450 



NA TURE 



[June io, 1909 



M. Dinoscu. — The hypotensive and myotic .ullon of 

 normal human urine: J. K. Abelous and K. Bardiar. 



— Till' nRlaniorphosis of the nmsciilar system in llies : 

 Charles P<po«. — I.alhraoa clandi'stiiiii, a parasite of the 

 vino in Loirc-Infcjrieure : M., Col.-'lhe strata of the 

 I'aslcrn Alps and their roots : Kmile Haug. — The existence 

 of a conglomerate and an Eocene discordance in Greece : 

 Ph. N6gri». — New observations on the strata of eastern 

 Corsica : ]•'., Maury. 



DIARY OF SOCIETIES. 



THURSDAY, June io. 



Royal Society, at 4.30. — Crooniaii Lecture : The Functions of the 

 Pituitary Body: Prof. E. A. Sch.'ifer, KR.S.— (1) A Wavelength 

 Comparator for Standards of Length ; (2) The Use of Wave-length 

 Rulings as denning Lines on Sland.irds of Length : Dr. A. E. H. Tullon, 

 F.R.S! 



Royal Institution, at 3. — A Modern Railway Prohlem— Steam v. 

 Electricity : Prof. W. E. Iialby. 



Mathkmatical Society, at 5.30.— On the Behaviour at the Poles of a 

 Series of Legendre's Functions representing a Function with Infinite 

 Discontinuities: F. J. W. Whipple. — An Analogue of Pascal's Theorem 

 in Three Dimensions ; W. H. Salmon. — Some Symbolical Expressions for 

 the Eliminant of Two Binary Quantics : A. L, Dixon. 



FRIDAY, June ii. 



Royal Institution, at o. — Problems of Helium and Radium: Sir James 

 Dewar, K.R S. 



Physical Society, at 8.— The Arthur Wright Electrical Device for 

 evaluating Formula: and solving Equations : Dr. A. Russell and Arthur 

 Wright. — The Echelon Spectroscope, its Secondary Action and the Struc- 

 ture of the Green Hg line : H. Stansfield.— The Proposed International 

 Unit of Candle Power: C. C Palerson.— InducLincc and Resistance in 

 Telephone and other Circuits : Dr. J. W. Nicholson. — Note on Terrestrial 

 . Magnetism : G. W. Walker. — On the Form of the Pulses constituting 

 White Light : A. Eagle. 



Royal Astrono.mical Society, at 5. — Obser\-alionfi of Helium D,i Absorp- 

 tion in the Neighbourhood of Sun-spots in 1908 : Capt. R. A. C. Daunt. — 

 The Constants of the Moons Physical Libration : F. ,1. M. Stratton.— 

 On certain Coefficients in the .Mgebraicnl Development of the Perturbative 

 Function: R. T. P^ Innes. — Slagnitude of tj Argt'is. 190*;: R. T. A. 

 Innes.— Recent Observations of the Rings of Saturn, and their Bearing 

 on some of the Phenomena of the Disappearance of the Rings in 1907 : 

 . E. E. B.trnard. — Ephemeris of Flora near the Time of Opposition in 1909: 

 A. M. W. Downing.— Report on the Measurement of an .Arc of Meridian 

 in Uganda: Col. C. F Close.— On the Erroneous Results of Stereoscopic 

 Observations of a Comet : E. E. Barnard. — A Method of Double Star 

 Measurement : J. B. Dale.— Note on an Electric Heater for use in a 

 Plate Holder on Damp Nights: Astronomer Royal. -/VoiiaM- /'-i/.r. 

 Numerical Example of Mr. Innes's Method for the Development of the 

 Perturbative Function : F. Robbins. 



Malacolocical Society, at 8.— Diagnoses of new Trochoid Shells from 

 North (Queensland: H. B. Preston. — Notes on some of the Ampiillariida; 

 in the Paris and Geneva Museums : C. B. Sowerby.— On the R.-idula; 

 of British Helicida: : Rev. E. W. W. Kowell. 



SATURDAY, June 12. 

 Royal Institution, at 3.— The Vitality of Seeds and Plants : (j) The 

 . Life and Death of Seeds: Dr. F. F. Blackman, F.R.S. 



MONDAY, June 14. 



RovAL Geographical Society, at 8.30. — Survey and Exploration in the 

 Ruwenzori and l.alce Region, Central Africa : Major R. G. T. Bright, 



. C.M.G. 



TUESDAY, June 15. 



Zoological Society, at 8.30.— On some Points in the Structure of the 

 I.esser Antealer {Tamamitta tctraiiactyla), with a Note on the Cerebral 

 Arteries of Myrmccophaga : F. E. Bcddard, F.R.S.— On Decapod 

 Crusl.-icea from Christmas Island, collected by Dr. C. W. Andrews. 

 F.R.S.: Dr. W. T. Caiman.— Notes on a Young Specimen of the 

 Walrus lately living in the Society's Gardens: Dr. P. Chalmers 

 Mitchell, F.R.S.— Notes on the \iscera of a Walrus (Trkliechus 

 roswarus) : R. H. Burne. 



Royal Statistical Society, at 5.— Anntial General Meeting. 



Faraday Society, at 8.— The N.ntional .ind International Conservation 

 of Water for Power: E. R. Taylor.— The Formation of Silicon Sulphide 

 in the Desulphurisation of Iron : W. Fielding. — A Contribution to the 

 Study of Electric Furnaces as applied to the Manufaciure of Iron and 

 Steel : C. A. Keller.— Automatically Circulating Furnaces of the Gin 

 Type for the Electrical Produciion of Steel : G. Gin. 



MiNEHAt.oGlCAi. SriciETV, at 8. — On C^motite and an .Associated Mineral 

 Complex from South Australia: T. Crcok and G. S. Blake.— On the 

 Species Piloliir, and the Analysis of a Specimen from China : G. S. 

 Whitby.— On Phen.acite from Braiil : Dr. tl. F. Herbert Smith.— Tlie 

 Composition and Structure ot a Meteoric Stone from the Dok.-lchi Shower 

 (1903) : H. E. Clarke and Prof. H. I^ Bowman. 



iYEDIfESDAY, June i6. 

 Gec'Locical Society, at 8. — The Carboniferous Limestone of County 

 Clare: J. A. Douglas.— The Howgill Fells and their lopography : Dr. 

 J. K. .^larr. F.R.S., .and G. W. Fe.irnsides.— The Mandible of .s//;r«»r<«x 

 ■ •.•i.i.nlalis, sp.n. : I* Glauert.— (i) On some Reptilian Remnins from 

 the Trias of Lossicmoulh : (2) On some Reptilian Tracks from the 

 I ri.iv of Runcorn : (3) The Anatomy of LefulophU'los larkinus, Stemb : 



turea : Dr. W. Schmidt and E. Gold.- A Plea for the Use of Freely- 

 exposed Thermometers in Addition to Sheltered Ones : L. C, W. 

 Bonacina. 



Royal Microscoi'Ical Society, at 8. 



THURSDAY, June 17. 



Royal Society^ at 4.30. — FrobabU Paptn : On the Origin of 

 Certain Lines in the Spectrum of f Oiionis (AInitnm) : Sir Norman 

 Ixjckyer, K.C.B., F.R.S., F. E. Baxandall, and C. P. Bullet. -On 

 Electrostatic Induction through Solid Insulators: Prof. H. A. Wilson. 

 F.R.S.— The Effect of Pressure on the Band Spectra of the Fluorides 

 of the Metals of the Alkahne E.irths: R. Rossi.— The lonisalioi, 

 produced by an o Particle. Part I. : Dr. H. Geiger— On the DilTu^' 

 Reflection of the a P.article : Dr. H. Geiger .-ind E. Marulen.— The 

 Decay of Surface Waves produced by a Superposed Layer of Viscoii- 

 Fluid : W. J. Harrison.— The Passage of Electricity through Gaseous 

 Mixtures: E. M. Wellisch.-A Study of the Use of Photographic Plates 

 for the Recording of Position : C. E. K. Mees.— The Coefficients of 

 Capacity and the Mutual Attractions or Repulsions of Two Electrified 

 Spherical Conductors when close together : Dr. Alexander Russell. 



LiNNRAN Society, at 8. — On the Growth of a Species of Battarea : 

 J G. A. Tepper.— The Deposits in the Indian Ocean: Sir John Murray, 

 K.C.B., F.K.S.— The Slalark I'crseidea. Stenopidca, and Reptantia : 

 L. A. ltorr.ad.tile.-The SraUrk Polychaeta. Part II.: F. A. Potts.- 

 'I'he Sealark Lepidoptera : T. Bainbrigge Fletcher. — New Species of 

 Malesian and Philippine Ferns : Dr. H. Christ.— The African Species' 

 of Triumfetta, Linn : T. A. Sprague and J. Hutchinson. — The 

 Acaulescent Species of Malvastrum : A. Gray and A. W. Hill. 

 FRIDAY, June i8. 



Royal iNSTrruTioN, at 9.— A Recent Visit to the Panama Canal: A. H. 

 Savage Landor. 



I J. M. S, W.tlson 



^^VAl. MKTEOKOLOr.lCAL So 



of Temi>eratuTe in Antai 

 Mossman.- Testing of Reg 



Y, at 4.30.— The Interdiumal Variability 

 and Suh-Antarclic Regions: R. C. 

 ng B.illoon Apparatus at Low Temficra- 



CONTENTS. PAGE 



Tiiial Friction. By A. E. H. L 421 



Paper-making 422 



Hints for Mineral Collectors. i5y G. F. H. S. . . . 423 



The Plant Kingdom 424 



The Comparative Physiology of Man 424 



Practical Physics. Hy H. C. O'N 425 



Our Book Shelf:— 



Palerson : "School .\l(jebra " 426 



" Elizi l!rii;htwen : the Life and Thoughts of a 



Naturalist." — R. L 426 



Wrench: " The Grammar of Life" 426 



Letters to tbe Editor : — 



The Need of a Great Reference Library of Natural 

 Science in I^ondon. — Sir E. Ray Lankester, 



K.C.B., F.R.S 427 



Vapour-density and Smell. — Dr. Alex. Hill .... 427 

 The Germ-layer Theory. —J. Stanley Gardiner, 



F.R.S. ; The Reviewer 42S 



Gaskell's "Origin of Veitebrates."— Dr. W. H. 



Gasktll, F.R.S 428 



" lilowin^ ' Wells. — Beeby Thompson 429 



Dew-runils. —Arthur Marshall 429 



The Colours of Leaves. — George Abbott 429 



A Great Naturalist, (l.lmlratid.) ByJ. S. G. . . . 430 

 An Angler in North America. (Il/uslraled.) By 



G. W. L 431 



The Water Supply of Kent. By M. B. . . - ... 432 



The Winnipeg Meeting of the British Association . 432 



The Darwin Centenary Celebration 433 



Notes 434 



Our Astronomical Column : — 



The Kings of Saturn 439 



Changes in ihe Figure and Dimensions of the Sun . . 439 



Camera Objectives for Spectrographs 44° 



The Aslrographic Conference at Paris 440 



The American Philosophical Society 443 



The Italian Earthquake of December 28, igo8. 



(»•/.'/, .1/,A) 445 



The Royal Observatory. Greenwich 446 



The Association of Teachers in Technical Institu- 

 tions 446 



Economic Zoology 447 



University and Educational Intelligence 44S 



Societies and Academies 44$ 



Diary of Societies 450 



NO. 2067, VOL. 80] 



