264 



NATURE 



[October 20, 192 1 



The Psychology of Thought and PreUng : A Con- 

 servative Interpretation of Results in Modern Psycho- 

 logy. By Dr. C. Piatt. Pp. x+290. (London : 

 Kegan Paul and Co., Ltd.) 75. 6d. net. 



A History of British Mammals. By G. E. H. 

 Barrett-Hamilton and M. A. C. Hinton. Part 21. 

 Pp. 697-748+ plates. (London : Gurnc}' and Jack- 

 son.) 35. 6rf. net. 



Cane Sugar : A Text-book on the Agriculture of 

 the Sugar Cane, the Manufacture of Cane Sugar, 

 and the Analysis of Sugar-House Products. By Noel 

 Deerr. Second (revised and enlarged) edition. Pp. 

 viii+644+29 plates. (London : Norman Rodger.) 

 42s. net. 



Diary of Societies. 



THURSDAY, October 20. 

 RoTAl AEHOKArTiCAL SOCIETY (at Rojal Society of Arts), at 5.30.— 



G. Brewer : The Langley Machine and the Hammondsport Trials. 

 Chemical Society, at 8.— R. L. Grant and F. L. Pyman : Nitro- and 



Amino-derivatives of 4-Phcnylg'lTO.xaline. 

 iNSTiTttTioy OF Automobile Engineers (at Commercial Vehicle and 



Motor Car ajid Marine Exhibitions, Olympia). — T. Clarkson : 



Coke as a Fuel for Commercial Tehicles. — W. D. Williamson: 



Leading Devices for Commercial Tehicles. 



FRIDAY, October 21. 



KoTAL SociETr OF MEDICINE (Otology Section), at 5.— Presidential 

 Address by Br. Logan Turner : The Structural Type of the 

 Mastoid Process based upon the Skiagraphic Examination of 

 1000 Crania of Various Races of Mankind.— Dr. AVatson-Williams 

 and E. Watson-Williams : A Method of Diagnostic Exploration of 



the Posterior Ethmoidal Cells. (Electro-Therapeutics Section), 



at 8.30.— Presidential Address by Dr. E. P. Cumberbatch : Pro- 

 gress in Elcctrology and Radiology : The Importance of Physics, 

 Physiology, and Anatomy. 



Phtsical Society of Londo'n (at Imperial College of Science, South 

 Kensington), at 5.— S. Butterworth : (1) On the Use of Anderson's 

 Bridge for the Measurement of the Variations with Frequency 

 of the Capacity and Effective Resistance of a Condenser. (2) The 

 Elimination of Earth Capacity Effects in Alternating Current 

 Bridges.— P. G. H. Tjewis : An Automatic Voltage Regulator.— 

 Prof. A. S. Hommy The Flow of Viscous Liquids through Slightly 

 Conical Tubes. 



Institution of IMechanical Engineers, at 6.— Dr. W". Ros;enh&in, 

 S. L. Archbutt, and Dr. D. Hanson : Eleventh Report to the 

 Alloys Research Committee on Some Alloys of Aluminium. 



MONDAY, October 24. 

 Institution of Mechanical Engineers (Graduates' Meeting), at 7. — 



R. E. Light : The Efficient Utilisation of Steam and Electric 



Power in Factories. 

 RoTAL Society of Medicine (Odontology Section), at 8.— Presidential 



Address by Mr. M. Hopson.— J. B. Parfitt : The Treatment 



of Pulpless Teeth. 

 Medical Society of London, at 8.30.— Sir Archibald Garrod, and 



Others : Discussion on the. Modern Treatment of Diabetes. 



TUESDAY, October 25. 

 Royal Society of Medicine (Medicine Section), at 5.30.— Dr. W. W. 



Payne and Dr. E. F. Poulton : Epigastric Pain. 

 Royal Anthropological Institute, at 8.15. — T. F. Mcllwraith : The 



Influence of Egypt on African Death Ceremonies. 

 Sociological Society, at 8.15.— R. Unwin : Preparations for the 



General Adoption of Town Planning. 



WEDNESDAY, October 26. 

 :St. Mary's Hospital Medical Society, at 8. — Dr. C. Singer : 

 Leonardo Da Vinci as a Man of Science and Anatomist. 



THURSDAY, October 27. 



Institution of Mining and ^Metallurgy (at Geological Society's 

 Rooms), at 5.30. — L. Hill: Ventilation and Human Efficiency. — 

 J. N. Justice : Notes on the Ore Deposits of Eagle Mountain, 

 Demerara. 



Child-Study Society (at Birkbeck College), at 6. — Discussion on 

 Individual Training in the School. — Miss Bassett : The Dalton 

 Plan. — Miss Mackinder : Individual Work. — Mrs. Bottrill : Ver- 

 tical Classification. 



Egypt Exploration Society (at Royal Society Rooms), at 8.30. — 

 P. E. Newberry : Early Relations of Egypt, Babylonia, and 

 Syria. 



HoYAL Society of Medicine (Urology Section), at 8.30. — Presidential 

 Address by Sir Thomas Horder : The Medical Aspect of Some 

 Urinary Diseases. 



FRIDAY, October 28. 



Thysical Society of London (at Imperial College of Science), 

 at 5. 



Institution of Mechanical Engineers, at 6.— Continuation of Dis- 

 cussion on the Eleventh Report of the Alloys Research Com- 

 mittee on Some .\lloys of Aluminium. 



3loYAL Society of Medicine (Epidemiology and State Medicine Sec- 

 tion), at 8.— Presentation of Jenner Medal to Sir Shirlev Srurphy 

 by the President.— Dr. L. G. Haydon : Plague in Wild Rodents 

 in South Africa. 



PUBLIC LECTURES. 



(.1 number in brackets iudicates the iinmber of a leetuTf 

 in a course.) 



THURSDAY, October 20. 

 University College, at 4. — Dr. T. G. Pinches: Babylonian 

 Magic (3). 



FRIDAY, October 21. 

 University College, at 4.30.— Dr. J. C. Drummond : Nutrition (2). 



MONDAY, October 24. 



BiHKBKCK College, at 5.30.— L. Bolton: Relativity (1). 



King's College, at 5.30.— Dr. W. R. Ormandy : Liquid Fuel 

 Engines (1). 



TUESDAY, October 25. 



King's College, at 5.30.— Prof. H. Wildon Carr : The Modem 

 Scientific Revolution and its Meaning for Philosophy (3).— Th« 

 Statistical Character of the Laws of Nature.— Dr. W. Brown : 

 Psychology and Psychotherapy (2).— L. J. Hunt: Cascade Syn- 

 chronous Slotors and Generators (2). 



WEDNESDAY, October 26. 



School of Oriental Stcdies, at 12.— Miss A. Werner: Bantu Tribes 

 of East Africa (2). At 5.— Rev. W. Hopkyn Recs : Chinese Folk 

 Lore. , . ,, 



King's College, at 4.30.— Dr. C. A. Da Fano : Histology of the 

 Nervous System (3).— At 5.15.— Prof. W. T. Gordon: Geological 

 and Geographical Physical Basis of the British Empire. 

 THURSDAY, October 27. 



King's College, at 5.30.— H. W. Fitz-Simons : Bridge Construc- 

 tion (2). 



t 



PAGE 



CONTENTS. 



London University Site • 233 



Travel in North-west China. By J. W. G. ... 234 



Natural History of Pheasants. By W. E. C. . . 235 

 Butschli's Lectures on Comparative Anatomy. 



By Prof. G. Elliot Smith, F.R.S 236 



Earth-structure. By Prof. Grenville A. J. Cole, 



236 



F.R.S 



Our Bookshelf 



Letters to the Editor:— , , . , -mr 



The Development of Optical Industries. — J. W. 

 Atha and Co. ; The Writer of the Article . . 



The Tendency of Elongated Bodies to set in the 

 North and South Direction.— Sir Arthur Schus- 

 ter, F.R S ^- • • . \ o* / 



Is Scientific Inquiry a Criminal Occupation?— Frot. 

 Henry E. Armstrong, F.R.S. . . • • • 



Radiation and Chemical Action —Prof. W. C. 



McC. Lewis • • 



Habits oftheHed-ebog.-Miller Christy 



The Flic'ht of Thistledown.— Miles Walker . 



A Method of Improving Visibility of Distant 



Objects.— Prof. C. V. Raman ...... 



Gold-coloured Teeth of Sheep. -Thos Steel . . 



The Constitution of Molecules.— Prof. J. K. Far- 



By Dr. 



tington . . • ••.-.• • _ • ■ .• • 

 The Laboratory of the Living Organism. 



M O. Forster, F.R.S r^ r W 



Metaphysics and Materiahsm. By Prof. H. 



Wildon Carr J. Z^" , 



Damascene Steel and Modern Tool Steel . . . . 



Obituary^— ^^ Hann. By Sir Napier Shaw, F.R.S. 



Benjamin Harrison • 



Notes ••••••• 



Our Astronomical Column : — 



The Lunar Eclipse of October 16 



Reform of the Calendar 



The Spectrum of <p Cassiopeia 



Minor Planets . . . " ,; ' ,' • \,' ,' ' ' ' 



The Ceniemry of Astronomische Nachnchten . . . 



Geology of the South Wales Coalfield . . ... • 

 National Institute of Agricultural Botany, {//ius- 



Chem'Sal Reactivity 'and' the" Quantum Theory. 



By Dr. Eric K. Rideal 



The Teaching of Geography . . ....... 



Centenary of McGill University, Montreal . . . . 



Canadian Insect Pests . . • 



University and Educational InteUigence . . 



Calendar of Scientific Pioneers 



Societies and Academies 



Books Received 



Diary of Societies 



237 



238 



240 

 241 



241 

 242 

 242 



242 

 242 



242 

 243 



247 

 248 



249 

 251 

 251 



256 

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258 



259 

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NO. 2712, VOL. 108] 



