SOCIETY OF COSMETIC CHEMISTS OF GREAT BRITAIN 77 (Left to right): Mrs. Evelyn Forbes, Dr. R. H. Marriott (President), Mrs. Marriott, Mr. Hugo. ing nearly complete wettability of the surface by oil. Such coated powders were not held in the interface but were dispersed in the oil phase itself giv- ing an unstable emulsion. Similarly, if the contact angle was nearly zero then the particles were dispersed in the water phase and again did not con- tribute toward an unstable emulsion. Similarly, if the contact angle was nearly zero then the particles were dispersed in the water phase and again did not contribute toward emulsification. Where dicarboxylic acids were employed they could be chemi-sorbed on the solid surface horizontally and give a spacing effect which would enable other molecules to be sorbed in the mosaic pattern. The extent to which the particles were oil or water wettable, as a result of the sorbed surface, governed the type of emulsion which would be produced. When the particles were preferentially wetted with oil this caused them to spread out at the oil surface and close in on the water surface, so that a wa- ter-in-oil emulsion was produced. Conversely, if the particles were prefer- entially wetted with water then the particles at the water were spread out and packed together at the oil interface so that drops of oil were stabi- lized in a water continuum. This effect clearly followed from the statement that contact angles to the water of less than 90 give oil-in-water and greater than 90 a water-in-oil emulsion. The lecture was very well attended and considerable discussion ensued with Dr. Schulman giving the answers to a wide variety of questions which were put to him. ß Dr. Marriott proposed a vote of thanks for Dr. Schulman's exciting lec- ture and this was approved in the usual way. Further lectures given this session are: "Colour and Colour Vision," by Professor W. D. Wright on Feb. 5, 1954, and "Talking of Perfumes"

78 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS by J. Pickthall on Mar. 5, 1954. Both were held at the Royal Society of Tropical Medicine and Hygiene, 26 Portland Place, London, W.1. at 7 p.m. CHICAGO SECTION NEWS T.E GUES* SPEAKER for the January 12th meeting was Dr. George H. Goodyear, Midwest District Sales Manager of the Glyco Products Com- pany. He spoke on "Use of Chelating and Sequestering Agents in Cosmet- ics." The paper on which his talk was based was written by Dr. Goodyear and Buckley Hathorne, also of the Glyco Products Company. Both men have had extensive experience with sequestering agents, not only in cosmetics but in other industries as well. Dr. Herbert Heinrich, Research Director of the Kolmar Laboratories, Milwaukee, Wis., spoke at the February 9th meeting on "The Future of the Cosmetic Industry." At the March 9th meeting Lester I. Conrad, Technical Director of the American Cholesterol Products, Inc., of Milltown, N.J., was the guest speaker. His subject was "Newer Concepts of Lanolin Composition." Mr. Conrad has done intensive research on the subject and has to his credit several patents on the processing of sterol products and lanolin. He has also written several articles on the applications of sterols to various in- dustries. All the meetings are held at Henrici's Restaurant in the Merchandise Mart.