dB'' 



f^AfukE 



[March 4, 1920 



inual r 



ng in" I 



JAnTWSfts.— J. N. Mukherjee : Coagulation of Metal Sulphide Sols 

 irt 1 1. I nfluence of Temperature on the Rate of Coagulation of Arsenious 

 Iphide Hydrosois. 

 AL Society ok Medicine (Obstetrics and Gynaecology Section), at 8. 

 >+-G. Ley : Utero-Placfintal Apoplexy (Accidental Hicmorrhage). An 

 rAnalysis of Fifty Cases. 



I FRIDAY, March s. 



«bYAL Astronomical Society, at 5.— (A Geophysical Discussion.) 



J. de Graaf Hunter and Others : The Earth's Axes and Figure. 

 •CpfiCRETB Institute (at 296 Vauxhall Bridge Road), at 6.— E. S. 



Andrews: Some Properties of Steel. 

 Institution of Mechanical Engineers, at 6.— Adjourned Discussion 



on Recent Advances in Utilisation of Water Power E. M. Bergstrom. 

 •Institution OF Electrical Engineers (Students' Meeting) (at City and 



Guilds (Engineering) College), at 7.— Roger T. Smith : Presidential 



Address. 

 Technical Inspection Association (at the Royal Society of Arts), at 



7.30 —W. L. Baillie : Sampling— Some Proble ns and Fallacies. 

 Junior Institution of Enginerrs (at 39 Victoria S reei), at 7.30.— 



F. H.^Rolt : Notes on Gauge Testing and Measuring Appliances. 



■RoVAL Institution of Great Britain, at 9. — Hon. J. W. Fortescue: 

 Military History. 



SATURDAY, March 6. 



i?oVAL Institution of Great Britain, at 3.— Sir J. J. Thomson; 

 Positive Raysi 



MONDAY, March 8. 



Royal Institution of Great Britain, at 3.— Sir John Cadman : 

 Modern Development of the Miner's Safety Lamp. 



"Royal Geografhical Society (at Lowther Lodge), at 5. 



Biochemical Society (Annual General Meeting) (at Institute of Physio- 

 logy, University College), at 5.30.— S. S. Zilva : The Fat-Saluble 

 Accessory FactO'- in Cabbage and Carrots. — A. Harden and S. S. Zilva : 

 -The Antiscorbutic Requirements of the Monkey.— A. Harilen and S. S. 

 Zilva: Dietetic Experiments with Frogs. — O. Rosenheim and J. C. Drum' 

 mond : 'I he Association of Fat-Soluble A with Lipochrome Pigments. — 

 F. R. Henley: Bacierial Process for the Mpnufacture of Acetone. 



Surveyors' Institution (Junior Meeting), at 7. 



Aristotelian Society (at 74 Grosvenor Street), at 8.— M. Ginsberg : 

 as there a General Will ? 



Medical Society of London, at 8.30. — Dr. W. H. Willcox : Heat 

 .Hyperpyrexia : The Clinical Aspect.— Dr. L. E. Hill : The Physiological 

 ;Aspect. 



, TUESDAY, March 9. 



"RfevAL Horticultural Society, at 3. — J. Hudson : Fruits which can 

 -be Grown under Glass without Fire Heat. 



Roval Institution of Great Britain, at 3.— Prof. A. Keith : British 

 Ethnology— The Invaders of England. 



■Royal Coi lf.ge of Physicians, at 5.— Dr. J. L. Birley : The Principles 

 of Medical Science a^ applied 10 Military Aviation (Goulstonian Lecture). 



iNsriT^TiON OF Civil Engineers, at 5.30 —Maj. -Gen. Sir Gerard M. 

 Heath : Royal Engineer Work in the Great War. 



"British Psvchulogical Society (Education Section) (at London Day 

 Training College), at 6.— D. J. Collar : A Statistical Survey of Arith- 

 metical Ability. 



'Royal Photographic Society of Great Britain (Scientific .ind 

 Teclmical Group), at 7.— G. I. Higson : Photomicrography in Photo- 

 graphic Research.— K. Hickman: (i) A New Washing Device and Plate 

 Kocker ; (2) I>ark-roora Illumination by means of Lamps in Liquid Cells. 



'Qukkbtt Microscopical Club, at 7.30. 



U'^EDNESDAY, March 10. 



Royal Institution of Great Britain, at 3. — Sir John Cadman : 

 Petroleum and the War. 



HovAi. Society of Arts, at 4.30.— H. M. Thornton : Gas in Relation to 

 Industrial Production and National Economy. 



Ceoiogical Society of London, at 5.30. — Prof. A. H. Cox and A. K. 

 Wells : The Lower Palaeozoic Rocks of the Arthog-Dolgelley District. 

 THURSDAY, March ii. 



■Royal Institution of Great Britain, at 3.— Lt.-Col. E. Gold: 

 The Upper Air: (ii) Results and thrir Interpretation. 



Institutk of Metals (at Institution of Mechanical Engineers) (Annual 

 General Meeting), at 4.— Eng. Vice-Admiral Sir George Goodwin : 

 Inaugural Address. 



Royal Socieiy, at i,.j,o.— Probable Papers— ^ . G. Duffieid, T. H. 

 Burnham, and A. A. Davis: The Pressure upon the Poles of Metallic 

 Arcs, including Alloys and Composite Arcs.— J. H. Vincent : Further 

 Experiments on th- Variation of Wave-lensjth of the Oscillations Gen- 

 erated by an Ionic Valve Due to Changes in Filament Current. — H. A. 

 Daynes : (i) The Theory of the Katharometer ; (2) The Process of 

 Diffusion through a Rubber Membrane. 



HoYAL College of Physicians, at 5. — Dr. J. L. Birley : The Principles 

 of Medical Science as applied to Military Aviation (Goulstonian Lecture). 



RoYAi, Society OF Med'Cine (Occasional Lecture), at 5. — Sir Jagadis 

 Bose : Plant and Animal Response (with Demonstrations of Growth by 

 the Magnetic Crescograph>. 



Child-Sti^dy Societv (at Royal Sanitary Institute), at 6.— Miss M. Jane 

 Reaney : The Educational Needs of Adolescence. 



Institution of Electrical ENGiNEERs(at Institution of Civil Engineers), 

 at6.— W. H. Patchell: Operating a By-Product Producer-Gas Plant for 

 Power find Heating.— S. H. I'owles: Production of Power from Blast- 

 furnace Gfjs, 



Oil AND Colour Chemists' Association (at 2 Furnival Street), at 7.— 

 J. B. Shaw.: Various Points in the Manufacture of Lake and Pigment 

 Colours. 



Optical Society, at 7.30. 



Institution of Automobile Engineers (Graduate Section), at 8. — 

 C. A. CJiappell : Magnetos. 



iNSTiTtjtE Of Metals fat Institution of Mechanical Engineers) (Annual 

 GeiieralMeeting), at 8.— Dr. G. D. Bengough, R. M. Jones, and Huth 

 Pirret : Fifth Report ro the Corrosion Research Committee.— R. Seligman 

 and P. Wjlliajns ; The Action on Aluminium of Hard, Industrial Waters. 



RoYXi Society 6" Medicine' (Neurology Section), af 8.30. — Prof. 

 J. S. B. Stopford : Results of End-to-end Suture of Peripheral Nerves. 



"■ /•;?//?'/}K, March 12. 



Institute of Metals (at Institution of Mechanical Engineers) (Annual 

 General Meeting), at 10.30.— J. Neil Mac Lean : The Art of Casting in 

 High Tensil Brass.— H. Moore and S. Beckinsale :;The Rrmoval of 

 Internal Stress in 70: 30 Brass hv Low-temperature Annealing.— Dr. 

 W. Rosenhain, J. L. Haughton, and Kaithleen Bin 'ham Zinc Alloy- 

 with Aluminium and Copper. — Dr. W. Rosenhain: A Model for Represents 

 inc the Constitution of Ternary Alloys. — A. C. Vivian : Tin-Phosphorut, 

 Alloys.— W. C. Hothersall and E. L. Khead : Some Notes on the Effect 

 of Hydr gen on Copper. 



InStitijtb OF Metals (at JAstltutiort bf Mechanical Engineers) (Annual 

 General Meeting), at 2.30. —W. E. Alkins : The Effect of Progressiv* 

 Drawing upon some Physical Properties of Commercially Pure Copper, 



— F. Johnson : The Influen :e of Cold Rolling on the Physical Properties 

 of Copper.— J. L. Hauuhton : The Study of Thermal Electro-motive 

 Force as an Aid to the Investigation .of the Constitution of Alloy Systems. 



— H. H. Hayes: The Polishing and lEtching of Znc for Micro-examina- 

 tion.— W. E. Hughes: Idiomorphic Crystals of Electro-deposited Copper. 



Royal Astronomical Society, at 5. 



Physical Society of London, at 5.- F. W. Newman: Absorption of 

 Oases in the Electric Discharge Tube.— F. S. G. Thomas: A New 

 Directional Hot Wire Anemometer.- Dr. Hans Petters.son : Exhibit of a 

 New Micro balance. 



Malacological Society of London (at Linnean Society), at 6. 



Royal Institution of Great Britain, at 9: — W. W. Rouse Ball : 

 String Figures. 



SATURDAY. March 13. 



RovAL_ Institution of Great Britain, at 3. — Sir J. J. Thomson : 

 Positive Rays. 



CONTENTS. PAGE 



Knowledge and Understanding. By W. A. T. , . , i 



A Natural History of the Feelings 3 



Radiological Diagnosis of Disease 4 



The Manufacture of Aitificial Fertilisers. By Dr. 



E. J. Russell, F.R.S 4 



Our Bookshelf 5 



Letters to the Editor: — 



Organisation of Scientific Work. — Prof. W. Ba'eson, 



F.R.S. ; J. S. Gamble, F.R.S.;Sir Ronald 



Ross, K.C.B., F.R.S.; Dr. E. J. Russell, 



F.R.S. ; Prof. A. C. Seward, F.R.S. 6 



The Constitution of the Elements— Dr F. W. Aston 8 



Deflection of Light during a Solar Eclipse. — J. A. 



Or nge; Dr. A. C. D. Crommelin 8 



Perimeter of an Ellipse. — R. A. P. Rogers . . . 8 

 Scientific Research and the Glass Industry in the 



United States. By Dr. M. W. Travers, F.R.S. 9 

 The Circulating Blood in W elation to Wouijd-shock. 



By Prof. W. M. Bay liss, F.R.S 10 



Characteristics of Pigments in Early Pencil Writing. 



(Illustrated.) By C. Ainsworth Mitchell 12 

 The Relationship of Education to Research in 



Aeronautics 14 



Notes 17 



Our Astronomical Column : — 



Occultation of a Star by Saturn " , . 22 



The Nautical Almanac for 1922 22 



Calendar Reform 22 



The Association of Technical Institutions 22 



The Einstein Deflection of Light. (PVM Diagram.) 



By Dr. A. C. D. Crommelin 23 



The New Zealand Institute 24 



The Geology of the West Indies 24 



University and Educational Intelligence ... 2.5 



Societies and Academies 26 



Books Received 27 



Diary of Societies 27 



Editoriai and Publishing Offices : 



MACMILLAN AND CO., Ltd., 



ST. MARTINIS STREET, LONDON, W.C.2. 



Advertisements and' business letters to be addressed to the 

 ',. Publishers^ 



Editor. i9l Cpinmunications to the Editor. 

 Telegraphic Address : Phvsis, London. .,,^j^.^ , . .^.. 

 Telephone Number: Gerrard 8830. 



NO. 



2627, VOL. 105] 



