2^0 



NATURE 



May 22, 19 19 



number of aqueous solutions and binary mixtures, ! 



such as salol mixed with betol, confirmed the con- i 



elusion that a supersaturated solution passes at a I 



definite temperature into a condition (the labile state) j 



in which spontaneous crystallisation can be induced j 



by mechanical means, whereas above this temperature , 



(the metastable state) crystals only grow by inocula- j 



tion of the solution with crystalline germs. 1 



BOOKS RECEIVED. 



Cultural Reality. By Dr. F. Znaniecki. Pp. xv+ 

 359. (Chicago : University of Chicago : Press.) 

 2.50 dollars net. 



Le Fran^ais Enseign^ par la M^thode Intuitive et 

 Directe. By Prof. P. Dessagnes. Pp. viii+304. 

 (Paris: Masson et Cie.) 5 francs net. 



A Manual of Machine Design. By F. Castle. Pp. 

 ix + 351. (London: Macmillan and Co., Ltd.) ys. 6d. 

 The Principles Underlying Radio-Communication. 

 (Radio Pamphlet No. 40, December 10, 191S, Signal 

 Corps, U.S. Army.) Pp. 355. (Washington : (iovern- 

 ment Printing Office.) 



Aquatic Microscopy for Beginners, or Common 

 Objects from the Ponds and Ditches. Bv Dr. A. C. 

 Stokes. Fourth edition. Pp. ix+324. (New York: 

 J. Wiley and Sons, Inc.; London: Chapman and 

 Hall, Ltd.) los. 6d. net. 



Fats and Fattv Degeneration. By Prof. M. H. 

 Fischer and Dr. M. O. Hooker. Pp.'ix+is.c (New 

 York : J. Wiley and Sons, Inc. ; London : Chapman 

 and Hall, Ltd.) 9s. 6d. net. 



Shore Processes and Shoreline Development. By 

 Prof. D. W. Johnson. Pp. xvii + 584. (New York: 

 J. Wilev and Sons, Inc.; London: Chapman and 

 Hall, Ltd.) 23s. net. 



Macmillan's Geographical Exercise Books. Africa. 

 With questions by B. C. WalHs. Pp. 48. (London : 

 Macmillan and Co., Ltd.) is. 6d. 



Songs from a Watch-Tower. Bv R. H. McCartney. 

 Pp. 151. (Chicago and New York: Fleming H. 

 Revell Co.) 



Fresh Hope and Health for Hospital Patients and 

 Invalids. By C. Muller. Second edition. Pp. 63. 

 (London : G. Bell and Sons, Ltd.) 2i-. net. 



Biochemical Catalysts in Life and Industry. Proteo- 

 lytic Enzymes. Bv Prof. J. Effront. Translated bv 

 Prof. S. C. Prescott, assisted by C. S. Venable. Pp. 

 xi-l-752. (London : G. Bell and Sons, Ltd.) 235. net. 



Fresh-water Biology. By Prof. H. B. Ward and 

 G. C. Whipple and others. Pp. ix+iiii. (London: 

 G. Bell and Sons, Ltd.) 285. net. 



British Museum (Natural Historv). Studies on 

 Acari. No. i. The Genus Demodex, Owen. Bv 

 S. Hirst. Pp. 44+xiii plates. (London : British 

 Museum (Natural History); Longmans and Co., and 

 others.) los. 



A Course in Machine Drawing and Sketching. By 

 T. H. Dale. Pp. vi -I- 186. (London and Edinburgh: 

 W. and R. Chambers, Ltd.) 35. 6d. net. 



DIARY OF SOCIETIES. 



THURSDAY, May 22. 



Royal Institution, at 3. — Prof. F. Keeble : Intensive Cultivation. 



Royal Society, at 4.30. — Prof. W. J. SoUas : The Structure of Lysorophus 

 as Exposed by Serial Sections. — O. Rosenhein : A Prrliminarv Study 

 of the Energy Expenditure and Food Requirements of Women Workers. 

 — M. Greenwood, C. Hodson, and A. E. Tebb : Report on the Metabolism 

 of Female Munition Workers. 



Institution of Electrical Engineers, at 6. — Dr. S. Chapman : Electrical 

 Phenomena occurring in High Atmospheric Levels. 

 FRIDAY, May 23. 



Physical Society, at 5. — Lewis F. Richardson : A Form of Knudsen's 

 Vacuum Manometer. — Gilbert D. West : Theories of Thermal Transpira- 

 tion. — Prof. W. H. Eccles : Demonstration of a Tuning-fork sustained by 

 Thermionic Tubes. 



NO. 2586, VOL. 103] 



SATURDAY, May at- 



LiNNEAN Society, at 3. — Anniversary Meeting. 

 MONO A Y, May 26. 



Royal Society of Arts, at 4.30.— Capt. F. E. D. Acland : A New Prime 

 Mover of High Efficiency and British Origin. 



Royal Geographical Society, at 8.30. — Capt. A. de C. Sowerby : Recent 

 Journeys in Manchuria. 



TUESDAY, May 27. 



Ro7AL Institution, at 3. — Prof. W. H. Bragg : Listening under Water. 



Royal Societv of Arts, at 4.30. — Lt. -Col. the Hon. Sir John McCall : 

 Science and Industry in Australia. 



Zoological Society, at 5.30.— J. T. Cunningham: Result of a Mendeliati 

 Experiment on Fowls, including the Production of a Pile Breed. — Miss 

 Kathleen F. Lander : Some Points in the Anatomy of the Takin (b'ui/arcas 

 taxicolor nvhitci). — E. P. AUis : Certain Features of the Otic Region of 

 the Chondrocranium of Lepidosteus, and Comparison with other Fishes, 

 and higher Vertebrates. 



WEDNESDAY, May 28. 

 Royal Society of Arts, at 4.30.— H. J. Powell : Glass Making Before 



and During the War. 



THURSDAY, May 29. 

 Institution of Electrical Engineers, at 2.30. — Annual General 



Meeting. 

 Royal Institution, at 3.— Sir Valentine Chirol : The Balkans. 

 Royal Sociktv, at 4.30. — Croonian Lecture — Dr. H. H. Dale : The 



Biological Significance of Anaphylaxis. 

 Royal Aeronautical Society, at 8.— Squadron-Commander G. M. 



Dyott : Flying in South America. 



FRIDAY, May 30. 

 Royal Institution, at 5.30. — Sir John R. Bradford : A " Filter-passing 



Virus in Certain Diseases. 

 Institution of Mechanical Engineers, at 6. — Discussion resumed by 



Dr. W. Rosenhain on Paper by Dr. W. H. Hatfield : The Mechanical 



Properties of Steel, with some consideration of the Question of Brittlene-ss. 

 Illuminating Engineering Society, at 8. — F. W. Willcox : The Gas- 

 filled Lamp and its Effect on Illuminating Engineering. 

 SATURDAY, May 31. 

 British Psychological Society, at 3.30.— F.E. Bartlett and Miss E. M. 



Smith : Listening to Sounds of Minimal Intensity.— E. Bullough : The 



Relations of Esthetics to Psychology. 



CONTENTS. PAGE 



Applied Chemistry . 221 



A Geological Bibliography of India 223 



Research on Wounds of War. By Major L. J. Austin 223 



Our Bookshelf 224 



Letters to the Editor: — 



The Inheritance of Acquired Characleis. — Prof. 



E. W. MacBride, F.R.S. 225 



The Conditions attached to Government Grants for 

 Scientific Research.— Prof. Frederick Soddy, 



F.R.S. 226 



The Atlantic Flight 226 



The Development of Agricultural Research and 

 Education in Great Britain. By Dr. E. J. 



Russell, F.R.S 227 



The Financial Position of Cambridge University . 229 

 The Government of India and Scientific Medicine. 



ByJ. W. W. S 229 



Notes 230 



Our Astronomical Column :— 



Jupiter 234 



Nova Aquilse, 1918 . . . 234 



" Annuaire de I'Observatoire Royal de Belgique " . . 234 



Science and the Classics 234 



Electric Furnaces. By Chas. R. Darling 235 



British Optical Research. By A. E. C 236 



A New British Whale 237 



University and Educational Intelligence 237 



Societies and Academies 238 



Books Received ... 240 



Diary of Societies 24a 



Editorial and Publishing Offices: 



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Advertisements and business letters to be addressed to the 

 Publishers 



Editorial Communications to the Editor. 

 Telegraphic Address: Phusis, London. 

 Telephone Number : Gerrard 8830. 



