420 



NATURE 



[January 24, 19 18 



quakes.— M. Hamy : A particular case of diffraction of 

 the images of circular stars. — E. Arlds : The necessity 

 of improving the Clausius equation of state. In the 

 Clausius equation 



.^ RT _ (^(T) 



it is proposed to replace the two constants a and /8 

 by two functions of the temperature, and it is shown 

 that the main advantages of the original equation are 

 not lost. — A. Blondel : The direct measurement of the 

 angle of internal decalage of an alternator. — G. Jnlia : 

 Rational substitutions.— M. Akimoff : Fourier-Bessel 

 transcendentals with several variables. — M. Mesnager,: 

 The rigorous demonstration of the formulae of rect- 

 angular beams and olates. — A. Leaute : Complement 

 to M. Blondel's theory on the induction reaction of 

 alternators. — F. Delhaye and M. Sluys : The erosion 

 valley of the Congo and its tectonic antecedents. — P. 

 Brodin and F. Saint-Girons : Researches on the leuco- 

 cytes of blood from tuber-culous subjects. For data 

 to be of value, the leucocytes must be taken daily for 

 a considerable period. The higher the proportion of 

 polynuclear leucocytes, and the higher the total num- 

 ber present, the graver the prognosis. — MM. Nicolle, 

 Fayet, and Truche : The treatment of epizootic lymph- 

 angitis by means of autolysed yeast juice. An account 

 of the technique proposed and the results obtained. — 

 F. Dienert : What are activated muds? The muds caus- 

 ing rapid nitrification of sewage contain chalk (50 per 

 cent.) and albuminoids (20 per cent.), the remain- 

 ing 30 per cent, being non-albuminoid. — J. Belot and 

 H. Fraudet : The localisation of foreign bodies in the 

 eyeball and the muscles of the eye. — A. Cabanes : Anti- 

 septic treatment by chloroform. A stream of oxygen 

 containing alcohol and chloroform vapour is circulated 

 through the wound. Purulent secretions diminish 

 rapidly under this treatment, and leucocytic reactions 

 are increased. — J. Bridre : Leucocytotherapy or aseptic 

 pyotherapy. Its use in lymphangitis of the horse. 



BOOKS RECEIVED. 



The Advanced Montessori Method. By M. Mon- 

 tessori. i.. Spontaneous Activity in Education. Trans- 

 lated by F. Simmonds and L. Hutchinson. Pp. vii + 357. 

 (London : W. Heinemann.) 65. net. 



Annuaire Astronomique et Met^orologique pour 

 1918. By C. Flammarion. Pp. 364. (Paris: C. 

 Flammarion.) 3 francs. . 



The Wellcome Photographic Exposure Record and 

 Diary, 1918. Northern Hemisphere and Tropics. Pp. 

 256. (London : Burroughs Wellcome and Co.) 



Resistance of Air. By Lt.-Col. R. de Villamil. Pp. 

 X+192. (London: E. and F. N. Spon, Ltd.) 75. 6d. 

 net. 



Short Logarithmic and other Tables. By Dr. W. C. 

 L'nwin. Sixth edition. Pp. 43. (London : E. and 

 F. N. Spon, Ltd.) js. 6d. net. 



The Practice of Pharmacy. Sixth edition. By Dr. 

 J. P. Remington, assisted by E. F. Cook. Pp. xxviii + 

 25-1987- (London : J. B. Lippincott Co.) 355. net. 



The Gate of Remembrance : The Story of the 

 Psychological Experiment which Resulted in the Dis- 

 covery of the Edgar Chapel at Glastonbury. ByF. B. 

 Bond. Pp. x+176. (Oxford: B. H. Blackwell.) 65. 

 net 



Educational Reform. By the Rt. Hon. H. A. L. 

 Fisher. Pp. 15. (London : Longmans and Co.) 2d. 

 net. 



Troubles Locomoteurs Consecutifs aux Plaies de 

 Guerre. By Prof. A. Broca. Pp. 155. (Paris : Mas- 

 son et Cie.) 4 francs. 



NO. 2517, VOL. 100] 



DIARY OF SOCIETIES. 



THURSDAY, January 24, 

 RoYAi. Society, at 4.30.— Graphical Solution fir High-angle Fire: 1 

 A. N. Whitehead.— Flocculation : Spencer Piclcerlng.— Revolving 1 

 in the Atmosphere: Dr. J. Aitken. —Ultra-violet Transparency o: 

 Lower Atmosphere .ind fits Relative Poverty in Ozone : Hon. 1 

 Strutt. — The Presence] in the Solar Spectrum of the Water-v.ipour 1 

 A 3064 : Prof. A. Fowler. — The Ultra-violet Band of Arimonia anc 

 Occurrence in the Solar .Spectrum : Prof. K. Fowler and C. C. L. Gn^ 

 Institution ok Electrical Engineers, at 6. — Telephone Exc' , 

 Transfers and their Organisation : F. G. C. Baldwin. 

 FRIDA V, January 23. 

 Royal In.stitution, at 5.30. — Tbe Motion of Electrons in Gases: 



J. S. Townsend. 

 Physical Society, at 5.— Presidential Address: Prof. C. V. Boys, F. I'.-. 



SATl/RDAV, Janvarv 26. 

 Royal Institution, at 3.— The Chemical Action of Light: Prof. W . 1. 

 Pope. 



MONDA y, January 28. 

 Royal Geographical Society, at 8.30.— East Africa: General Smut<. 

 Royal Society of Arts, at 4.30. — High-temperature Processes and I'lo- 

 ducts : C. R. Darling. 



TUESDAY, January 29. 

 Royal Institution, at 3. — Palestine and Mesopotamia : Prof. Flinders 

 Petrie. 



WEDNESDAY, January 30. 

 Royal Society of Arts, .it 4.30. — The Manufacture of Margarine in 

 Great Britain : Sir William G. Watson, Bart. 



THURSDAY, January 31. 

 Royal Society, at 4.30. — Probable Papers: The Growth of Trees: A. 

 Mallock. — Action of Light Rays on Organic Compounds, and the Photo- 

 synthesis of Organic from Inorganic Compounds in Presence of Inorganic 

 Colloids: Prof. B. Moore and T. A. Webster.— The Isolation and 

 Serological Differentiation of Bacillus tctani: Capt. W. J. Tulloch.— An 

 Investigation into the Periodicity of Measles Epidemics in the Different 

 Districts of London for the years 1890-1912 : Dr. J. Brownlee. 

 Royal Institution, at 3. — Revolving Fluid and the Weather Map: Sir 

 Napier Shaw. ^> 



FRIDAY, February i. 

 Royal Institution, at 5,30. — Gravitation and the Principle of Relativity : 

 Prof. A. S. Eddington. 



SATURDAY, February 2. 

 RovAL Institution, at 3. — The Ethics of the War : P. H. Loyson. 



CONTENTS. P.AGE 



The Elements of Refrigeration. By Prof. J. 



Wemyss Anderson . 401 



New Guinea as a Centre for Plant Distribution. 



By A. W. H. 402 



Histology of Vegetable Drugs 402 



Our Bookshelf 403 



Letters to the Editor: — 



Ice Thistles.— J. H. Coste . 404 



Science in Industrial Reconstruction 404 



The Fertiliser Situation in the United States. By 



Dr. E. J. Russell, F.R.S 406 



What Determines Stature ? ■ 407 



Notes 408 



Our Astronomical Column :— 



Encke'? Comet . 412 



Solar Observations at Madrid 412 



Spectra of Jupiter and Saturn 412 



The Setting of Cements. By C. H. D. ... ^13 

 Secondary-School Examinations and Advanced 



Courses .- .... 413 



1 German Economics and Technology 414 



I The New Integral Calculus. By G. B. M 414 



1 Meteorology in the Argentine Republic 415 



i The Needs of Our Education at the Present Day, 

 with Special Reference to Science Teaching. By 



I Sir H. H.Johnston. G. CM. G, K.C.B 4>S 



The Meteorological Resources of the Empire. By 



Major H. G. Lyons, F.R.S 416 



University and Educational Intelligence 417 



Societies and Academies 4'9 



Books Received . 420 



Diary of Societies 420 



ST. 



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 MACMILLAN AND CO., Ltd., 

 MARTIN'S STREET, LONDON, W.C.2. 



Advertisements and business letters to be addressed to the 

 Publishers. 



Editorial Communications to the Editor. 

 Telegraphic Address : PHUSis, London. 

 Telephone Number : Gerrard 8830. 



