saturn's Ninth Satellite 

 (Phoebe): Royal Observatory, Greenwich. — On the Detection of a New 

 Element (Dysprosium) in the Solar Chromosphere : Alex. D. Ross. — 

 Probable Papers : On the Law which Governs the Variations of SS 

 Cygni : E. T. Whittaker. — Preliminary Results of the Photographic 

 ^lethod of obtaining Difl'erential Places of Reference Stars: H. H. 

 Turner. — The Hartmann-Cornu Formula: F. J. M. Stratton. — The 

 Galactic Distribution of Gaseous Nebuiz : A. R. Hinks. 



Physical Society, at 8.— The Liiders Lines on Mild Steel : W. Mason.— 

 Exhibition of a Model illustrating the Passage of a Light Wave throujh 

 Quartz : Dr. H. S. Allen. — Table.s of Circular and Hyperbolic Functions 

 for Complex Values of the Argument : A. Johnstone. — On the Measure- 

 ment of Contact Diff'erences of Potential : Prof. Anderson and J. G. 

 Bowen. — Exhibition of some Gyroscopic Apparatus : Sir G. Greenhill. — A 

 New Method of .Approximate Harmonic Analysis by Selected Ordinates : 

 Prof. S. P. Thompson. F.R.S. 



Malacological Society, at 8. — Description of a New Species of Acmsea 

 from Bombay and Notes on other Forms from that locality : E. A. Smith. 

 — Description of Three New Species of Operculate Land Shells from 

 Grand Cayman Island : H. B. Preston. — Further note on Preoccupied 

 Molluscan Generic Names and Proposed New Names : G. K. Gude. 



Geologists' Association, at 8.— The Geology of the District of the 

 Bergen Arches : Dr. C. F. Kolderup.— The Rock Formation of the 

 Bergen District : Horace W. Monckton. 



SATURDAY, June 10. 



Royal Institution, at 3.— Types of Greek Women : Dr. W. L. Courtney. 



Aristotelian Society (at Corpus Christi College, Oxford), at 9.— Real 

 Being and the Object of Thought : G. F. Stout. 

 MONDAY, JtiNK I a. 



Society of Chemical Industry, at 8.— Observations on Cotton and 

 Nitrated Cotton. Part III.: H. de Mosenthal. — Methods of Testing 

 Inflammable Gas and Vapour Detectors: A. Philip and T. Stenhouse. — 

 A New Form of Automatic Detector of Inflammable Gases and Vapours : 

 A. Philip and L. G. Steele. 



Royal Geographical Society, at 8.30.— Some Explorations in the 

 Himalayas : Dr. Arthur Neve. 



Institute of Actuaries, at 5.— Annual General Meeting. 

 TUESDAY, Junk 13. 



Zoological Society, at 8.30.— On Antelopes of the Genera Madoqua and 

 Rhyncbotragus from Somaliland: Dr. R. E. Drake- Brockman.— On an 

 Amphipod from the Transv.ial : Hon. Paul A. Methuen.— 'I he .Somali 

 Rhinoceros and the Nigerian Klipspringer : R. Lydekker.— A Contri- 

 bution to the Ornithology of Western Colombia : C. E. Hellmayr.— The 

 Subspecies of the Spanish Ibex : Prof. Angel Cabrera. 



Royal Anthropological Institute, at 8.15.- The Saints of the Indus 

 Valley: Major A. J. O'Brien. 



Royal Statistical Society, at 5.30. — Under the Crown: Sir J. 

 Athelstane Baines. 



Mineralogical Society, at 5.30.— On ZIrkelite from Ceylon : G. S. 

 Blake ; with Notes on the Crystallography of the Mineral : Dr. G. F. H. 

 Smith; and on the Chemical Composition: Dr. G. T. Prior. — Note on 

 some Crystals of Artificial Gypsum : Rev. Mark Fletcher.— The larger 

 Diamonds of South Africa : L. ]. Spencer.— Brecciation in Mineral Veins : 

 F. H. Butler.— On a New Mineral from the Binnenttjal : R. H. Solly.— 

 Prehnite from the Lizard District : Arthur Russell. 



Faraday Society, at 8.— Allotropic Forms of Metals : Prof. Ernst Cohen. 

 IVEDNESDAY, June 14. 



Geological Society, at 8.— On a Monchiquite Intrusion in the Old Red 

 Sandstone of Monmouthshire : Prof. W. S. Boulton.- Notes on the Culm 

 of South Devon. Part I., Exeter District: F. G Collins; with a Report 

 on the Plant Remains : E. A. Newell Arber ; and Notes on the Cephalo- 

 poda : G. C. Crick. 



Royal Meteorological Society, at 4 30.— The Diurnal Inequality of 

 Barometric Pressure at Castle O'er, Dumfriesshire : Dr. C. Chree, F.R.S. 

 —Rain Drop Experiments : S. C. Russell.— Investigation of the Electrical 

 State of the Upper Atmosphere, August, 1910: A. J. Makower, Dr W. 

 Makower, W. M. Gregory, and H. Robinson. 



THURSDAY, June 15. 



Royal Society, at 4.30.— Croonian Lecture : A New Conception of the 

 Glomerular Activity : Prof. T. G. Brodie, F.R.S. 



Linnean Society, at 8. 



Royal Geographical Society, at s.—Research Meeting. Report on 

 River Investigation; Dr. A. Strahan. 



FORTHCOMING CONGRESSEsT^ 



June 28, 29.— Conference on Education and Training of Engineers. 

 , .. .?V P"=*«le"' : Mr. Alexander Siemens, President of the Institution 

 ofUvil Engineers. General Secretary: Dr. J. H. T. Tudsbcrj'. 



July 18-22. — International Association of Seismology. Manchester. 

 President : Prof. Arthur Schuster, F.R.S. 



T^J'-'/;*^''";?^-r*^'^'''*^ ^ledical Association. Birmingham. President: 

 Dr. H. T. Butlm, Pres.R.C.S. 

 July 26-29.— First Universal Races Congress. University of London. 



NO. 2 171, VOL. 86] 



Pre»ident : I»rd Weardale. General S«crMary : G. Spillor, 6j South H 

 Park, Hampttead, I^ndon. 



July a9-AuG(;sT s- r.>nKre\s of French Cieognipbical Societ:- 

 Roubaix. President ••<-. 



July 30-AucusT - Swi«» Society of Natu: 



.Sciences. Soleure. I Inquiries to Sccretarir 



Dr. K ting (German) and 1": 



AuGi;sT.— Centenary of 1 - .rnity of BrMfaui. 



AiGusT 11-18.— Firut Ir.v Pedology. BniMcL 



■ 'resident : M. Alexis Sluys. Secretary : M. Vital Plas, 35 Arcane Paul 

 de Jaer, Brussels. 



August 13- 20.— Prehistoric .Society of France. Nimes. 



August ji-SErrKMUER 6.— British Association. Portsmotith. Preti- 

 dent: Sir William Ramsay, K.C.B., F.R.S. Address for inqairiet : 

 General Secretaries, Burlington House, W. 



•SEPTEMBifR 4-6. — Ontenary of the University of Chrislianta. President 

 of Festival Committee : Prof. Brogger. 



September 9-20. — International Congress of the Applications of Elec 

 tricity. Turin. President of the Committee of Honour: H.R.H. the 

 Duke of the Abruzzi. Honorary .Secretary of the Committee : Signor 

 Guido Semenza, Via S. Paolo 10, Milano International Secretary : Col. 

 R. E. Crompton, C. B., R.E., Crompton laboratory, Kensington Court, W. 



Septemder 24-30. — International Congress on Tuberculosis. Roire. 

 Address for inquiries : Honorary Secretary of the National Association for 

 the Prevention of Consumption, 20, Hanover Square, W. 



October 2-7. — Third International Congress of Hygietie. Dresden. 

 General Secretary : Dr. Hopf, Reichsstrasse 4, Dresden. 



October 15-22. — Tenth International Geographical Congrens. Rome. 

 President : Marquis Raffaele Cappelli. General Secretary : Commander 

 Giovanni Roncagli, Italian (ieographical Society, Rome. 



December 27. — American .Association for the Advancement of Science. 

 President : Dr. C. E. Bessey, University of Nebraska. Permanent Secre- 

 tary : Dr, L. O. Howard, Smithsonian Institution, Washington, D.C. 



CONTENTS. PAGE 



The "Personal Factor" in the War against Con- 

 sumption ... . . 47" 



Progress in Giils' Education. By Prof. A. 



Smithells, F.R.S 47 



Modern Gas Manufacture 47S 



The Delineation of the Eaith's Surface. By 



E. H. H 4:S 



Mathematical Text-books 4:9 



Science and Speculation 4S0 



Natives of the Argentine Republic 4S1 



Our Book Shelf . 4S1 



Letters to the Editor : — 



A House divided against itself. — J. Stanley Gardiner 4S3 

 Fishes and Medusae of the Intermediate Depths. A 

 note on the work of the Michofl Sars. — Henry B. 



Bigelow 4S3 



Mu.sical Sand. — E. R. Thomas 483 



The Protective Value of the Sticky Hairs on Young 



Leaves and Shoots. — Oswald H. Latter .... 484 

 The Teachinnr of Science in Secondary Schools. — 



G. F. Daniell 4S4 



Tune Meteors. — John R. Henry 4S4 



Daylight and Darkness. — T. W. Backhouse . . . 4S4 



Heredity and Destitution. By W. C. D. W. . . 4S4 



Plague. By Prof. W. J. Simpson . ... 4S6 



On the Blue and White Niles. (ll.ustreUed.) By 



H. G. L. . . . . . 48S 



The Structure of Hausaland and its Neighbour- 

 hood. (Illustrated.) By John Parkinson 489 



Dr. Harry Bolus. By A. B. R 490 



Notes 490 



Our Astronomical Column : — 



Nova Sagittarii No. 4 495 



The Mechanical Production of the Streamers seen in 



the Solar Corona 495 



The General Perturbations of Eros 495 



Determination of the Apex 495 



The Spectra of Comets 495 



The British Solar Eclipse Expedition. (Illustrated.) 



By Dr. W. J. S. Lockyer 496 



Physiographic Studies in the French Alps. By 



T. G. B. 499 



The Movement of Subsoil Water 499 



The Royal Observatory, Greenwich 500 



The Hard and Soft State of Metals. By Dr. G. T. 



Beilby, F.R.S 501 



Hydro-clectiic Plants in Norway and their appli- 

 cafion to Electro-chemical Industry. By A. 



Scott-Hansen 501 



University and Educational Intelligence 502 



Societies and Academies 503 



Diary of Societies 508 



Forthcoming Congresses 508 



