308 
NATURE 
[May 13; 1915 


Bacon’s Conteur Atlas. Lancashire and Yorkshire 
edition. Pp. 41. South Wales edition. Pp. 41. 
North. England edition. Pp. 41. (London: G. W. 
Bacon and Co., Ltd.) Each 6d. net. 
Infant Mortality; By Dr. H. T. Ashby. Pp. x+ 
229. (Cambridge: At the University Press.) tos. 6d. 
net. 
A First Geography of the British Isles. By W. M. 
Carey. Pp. vi+169. (London: Macmillan and Co., 
Ltd.) is. 6d. 
Haeckel’s Frauds and Forgeries. 
muthicand E. R. Hull. Pp. 104: 
Herder.) 6d. net. 
Combinatory Analysis, by Major P. A. MacMahon. 
Vol. i. Pp. xix+300. (Cambridge: At the Univer- 
sity Press.) 15s. net. 
The Medical Annual, 1915. Pp. cxx+830. (Bris- 
tol: J. Wright and Sons, Ltd.; London : Simpkin and 
Co., Ltd.) os. net. 
By Prof. J. Ass- 
(London: B. 

DIARY OF SOCIETIES. 
THURSDAY, May 13. 
Rovat Society, at 4.—Election of Fellows. At 4.30.—The Deve- 
lopment of the Thymus, Epithelial Bodies and ‘Thyroid in the 
Vulpine Phalanger (77zchosurus vulpecula): Elizabeth A, Fraser and 
Prof. J. P. Hill,—Some Observations on the Development of the Thymus, 
Epithelial Bodies and Thyroid in Phascolarctos, Phascolomys and 
Perameles: Elizabeth A. Fraser.—Measurement of the Svecific Heat 
of Steam at Atmospheric Pressure and 104°5° C., with a Preface by Prof. 
H. L. Callendar.—Thermal Properties of Carbonic Acid at Low Tem- 
peratures. II.: C. F. Jenkin and D. R. Pye. 
Rovav InsTITUTION, at 3.—The Movements and Activities of Plants: 
Prof. V. H. Blackman. . 
Royat Society OF ArTS, at 4.30.—Indian Trade and the War: Sir C. H. 
Armstrong. 
TRON AND STEE!. INSTITUTE, at 10.30.—A Selection of : Diffusion of Carbon 
in Iron: F. W. Adams.—Supplementary Notes on the Forms in which 
Sulphides may exist in Steel Ingots. II.: Prof. J. O. Arnold and G. R. 
Bol-sover.—Researches on Iron, Silicon and Carbon Alloys: G. Charpy 
and A. Cornu.—Corrosion of Iron in Aqueous Solutions of Inorganic 
Salts: Dr. J. A. Newton Friend and P. C. Barnet.—(1) Relative Corro- 
dibilities of Gray Cast Iron and Steel; (2) Note on the Removal of Rust 
by means of Chemical Reagents: Dr. J. A. Newton Friend and C. W. 
Marshall.—Co nmunication on the Heating of an Open-hearth Furnace 
by means of Tar: Dr. A. Greiner.—Sound Steel Ingots and Rails: Sir 
R. A. Hadfield and Dr. G. K. Burgess.—The Nature of the As ‘l'rans- 
formation in Iron: K. Honda.—Brinell Hardness and Tenacity Factors 
of a series of Heat-treated Special Steels; Dr. A. McWilliam and E. J. 
Barnes.—Thermo-electric Properties of Special Steels: A: M_ Portevin 
and E. L. Dupuy.—Stress-strain Loops for Steel in the Cyclic State: Dr. 
J. H. Smith and G. A. Wedgwood.— Detection. of Burning in Steel, and 
Iron, Carbon, and Phosphorus: Dr. J. E. Stead. 
FRIDAY, May 14. 
Roya. InstiTuTION, at 9.—The Archives of Westminster Abbey: Rev. 
E. H. Pearce. 
IRON AND STEEL INSTITUTE, at 10.30.—A Selection of Papers mentioned 
above. 
Royat ASTRONOMICAL SociETy, at 5.—Measures of Double Stars: E. 
Doolittle.—The Mechanics of Spiral Nebule: S. Brodetsky.—Note on 
Schjellerup's Discussion of the Occultations in the Amalgest: J. K. 
Fotheringham.— he Irregular Movement of the Karth’s Axis of Rota- 
tion : Contribution towards the Analysis of its Causes: Sir J. Larmor and 
Col. Hills. —Note on the Solution of Hill’s Equation: Sir J. Larmor.— 
A Method of Solving Spherical ‘l’riangles, etc., by the Use of a Simple 
Table of Squares: H. H. Turner.—The Short Period Variable RR Lyre: 
C. Martin and H. C. Plummer.—Preliminary Discussion of Three Year's 
Observations with the Cookson Floating Zenith Telescope : H. S. Jones. 
—The Greenwich R—D System: W. G. Thackeray.—Probable Paters : 
A Determination of the Systematic Motions of the Stars from their Radial 
Velocities: A. S. Eddington and W. E. Hartley.—The Serious Fffect of 
Suspension on the Kate of a Watch: J. J. Shaw.—Dates of Maximum of 
S Herculis: T. E. R. Phillips. 
InstiTUTION OF MECHANICAL ENGINEERS, at 8.—The Distribution of 
Heat in the Cylinder of a Gas-engine: Prof. A. H. Gibson and W. J. 
Walker. 
MALACOLOGICAL Society, at 8.—A Dihranchiate Cephalopod (Plesioteuthis) 
from the Lithographic Stone of Bavaria: G. C. Crick.—Description of a 
New Species of Zingis from British South West Africa: J. R. le B. 
‘Yomlin.—Diagnosis of a New Species of Dyakia: G. K. Gude. 
Puysicat. Society, at 8.—Precision Resistance Measurements with Simple 
Apparatus: E. H. Rayner.—Some Novel Laboratory Experiments: F. W. 
Jordan.—Electrically Maintained Vibrations: S. Butterworth. 
SATURDAY, May 15. 
Roya InstiTuTION, at 3.—Advances in the Study of Radio-active Bodies: 
Prof. F. Soddy. 
MONDAY, May 77. 
Royat. GEOGRAPHICAL Society, at 3.—Anniversary Meeting. 
Victoria INSTITUTE, at 4.30.—Weights and Measures of the Hebrews: 
Prof. R. S. Kennedy. 
ARISTOTELIAN SociETy, at 8.—Synthesis and Complexity (Bergson): Miss 
K. Costelloe (Mrs. Stephen). 
Roya. Society or Arts, at 8.—Foodstuffs: Dr. D, Sommerville. 
NO. 2376, VOL. 95] 


, “¥ TUESDAY, May 18. : 
Rovat InstTiITUTION, at 3.—Advances in the Study of Radio-active Bodies = 
Prof. F. Soddy. 
Royat STATISTICAL SOCIETY, ats. 
Rovat. ANTHROPOLOGICAL INSTITUTE, at 8.15.—Who were the Cliff- 
dwellers? : Dr. J. O. Kinnaman. 
ILLUMINATING ENGINEERING SOCIETY at 8 15.—Discussion : Some Points 
in connection with the Lighting of Rifle Ranges. 
WEDNESDAY, May 19. 
Roya METEOROLOGICAL Society, at 4.30.—The Wet English Winter of 
1gtg—1915: Dr. H. R. Mill and H. E. Carter.—Report on the Pheno- 
logical Observations for 1914 : J. E. Clark. 
Roya Society OF Arts, at 8. 
Royat Microscopicat Society, at 8.—The Male Genital Armature of 
the Dermaptera: Dr. Malcolm Burr. 
THURSDAY, May 20. 
Royat Society, at 4.30.—/0bable Papers: The Corpuscular Radiations 
Liberated in Vapours by Homogeneovs X-Radiation: H. Moore.—The 
Absorption in Lead of y Rays Emitted by Radium B and Radium C = 
H. Richardson. —The Application of Interference Methods to the Study 
of the Origin of Certain Spectrum Lines: 1. R. Merton. 
Rovat InstiruTION, at 3.—The Movements and Activities of Plants: 
Prof. H. Blackman. 
INSTITUTION OF MINING AND METALLURGY, at 8. 
AERONAUTICAL SOCIETY, at 8.30.—Wilbur Wright Memorial Lecture—The 
Rigid Dynamics of Circling Flight: Prof. G, H. Bryan. 
FRIDAY, May 21. 
Royat InstTITUTION, at 9.—Beauty, Design, and Purpose in Foraminifera = 
E. Heron-Allen. 
SATURDAY, May 22. 
Roya InsTiTUTION, at 3.—Colouring Matters of Nature: Dr. M. O. 
Forster. 

CONTENTS. PAGE 
Physical Constants. By Dr, J. A. Harker, F.R.S.. 281 
The Preservation of Wild Life in America. By 
15 JS Fr fe ec ee BS RPA Shoe bo 281 
EHoursDimensions. By Gi BaMl 2.5 5 alee 
mhreesBotanical Books) 2c) eminence 
Our Bookshelf aoe St ES aids, on Re 
Letters to the Editor:— 
Ultra-Violet Excitation of the D Line of Sodium.— 
Hon. R. J. Strutt, F.R.S. seis P28 
The Green Flash.—John Evershed, F.R.S. . . . 286 
The Larger Jons in the Air. (Wzth Diagrams.)— 
Prof. J. A. Pollock eek oe 2 286 
Similitude in Periodic Motion.—Prof. Herbert 
Chatley , ; 1 Sn Cs henge . . 288 
A Simple Direct Method for the Radius Curvature 
of Spherical Surfaces. (With Diagram.)—Prof. 
Will C. Baker ape k = To eae a ee 
House-Flies as Carriers of Disease. (With Dia- 
grams.) : ; Siete , ; 289 
The Resurrection of Babylon, (J//ustrated.) By 
Rev. Dr. C. J. Ball 292 
c Re Woenee 
Science and Invention. (///ustrated.) By Edwin 
Edser 5 7 skims 2 Peres Sho. io. 7187) 
The Government and Chemical Research ... . 295 
Sir William R. Gowers, F.R.S. . hice: 2a tareeezaO. 
NN ChCch A Si Ens Is cos a ocd ce a 26h) 
Our Astronomical Column :— 
Meteors from Halley’s Comet). 2 4.) «ene door 
Comet 19152 (Mellish) ties, een ayo re > ater ole 
The Australian Solar Observatory. . ...... . 301 
Photographing’ the! Coronal 2s) seein =) ter a OE 
Circulars of the Union Observatory, Johannesburg . - 301 
Shellfish/and Sewage. By JoJo 92) 0%) = se. e830 
Length Standards and Measurements ..... . 302 
PliocenesMan’ < : .. ': a PAD ice Qe te Ted, 2853 
Systematic Zoology of the Invertebrata . ... . 303 
University and Educational Intelligence ..... 304 
Societiesiand’ Academies 42 5 5 2 .cee-) ©) onaneneeOS 
Books Received MPP to Clone, 6S Sy 
DiarysofeSocieties; . . 5, a.)5 a ee eo) ce 



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