DECEMBER, 1951 THE ANALYST Vol. 76, No. 909 PROCEEDINGS OF THE SOCIETY OF PUBLIC ANALYSTS AND OTHER ANALYTICAL CHEMISTS AN Ordinary Meeting of the Society was held at 7 p.m. on Wednesday, October 3rd, 1951, in the Meeting Room of the Chemical Society, Burlington House, London, W.l. The Chair was taken by the President, Dr. J. R. Nicholls, C.B.E., F.R.I.C. The following papers were presented and discussed : “A Critical Investigation of the Use of the Silver Reductor in the Micro-Volumetric Determination of Iron, especially in Silicate Rocks,” by Christina C. Miller, Ph.D., DSc., F.R.S.E., F.H.-W.C., and Robert A. Chalmers, B.Sc.; “A Technique to Improve the Efficiency of Desiccators,” by J. King, O.B.E., F.R.I.C. ; “Controlled Potential Electrolysis in the Analysis of Copper-Base Alloys,” by G.W. C. Milner, B.Sc., F.R.I.C., A.Inst.P., and R. N. Whittem, B.Sc., A.R.I.C. NEW MEMBERS Houston Adam Anderson, A.R.I.C., A.I.M. ; John Banks, A.H.-W.C., A.R.I.C., M.1nst.F. ; Arthur Bilsborough; Andrew Carey, Ph.C., M.P.S. ; Alan John Durre, M.Sc. (Melbourne) ; Leslie Norman Harper; Cyril David Hough, B.Sc. (Lond.), A.R.I.C.; Alan Macey, B.Sc., Ph.D. (Birm.), A.R.I.C. ; George Edward Maxwell, A.R.I.C. ; Dennis Francis Pinnington; Geoffrey Irving Smales, B.Sc. (Lond.), A.R.I.C. DEATHS WE regret to record the deaths of Frederick Charles John Bird Richard Victor Briggs Henry Edward Cox Fred Beresford Richardson Charles Reginald Wilkins. A MEETING Of the Grow MICROCHEMISTRY GROUP was held iointlv with the LiverDool and North-Western Section of the Royal Institute 0; Chemistry ’on Thursday, OctoberL18th, 1951, in Liverpool. Some mem’tters of the North of England Section also participated.During the afternoon visits were made to the works and laboratories of Lever Brothers {Port Sunlight) Ltd., and J. Bibby & Sons Ltd., Liverpool. In the evening a meeting was held in the Chemistry Lecture Theatre of the University of Liverpool. The following papers on Chemical Microscopy were presented and discussed : “Some of the Principles of Quantitative Microscopical Analysis,” by ,J. G. A. Griffiths, B.A., Ph.D., F.R.I.C. ; “Some New and Simple Techniques for the Application of Fluorescence Microscopy,” by J. King, O.B.E., F.R.I.C. ; “Applications of Polarisation Microscopy in Chemical Practice,’’ by N. H. Hartshorne, M.C., M.Sc., Ph.D., F.R.I.C.About 200 members and guests were present. PHYSICAL METHODS GROUP THE Thirty-third Ordinary Meeting of the Group was held at 7 p.m. on Friday, October 19th, 1951, at the William Newton School, Norton. This was a joint meeting with the Tees-side Section of the Royal Institute of Chemistry and was preceded by a visit to the new Research Lahoratory of British Titan Products Co. Ltd., at Billingham. The meeting was opened by Mr. Newton Wilson, who invited Mr. B. S. Cooper to take the Chair. Fifty-two members and visitors were present. 679680 OBITUARY [Vol. 76 The following papers on Physical Methods in the Pigment Industry were presented and discussed: “Physical Methods in the Titanium Pigment Industry,” by F. R. Williams, Ph.D., F.R.I.C.; “Rapid Methods of Quantitative Analysis of Rutile - Anatase Mixtures,” by W. Hughes, Ph.D., and H. Smith, M.Sc.; “Surface Area Measurements by the High Vacuum Nitrogen Adsorption Method,” by C. T. Morley Smith, B.Sc., F.R.I.C. BIOLOGICAL METHODS GROUP A MEETING of the Group was held at the Medical Society of London, Chandos Street, London, W.l, on Friday and Saturday, October 26th and 27th, 1951. The meeting was in the form of “A Symposium on the Evaluation of Chemotherapeutic Substances,” and the Chair was occupied by Dr. G. M. Findlay. ?he first part of the meeting was held in the afternoon and evening of Friday, October 26th, and began a t 2.30 p.m., with a break for tea. After the Chairman’s Introduction the meeting was devoted to “Antibiotics, Antituberculous and Antiviral Substances,’’ and the following papers were presented and discussed : “The Design of Antibiotic Assays,” by Dr.W. L. M. Perry; “Evaluation of the Biological Properties of Newly-Isolated Anti- biotics,” by Dr. J. Ungar; “Factors Determining the Character of Inhibition Zones,” by Dr. J. H. Humphrey; “Evaluation of Antituberculous Compounds in vivo,” by Dr. J. M. Robson ; “Practical Aspects of the Routine ’Testing of Antituberculous Compounds,” by Dr. A. R. Martin; “Evaluation of Antiviral Compounds,” by Dr. L. Dickinson. The second part of the meeting was held. on the morning of October 27th and began at 10 a.m. The meeting was devoted to “Antiprotozoal Substances,’’ and the following papers were presented and discussed : “The Evaluation of Amoebicidal Substances in vivo,” followed by a film, “The Chemotherapy of Experimental Amoebiasis,” by Dr. L. G. Goodwin; “Routine Testing of Amoebicidal and Leishmanicidal Agents,” by Dr. J. D. Fulton ; “The Evaluation of Chemotherapeutic Agents directed against Trypanosome Infections,” by Dr. E. M. Lourie; “The Evaluation of Antimalarial Substances,’’ by Dr. D. G. Davey; “Problems of Drug Resistance, with Special Reference to Malaria,” by Dr. Ann Bishop. The Chairman’s Summary followed. About 75 members and guests were present,