43° 



NATURE 



[December 12, 1912 



\ 



of Practical Geology. By W. F. P. McLintock. Pp. 

 iv + 92. (London: H.M.S.O. ; E. Stanford, Ltd.) gii. 



From Pole to Pole. By Sven Hedin. Pp. xv + 

 407 + xxxix plates and maps. (London: Macmillan 

 and Co., Ltd.) -s. 6i. net. 



The Paean Tribes of Borneo. By Dr. C. Hose and 

 W. McDougall. Two vols. Vol. i., pp. xv + 283+143 

 plates. Vol. ii., pp. x + 374+211 plates + 4 maps. 

 (London : Macmillan and Co., Ltd.) Two vols., 42s. 

 net. 



A First Class-book of Chemistry. By E. Barrett 

 and Dr. T. P. Nunn. Pp. iv+124. (London: A. 

 and C. Black.) is. 6d. 



Die Elektrizitat. By Prof. F. Adami. Pp. 126 + 4 

 plates + 180 + 12 plates. (Leipzig: P. Reclam, Jun.) 

 1.50 marks. 



Kosmologische Gedanken. By W. Baratsch. 

 Zweite Auflage. Pp. SS + 63. (Leipzig: F. E. 

 Fischer,) 1.50 marks. 



Handbuch der vergleichenden Phj'siologie. Edited by 

 H. VVinterstein. Lief 29. Band \. Zweite Hiilfte. 

 Pp. 321-480. (Jena : G. Fischer.) 5 marks. 



.Analyse des Matiferes Colorantes Organiques. By 

 Dr. F. Reverdin. Pp. 56. (Geneva and Basle : Georg 

 and Co.) 



Vaccine Therapy : its Theory and Practice. By 

 Dr. R. W. .Allen. Fourth edition. Pp. x + 444. 

 (London : H. K. Lewis.) gs. net. 



Teacher's Manual of Biology. By Prof. M. k. 

 Bigelow. Pp. ix+113. (London: Macmillan and 

 Co., Ltd.) \s. M. net. 



K Laboratory Manual of Agriculture for Secondary 

 Schools. By Prof. L. E. Call and E. G. Schafer. 

 Pp. xv + 344. (London : Macmillan and Co., Ltd.) 

 4^. net. 



Mineralogy, kn Introduction to the Theoretical 

 and Practical Study of Minerals. By Prof. A. H. 

 Phillips. Pp. ix + 699. (London: Macmillan and Co., 

 Ltd.) i6s. net. 



Deutsches Museum : Lebensbeschreibungen und 

 LTrkunden. Georg von Reichenbach. By W. v. 

 Dyck. Pp. iv+140 + viii plates. (Miinchen : Selbst- 

 verlag des Deutschen Museuips.) 



Lleber einfache Pfianzenbasen und ihre Beziehungen 

 zum Aufbau der Eiweissstoffe und Lecithine. Bv Dr. 

 G. Trier. Pp. iv+iiy. (Berlin: Gebriider Born- 

 traeger.) 5.60 marks. 



DIARY OF SOCIETIES. 



THURSDAY. Dfcemper 13. 



Mathematical Society, at 8.— Recent Advances in the Theory of 

 Surfaces, Address bv the ex-Presid^i)t (Dr. H. F. Baker), postponed 

 from the November Meeting. — k Conneftion between the Functions of 

 Hermite and Jacob! : H. E. J Curzon.— The Equations of the Theory of 

 Electrons Transformed Relative to a System in Accelerated Motion : 

 H. R. Hasse. — The Convergence of .Series of Orthogonal Functions ; 

 E. W. Hobson.— The Determination of the Nature of a Function from a 

 Knowledge of One of its Derivatives : W. H. Young.— Mersenne's Primes : 

 I. McDonnell. 



Institution of Ei.ectricai, Engineers, at 8.— A Single Phase Motor 

 with Pole Changing Windings : J. S. Nicholson and B. P. Haigh. 



RovAL Society of Arts, at 4.30.— Delhi, the Metropolis of India: Sir 

 Bradford Leslie, K.C I.E. 



Concrete Institute, at 7.J0.— The Action of Acids, Oils and Fats upon 



Concrete : W. Lawrence Gadd. 



FRIDAY, De 



Royal Astronomical Socif 

 Cassiopeia (Ch. 8324) in igi 

 Magnitude of Nova Gcmin. 

 Edinburgh : H. Jameson.— ^ 

 Distribution in Latitude of ih 

 grams : T. Royd; 



5. — The Long Period VariaLle V 

 ^r2 : A. N. Brown.— Observations of the 

 ■um 2, made at the Royal Observatory, 

 lie on R Cygni: Heber D. Curtis.— The 

 Absorption Markings in Ha Spectrohelio- 

 Observations of Variable Stars. Edited 



Blagg and H. H. Turner. No. t: R. hxXm^ ~Pro!,rU,lt 

 Note on the Cambridge Magnitude Equation : F. A. Bellamy. 



" - - M (and 



H. H. 



by M, 



Pa/:ers 



—Note on a New Similarity between the Variations of S Pi 



other Long Period Variables) and the Variations of Sun-spots ; 



Turner. -Obs-rv.ations of the Principal and other Series of Line 



Spectrum of Hydrogen : A. Fowler. 



MONDA K, DECEMIiER 16. 



Royal GEOGliAPiiicAL Society, at 8.30.— From the Victoria Ny 

 the Kisii Highlands : Dr. Felix Osw.-ild. 



AN SOCII 



-New Logic and Old : Miss E. E. Consi 



NO. 2250, VOL. 90] 



Royal Societ 

 Darling. 



OF Arts, at 8. — Methods of Economising Heat : C. R. 



_ _ _ TCARIES, at 5. — Some Observations on Currency and 



Credit and their Influence on Trade and Exchange : W. T. May. 

 TUESDAY, December 17. 

 Royal Statistical Society, at 5.- Presidential Address, The Use of 

 the Mathematical Theory of Probabilities in Statistics Relating to 

 Society : Prof. F. Y. Edgeworth. 



The 



nd Distnbu 



H. A. Humphrey. 



r-gas 



WEDNESDAY, December i3. 



Royal Meteorological Society, at 7.30.— Probable Utility of Salinity 

 Observations in the Irish Sea for Long-date Weather-forecasting: Prof. 

 H. Bassett.— Air Currents at a Height of 50 miles : J. E. Clark.— New- 

 Form of Standard Barometer : C. Anthony. 



Geological Society, at S.— The Discovery of a Human Skull and 

 Mandible in a Flint-bearing Gravel at Piltdown, Fletching (Sussex): 

 C. Dawson and Dr. A. Smith Woodward. 



Royal Society of Arts, at 8. — The Pictorial Possibilities of Work : 

 Joseph Pennetl. 



. Microscopical Society, at 8. — Insect Intelligence: F. Enoch. 

 I Astronomical Association, at 5. 



THURSDAY, December iq. 



LiNNEAN Society, at 8.— ExperimenLs on the Pollination of our Hardy 

 Fruits: C. Hooper.— The Morphology and Histology of Piper Betle. 

 Linn : H. M. Chibber.— Some New British Plants : G. Claridge Druce.— 

 Wild Rice, .'\nnual and Perennial : Dr. Otto Stape. 



Institution of Electrical I^ngineers. at 8.— The Work of the Inter- 

 national Electro-techniCdl Commission : Dr. S. P. Thompson. 



Institution of Mining and Metallurgy, at 8. 

 FRIDAY, December 20. 



Institution of Mechanical Engineers, at I.— Further Discussion : 

 Vapour-Compression Refrigerating Machines: J. Wemyss Anderson.— 

 A Contribution to the Theory of Refrigerating Machines ; J. H. Grindley. 



CONTENTS. P 



Vegetation Studies in the New World 



Signs and Symbols, Egyptology, and Freemasonry. 



By Rev. John Griffith 



Pedagogics, By J. A, G. . . 



Our Bookshelf .... ... 



Letters to the Editor: — 



The Rise of Temperature Associated with the Melting 

 of Icebergs. {li'M Diagrams.)— Prof. H. T. 



Barnes, F.R.S 



The Bending of Long Electric Waves Round the 



Globe.— Dr. W. H. Eccles 



The .Specular Reflection of X-rays.— W. L. Bragg 

 The Investigation of Flint.— George Abbott . . 

 Remarkable Formation of Ice on a .Small I'ond. 

 {J!'if/i D/,7^rniii.)—A. S. E. Ackermann .... 

 Anthropology at the British Association. — Robert 



Mend 



Atmospheric Electricity. By Dr. George C. Simpson 

 Prof. Friedmann's Treatment of Tuberculosis . . . 

 Sir George Howard Darwin, K.C.B., F.R.S. By 



J- L 



Mr. S. A. Saunder . . 



Notes 



Our Astronomical Column : — 



The Annular Solar Eclipse of April 17 



A Remarkable Shower of Meteoric Stones 



The (Trbit of Coinet 1910a 



The Gazt-lte Astronomiipie 



The New Pharmacological Laboratory at U nivcistty 



College, London, (/i/tis/rated.) 



Mathematics and Physics at the British Associa- 

 tion 



University and Educational Intelligence 



Societies and Academies 



Books Received 



Diary of Societies 



406 

 407 

 407 



40S 



410 

 410 



411 



411 

 411 

 412 



413 

 415 

 416 



420 

 420 

 420 

 420 



420 



421 

 426 

 427 

 429 

 43a 



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 Editorial Communications to the Editor. 



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