68 



NATURE 



[September 9, 1920 



siderable modifications of tabulations previously pub- 

 lished. — G. H. Hardy : The male genitalia of some 

 robber-flies belonging to the sub-family Asilina; 

 (Diptera). The results of a study of a number of 

 species of Australian robber-flies belonging to the sub- 

 genus Asilus indicate that the male genitalia afford 

 a satisfactory basis for identifying the species. Eleven 

 species (of which one is described as new) are dealt 

 with and their male genitalia figured. 



Books Received. 



A Kinetic Theorv of Gases and Liquids. By Prof. 

 R. D. Kleeman. Pp. xvi+272. (New York : J. Wiley 

 and Sons, Inc. ; London : Chapman and Hall, Ltd.) 

 16^. 6d. net. 



Electric Furnaces in the Iron and Steel Industry. 

 By W. Rodenhauser, J. Schoenawa, and C. H. Von 

 Baur. Translated and completely rewritten. Third 

 edition, revised. Pp. xxi + 460. (New York : J. Wiley 

 and Sons, Inc. ; London : Chapman and Hall, Ltd.) 

 24s. net. 



Elementary Applied Mathematics : A Practical 

 Course for " General Students. By Prof. W. P. 

 Webber. Pp. ix+115. (New York: J. Wiley and 

 Sons, Inc. ; London : Chapman and Hall, Ltd.) 

 "]$. 6d. net. 



Elementary Algebra. By C. V. Durcll and G. W. 

 Palmer. Part i. With Answers. Pp. xxxi + 256+ 

 xlvi. (London : G. Bell and Sons, Ltd.) 45. 6d. 



Vaccination in the Tropics. By Col. W. G. King. 

 Pp. 64. (London : Tropical Diseases Bureau.) 55. 

 net. 



Das Schmerzproblem. By Prof. A. Goldscheider. 

 Pp. iv-l-91. (Berlin : J. Springer.) 10 marks. 



Elementary Practical Biochemistry. By Prof. 

 W. A. Osborne. Pp. v-t-184. (Melbourne: W. 

 Ramsay.) 



Stones and Quarries. By J. A. Howe. Pp. x+137. 

 (London : Sir I. Pitman and Sons, Ltd.) 35. net. 



Modern Explosives. By S. I. Levy. Pp. ix+ 109. 

 (London : Sir I. Pitman and Sons, Ltd.) 3,';. net. 



Life in a Sussex Windmill. By E. A. Martin. 

 Pp. V+118. (London: Allen and Donaldson, Ltd.) 

 6s. net. 



The Elements of Practical Psycho-Analysis. By 

 P. Bousfield. Pp. xii-l-276. (London : Kegan Paul 

 and Co., Ltd.) los. 6d. net. 



Catalysis and its Industrial Applications. By E. 

 Jobling. Second edition. Pp. viii+ 144. (London : 

 J. and A. Churchill.) 7.?. 6i. net. 



The Outline of History. By H. G. Wells. 

 Revised and corrected edition. Pp. xx+652. 

 (London: Cassell and Co., Ltd.) 21s. net. 



The Victoria History of the Counties of England. 

 A History of the County of Bedford. Part i.. Geo- 

 logy, by J. Hopkinson and J. Saunders; Palseonto- 

 logv, by R. Lydekker, pp. 35, 3^. 6d. net. Parts iv. 

 and vi.. Early Man, by W. G. Smith; Anglo-Saxon 

 Remains, by R. A. Smith, pp. 145-90, 5s. net. 

 (London : Constable and Co., Ltd.) 



Human Psychology. By Prof. H. C. Warren. 

 Pp. xx+460. (London : Constable and Co., Ltd.) 

 12s. net. 



George Stephenson. By Ruth Maxwell. Pp. 192. 

 {London : G. G. Harrap and Co., Ltd.) 3s. 6d. net. 

 Memoirs of the Geological Survey, Scotland. The 

 Mesozoic Rocks of Applecross, Raasay, and North- 

 East Skve. By Dr. G. W. Lee. Pp. vii + 93 + plates. 

 (Southampton : Ordnance Survev Office ; Edinburgh : 

 H.M. Stationery Office.) 6^. net. 



NO. 2654, VOL. 106] 



Report on Compulsory Adoption of the Metric 

 System in the United Kingdom. Pp. 70. (London : 

 Conjoint Board of Scientific Societies.) is. 



American Civil Engineers' Handbook. Edited bv 

 M. Merriman. Fourth edition, revised and enlarged. 

 Pp. 1955. (New York : J. Wiley and Sons, Inc. ; 

 London : Chapman and Hall, Ltd.) 33X. net. 



Topographic Maps and Sketch Mapping. By Prof. 

 J. K. Finch. Pp. xi-(-i75. (New York: J. Wiley and 

 Sons, Inc. ; London : Chapman and Hall, Ltd.) 

 13X. 6d. net. 



The Control of Parenthood. By Prof. J. A. Thom- 

 son and others. Pp. xi + 203. (London and New 

 York : G. P. Putnam's Sons.) 7s. 6d. net. 



An Introduction to Combinatory .Analysis. By 

 Major P. A. MacMahon. Pp. viii+71. (Cambridge: 

 At the University Press.) 7s. 6d. net. 



The Influence of Man on .Animal Life in Scotland : 

 A Study in Faunal Evolution. By Dr. J. Ritchie. 

 Pp. xvi+550. (Cambridge : .\t the University Press.) 

 zSs. net. 



Exercises from Elementary Algebra. By C. Godfrey 

 and A. W. Siddons. Vols. i. and ii. complete. With 

 -Ainswers. Pp. x+395. (Cambridge : .\t the Univer- 

 sity Press.) 7^. 6d. net. 



Small Holding and Irrigation : The New Form of 

 Settlement in Palestine. By Dr. S. E. Soskin. 

 Pp. 63. (London : G. .Mien and Unwin, Ltd.) 2S. 

 net. 



CONTENTS. p.AGE 



Science and Labour 37 



Development of Higher Education in India .... 39 



The Foundations of Aircraft Design 40 



Food Poisoning 41 



Malaria at Home and Abroad 42 



The Oil Industry. By Harry Ingle 43 



Science in History. By C 44 



Our Bookshelf 45 



Letters to the Editor: — 



Relativity.— A. Mallock, F.R.S ■ 46 



Toads and Red-hot Charcoal.— Prof. W. N. F. 



Woodland 46 



Active Hydrogen.— Y. Venkataramaiah 46 



The Organisation of University Education. — Frank H. 



Perrycoste 47 



Portraits of Myriapodologists — B. B. Woodward . . 48 

 Age and Growth Determination in Fishes. {Illus- 

 trated.) By Rosa M. Lee 49 



The Structure of the Atom. I. By C. G. Darwin . 51 

 Obituary : — 



Canon C. H. W. Johns.- H. R. Hall 54 



Notes 55 



Our Astronomical Column : — 



The New Star in Cygnus 59 



Radiation Pressure near the Sun 59 



Distribution of Intensity in Solar and Stellar Spectra . 59 

 Scientific Studies of Non-ferrous Alloys. By C. T. 



Heycock, M.A., F.R.S 60 



Economic and Educational Aspects of Zoology. By 



Prof, J. Stanley Gardiner. M. A., F.R.S 63 



Native Races of the Empire 65 



Relativity 65 



University and Educational Intelligence 66 



Societies and Academies 67 



Books Received 68 



