NATURAL HAIR COLOR 609 ACKNOWLEDGMENT The polar coordinate method of hair color classification was suggested by H. Bogaty. The authors are grateful for this extension of their work. REFERENCES (1) Chapanis, A., Color names for color space, Am. Scientist, 53 (No. 3), 327 (1965). (2) Trotter, M., Classifications of hair color, Am. J. Phys. Anthropol., 25 (No. 2), 237 (1939). (3) Garn, G. M., Ph.D. thesis, Harvard (1948). (4) Munsell Color Co., Munsell Color Charts for Judging Skin-Hair-Eye Colors, Selected from Munsell Soil Color Charts Collection. Baltimore, Md. (5) Gardner, B. B., and Mac Adam, D. L., Colorimetric analysis of hair color, Am. J. Phys. Anthropol., 19 (No. 2), 187 (1934). ({5) Den Beste, M., in preparation. (7) Hardy, A. C., Handbook of Colorimetry, The Technology Press, Massachusetts Institute of Technology, Cambridge, Mass., 1936. (8) Billmeyer, F. W., and Saltzmann, M., Principles of Color Technology, Interscience Pub- lishers, New York, N.Y. 1966. (9) Final Report of the O.S.A. Subcommittee on the Spacing of the Munsell Colors, J. Opt. .$'oc. Am., 33, No. 7, 385-415 (1943). Diagrams available from: Munsell Color Co. Inc., :2441 Calvert St., Baltimore, Md. 21218.

610 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Society of Cosmetic Chemists 1968 Seminar The 1968 Seminar of the Society of Cosmetic Chemists will be held September 12-13, 1968, at the Sheraton Hotel, Boston, Mass. The Seminar theme is "Cosmetic Aerosols Technology and Marketing." PROGRAM Marketing Section iVew 2Vfarketing Aspects of Aluminum Aerosol Contcziners in the Drug and Cosmetic Field. Frank Rubino, Peerless Tube Company. The Mystical, Magical l/Vorld of Aerosols. Bernard A. Rausch, E. I. du Pont de Nemours & Company. The Shaving Cream Olympic Games. Robert J. Pietrzak, Gillette Safety Razor Co. Technical Section Alcohol Quality and the Degradation of Aerosol l-' 'od•ects and Packages. R.F. Robey, Enjay Chemical Laboratory. An Evaluation of the Single Stage Undercap Filler for Cosmetic an Pharmaceutical Aerosol Products. R.T. Voegeli, J. B. Ward and H. H. Hutchins, Johnson & Johnson. Technology of Consistent Aerosol Foam Dispensing 1I'ithoul Costly Gadgerry. Carmelo Carrion, Jr., and Harry W. Mace, Aerosol Techniques. A Comparative Evaluation of Aerosol Containers, lZalz'es and Gaskets W•th Respect to Minimizing Weight Loss. F.J. Stanave, J. B. Ward and H. H. Hutchins, Johnson and Johnson. Aerosol Formulations--A General Outline. P. Sgaramella, Beecham. In Vivo Evaluation of Aerosol Sprays in the Human Eve. Morris V. Shelanski, Food and Drug Research Laboratories. Fluorinated Additives in Aerosol Cosmetics. Brant B. Cover, Pennsalt Chemicals. A Rationale for the Physical Measurements of Hozesehold and Cosmetic Aerosols. S. Posner, J. Scheimberg, R. Goldhamer and S. Carson, Food and Drug Research Laboratories. Ezaluation of Several Methods for the Determination of Parlicle Size Distribution of Selected Aerosol Cosmetics. John J. Sciarra, St. John's University. Sludies of New Aluminum Compounds for Antiperspirant Use. II. Stewart M. Beekman, James M. Holbert and Horst W. Schmank, Chattern Chemicals. The Identification and Quantitative Determination qf Propellants in Aerosols. William R. Murphy, Gillette Safety Razor Company. iVew Concepts in Pressurized Packaging. Morris J. Root, G. Barr Company. Rheological Evaluation of Aerosol Systems Under Press•re. Ralph Shangraw, University of Maryland. F, ffecl of Vapor Tap Valves on Propellant-Produc! Ratio. Allied Chemical Corporation.