ACYLATED AMINO ACIDS IN SHAMPOOS 415 sarcosine on the other. It is well known now that soap is a defoamknt for alkyl aryl sulfonates and vice versa this principle is even utilized in the for- mulation of low foam laundry detergents. In Fig. 7, it will be noted that the addition of sodium lauroyl sarcosinate to alkyl aryl sulfonate in- creases foam quite markedly. In the case of lauryl sulfate the effect is not quite as dramatic in soft water (Fig. 8), but quite remarkable in hard water (Fig. 9). To summarize, lauroyl sarcosine possesses many properties of interest in shampoos. It is suitable for use in aerosol formulations and lends itself readily to blending with other surface-active agents. Lauroyl sarcosine and acyl sarcosines generally should prove to be an important addition to the cosmetic chemist's formulary. dcknowledgment: The authors gratefully acknowledge the assistance of the Research and Development Departments of the Geigy Chemical Corporation. REFERENCES (l) German Patent 635,$22. (2) Fosdick, L. S., Calandra, J. C., Blackwell, R. Q., and Burrell, J. H., y. Dental Research, 32, 486 (1953). (3) Dreger, E. E., Keim, G. I., Miles, G. D., Shedovsky, Leo, and Ross, John, Ind. EnX. Chem., 36, 610 (1944). (4) BIOS Final Report 418, p. 11 FIAT Final Report 1141, p. 8. (5) Iwasenko, Helene, •e. Assoc. Od•c. Agr. Chemists, 37, 534 (1954). (6) Troll, Walter, y. Biol. Chem., 202,479 (1953).

EIGHTH MEDAL AWARD ß DR. ER•F. sT GVF.•THF. R, internationally known perfumer and chem- ist, will receive the Society of Cosmetic Chemists' Medal Award for 1955. The presentation will be made at the Society's winter meeting, December 15th, at the Hotel Commodore, New York City. . %....... •%. • : . .. ' --. . -- ......., ½ 7' ..:. ..= .•.: .... . .. Awarded this year for the eighth time, the medal honors distinguished contributions to the science and art of cosmetics. Dr. Guenther, vice-presi- dent and technical director of Fritzsche Brothers, Inc., has been outstand- ing in the field of perfumery for the past three decades. His writings on fragrances and related subjects have been widely published. Born in Munich, Germany, Dr. Guenther was educated at the Univer- sity of Zurich, Switzerland, receiving his doctorate in 1920 under the tute- lage of Professor Paul Karrer, a Nobel Prize winner. Dr. Guenther came to the United States in 1924, when he joined Fritzsche Brothers as chief research chemist. In his extensive explorations into the science of fragrances Dr. Guenther has visited virtually every essential oil-producing region in the world, being equally at home in field factory and laboratory. His world-wide studies' have resulted in the establishment of precise specifications and rigid stand- ards of purity for essential oils, which are the basis for today's vast per- fumery and cosmetic industries. The Medal Award presentation will be given in detail in an early edition of the JOUP, NAL in 1956. 416