446 NATURE March 7, 1953 VOL. 171

BEDSON CLUB (in Lecture Theatre I, Chemistry Building, King's FORTHCOMING EVENTS College, Newcastle-upon-Tyne), at 5.30 p.m.-Dr. F. Fairbrother: "Catalytic Inorganic Halides and the· Friedel-Crafts Reaction" (89th (Meetings marked with an asterisk • are open to the public) Bedson Lecture). INSTITUTION OF MECHANICAL ENGINEERS (at Storey's Gate, St. Monday, March 9 James's Park, London, S.W.1), at 5.30 p.m.-"Steels for Steam Power UNIVERSITY OF LONDON (at Bedford College, Regent's Park, London, Plant" : a review of work of a Sub-Committee of the British Electrical N.W.1), at 5.15 p.m.-Prof. S. Bergstrom: "Intestinal Absorption of and Allied Industries Research Association between 1930 and 1951, Fat~"-* compiled by A. M. Sage. INSTITUTION OF ELECTRICAL ENGINEERS (at Savoy Place, Victoria UNIVERSITY OF LONDON (at King's College, Strand, London, W.C.2), Embankment, London, W.C.2), at 5.30 p.m.-Discussion on "Is the at 5.30 p.m.-Prof. R. Plank (Karlsruhe) : "Absorption Re• Presentation of Technical Literature Adequate ?" (to be opened by frigeration".• Prof. M. G. Say). ROYAL INSTITUTION (at 21 Albemarle Street, London, W.1), at MANCHESTER LITERARY AND PHILOSOPHICAL SOCIETY (in the 9 p.m.-Prof. L. Hawkes, F.R.S.: "Geology and Time". Reynolds Hall, College of Technology, Manchester), at 5.30 p.m.-Prof. R. A. Fisher, F.R.S. : "The Evolution of Genetics" (Ramsden Memorial Lecture).• ROYAL GEOGRAPHICAL SOCIETY (at 1 Kensington Gore, London, S.W. 7), at 5.30 p.m.-"Western Nepal" (Colour films with commentary by Mr. 0. Polunin). APPOINTMENTS VACANT UNIVERSITY OF LONDON (at King's College, Strand, London, W.C.2), APPLICATIONS are invited for the following appointments on or at 5.30 p.m.-Prof. R. Plank (Karlsruhe): "Entropy and Prob• before the dates mentioned : ability".• CHEMIST (Senior Scientific Assistant) at the Central Laboratory, PHARMACEUTICAL SOCIETY (at 1 7 Bloomsbury Square, London, Chiswick, with responsibility for section concerned with wide variety W.C.1), at 7.30 p.m.-Dr. J. H. Burn, F.R.S.: "Progress in Bio• of analytical and investigational work other than metals, fuels, logical Standardization". lubricants and paints-The Staff Officer (F/EV.229), London Trans· ROYAL INSTITUTE OF CHEMISTRY, LONDON SECTION (joint meeting port, 55 Broadway, London, S.W.1 (March 13). with the WOOLWIOH POLYTE0HNIO SCIENTIFIO SOCIETY, at the Woolwich ASSISTANT CHEMIST AND BACTERIOLOGIST-The Chief Engineer, Polytechnic, Woolwich, London, S.E.18), at 7.30 p.m.-Dr. A. G. Mid-Wessex Water Company, Frimley Green, Aldershot (March 14). Maddock : "Developments in Experimental Techniques of Radio ASSISTANT INSPECTOR OF FISHERilllS AND POLLUTION-The Clerk to Chemistry". the Avon and Dorset River Board, Rostherne, 3 St. Stephen's Road, Bournemouth (March 14). Tuesday, March 10 EXPERIMENTAL OFFICERS IN THE GUIDED WEAPONS DEPARTMENT, ZOOLOGICAL SOCIETY OF LONDON (at the Zoological Gardens, Royal Aircraft Establishment, Farnborough, for work on design, Regent's Park, London, N.W.l), at 5 p.m.-Scientiftc Papers. development and performance of new weapons and associated guidance and control s;stems ; instrumentation of flight trials and Investigation ROYAL INSTITUTION (at 21 Albemarle Street, London, ,v.1), at of trials results-'.1.he Ministry of Labour and National Service, Tech• 5.15 p.m.-Prof. G. C. Varley: "The Causes of Insect Abundance". nical and Scientific Re~ister (K), Almack House, 26 King Street, Piccadilly, London, W.1), at with farm animals-The Secretary, Rowett Research Institute, Bucks• 11 a.m.-Discussion on "The Function and Location of Enzymes In bnrn, Aberdeenshire. Cells" (to be opened by Prof. J. Z. Young, F.R.S.). ASSISTANT LECTURER (Grade B) IN ELE0TRIOAL ENGINEERING-• ROYAL SOCIETY OF ARTS, COMMONWEALTH SECTION (at John Adam The Registrar, Hatfield Technical College, Roe Green. Hatfield, Herts. Street, Adelphi, London, W.C.2), at 5.15 p.m.-Prof. Raymond w. ASSISTANT WORKS MANAGER (with honours degree in chemistry or ]<'irth : "Social Changes in the Western Pacific". chemical engineering, A.R.l.C., A.M.I.Chem. .E., or equlvalPnt) !'OR UNIVERSITY of LONDON (at Bedford College, Regent's Park, London, ATOMIC ENERGY FACTORY at Salwick, Preston, to be responsible for N.W.l), at 5.15 p.m.-Prof. S. Bergstrom: "Formation and Inter• operation of chemical plants---The Ministry of Supply, Division of -conversion of Bile Acids".• Atomic Energy (Production), Risley, Warrington, Lanes, quoting INSTITUTE OF WELDING (joint meeting with the INSTITUTION OE' Ref. 425. STRUCTURAL ENGINEERS, at 11 Upper Belgrave Street, London, ELECTRICAL or MECHANICAL ENGINEER (Scientific . Officer grade) S.W.1), at 6 p.m.-Mr. E. M. Lewis: "Construction of the New at the Royal Aircraft Establishment, Farnborough, for research and Testing Laboratory of the British Weldini, Research Association at development in connexion with generation, conversion and control Abington". of electric power for aircraft-The Ministry of Labour and National Service, Technical and Scientific Register (K), Almack House, 26 ROYAL AERONAUTICAL SOCIETY (in the Rolls-Royce Welfare Hall, King Street, London, S.W.l, quoting D.54/53A . .Nightingale Road, Derby), at 6.15 p.m.-Squadron-Leader W. A. LECTURER IN CHEMISTRY, a LECTURER IN PHYSICR, a LECTURER Waterton: "Some Aspects of High Performance Jet Aircraft". IN MATHE)IATICS. a LECTURER IN ZOOLOGY AND BOTANY, an ASSISTANT FOR GEOGRAPHY.AND ENGLISH, and an ASSISTANT FOR MATHEMATICS Friday, March 13 -The Principal, Adisadel College, Cape Coast, Gold Coast (by air SOCIETY OF DYERS AND COLOURISTS, MANCHESTER SECTION (In the mall). Great Hall, College of Technology, Manchester), at 2 p.m.-Symposium SCIENTIFIC ASSISTANT, mainly to examine and abstract world on "Synthetic l•'ibres". scientific literature on grassland and field-crop research-The Director, Commonwealth Bureau of Pastures and Field Crops, Aberystwyth. ROYAL ASTRONOMIOAL SOCIETY (at Burlington House, Piccadilly SCIENTISTS (M.A., M.Sc. or Ph.D. or equivalent in one of the physical London, W.1), at 4.30 p.m.-Scientiflc Papers. ' sciences, mathematics, biomathematlcs, or mathematical economics, PHYSICAL SOCIETY (at the Science Museum, Exhibition Road, preferably with some industrial or laboratory research experience) London, S.W.7), at 6 p.m.-Prof. M. Born, F.R.S.: "The Conceptual FOR OPERATIONAL RESEARCH AND SYSTEMS ANALYSI&-The Director, Situation In Physics and its Prospects of Development" ( Guthrie Research Personnel, Defence Research Board, Department of National J,ecture).• Defence, 'A' Building, Ottawa, Canada.

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