Pu - Ro -- 54 Purchasing Essential Oils, On, by W. R. Littlejohn, 6, 260. Quantitative Method for the Evaluation and Study of Shampoos, A, by G. Barnett and D. H. Powers, 2, 219. Quaternary Ammonium Compounds in Cosmetic and Related Products, by W. E. Botwright, 3, l l8. Radioactive Isotopes in Cosmetic Che- mistry- From a Dermatologist's Point of View, Some Uses and Limitations of, by Victor H. Witten, 6, 399. Radioisotope Applications, Principles and Techniques. of, by Richard E. O'Toole, 7, 132. Radioisotope Techniques in the Study of Percutaneous Absorption, by Frederick D. Malkinson, 7, 109. Radioisotopes. in Cosmetics, Introduction to the Testing of, by Louis C. Barall and J. J. Pescatore, 2, 277. Radioisotopes in Detergent and Cosmetic Research, Use of, by M. F. Nelson, 10, 320. Radiotracers to Study Absorption by Hair, The Use of, by Howard J. White, Jr., and Donald L. Underwood, 7, 198. Ralph Liggett Evans, Medalist, Foster Dee Snell, 2, 43. Rancidity in Soap, by W. W. Myddleton, 5, 278. Rationale of Odor Classification, The, by Ernest C. Crocker, 2, 15. Reactions to Allergens and Irritants in Cosmetics., Cutaneous, J. L. Morse, 1, 246. Recent Developments in the Field of Essential Oils, by Ernest Guenther, 7, 290. Recent Developments. in the Structure of Keratin Fibers, by Richard Steele, 3, 99. Recent Progress in Ambergris Research, Max Stoll, 9, 167. Recent Progress. in the Chemistry of Disulfides, by Norman A. Rosenthal and Gerald Oster, 5, 286. Records and Costings in the Perfumery and Cosmetic Industry, by E. Polan, 6, 251. Reed, President, Society of Cosmetic Chemists, Address of Mr. Raymond E., 2, 1. Reed, President, Society of Cosmetic Chemists, Meeting, May 20, 1949, Welcome of Mr. Raymond E., 1,301. Report of Subcommittee on Wavir•g Lothion Evaluation, 9, 188. Reports on Laboratory Methods for Product Testing, Introduction, Donald H. Powers, 9, 103. Requirements of Cosmetic Chemists, Educational, by Curt P. Widmer, 1, 210. Research Expects of Management, What, Walter J. Hamburger, 5, 260. Research, What Management Expects of, Raymond Stevens, 5, 308. Resins, Ion Exchange, T. R. E. Kressman, 8, 212. Resins, Waxes, etc., A Method for De- termining the Apparent Melting Point of, 2, 157. Response of the Human Sebaceous Gland to Experimental Stress, by John S. Strauss, 10, 192. Rheological Review for Cosmetic Che- mists, A. L. Scarbrough, 8, 306. Rheology of Disperse Systems., Intro- duction to the, by A. de Waele, 7, 336. Rheology of Natural and Synthetic Hy- drophilic Polymer Solutions as Re- lated to Suspending Ability, by R. F. Meyer and L. Cohen, 10, 143. Role of Apocrine Sweat in the Pro- duction of Axillary Odor, The, by Walter B. Shelley, 7, 171. Role of Color in Cosmetics, The, D. H. Powers, 7, 541. Role of Detergents in Shampoos, by Donald H. Powers and Charles Fox, 10, 116. Role of Disulphides and Mercaptans in Hair Chemistry, The, by J. L. Stoves., 3, 170.

-- 55 -- Ro - Sk Role of the Lactobacillus Test in the Control of Dental Caries, The, by Philip Jay, 2, 81. Rotational Methods of Flow Measure- ment, Walter F. Asbeck, 8, 282. Safety of Cosmetics, Evaluation of Effi- cacy and, by Albert F. Guiteras, 1, 22. Sarcosines on Various Protein Mate- rials, The Absorption of N-Acyl, M. F. Nelson, Jr., and D. Stewart, Jr., 7, 122. Scenting of Cosmetics, The Correct, by A. L. van Ameringen, 1, 262. Sebaceous Gland, Response of the Hu- man to Experimental Stres.s, by John S. Strauss, 10, 192. Seborrheic Eruptions, Modern Concept and Treatment of Dandruff and, Joseph V. Klauder, 7, 443. Sebum, Biochemistry of, by Victor R. Wheatley, 10, 206. Second Honorary Member, Austin Smith, by Howarr T. Behrman, 2, 100. Second Medal Award, The, 2, 43. Second Special Award, 7, 497. Selenium Sulfide as an Antinandruff Agent, by Edward J. Matson, 7, 459. Seminar Discussions, 1955, 7, 268. Sensitization, The Sequence of Events in the Development of an Eczema- tous, by Adolph Rostenberg, Jr., 6, 34. Sensory Reactions in Numbers Instead of in Adjectives, Evaluating, by J. M. Juran, 3, 278. Sequence of Events in the Development of an Eczematous Sensitization, Th_e, by Adolph Rostenberg, Jr., 6, 34. Sequestering Agents in Cosmetics, Uses of Chelating and, by G. H. Goodyear and B.L. Hathorne, 5, 96. Seventh Honorary Membership, 7, 215. Seventh Medal Award, 6, 58, 69-95. Shampoo Formulation, by H. W. Zussman, 1, 355. Shampoo, The Evaluation of a, by William W. Myddleton, 4, 150. Shampoos, A Quantitative Method for the Evaluation and Study of, G. Barnett and D.H. Powers, 2, 219. Shampoos, Acylated Amino Acids in, by H. W. Zus•sman, and W. J. Lennon, 6, 407. Shampoos, Alkylolamides in, by H. L. Sanders, E. A. Knaggs and O. E. Libman, 5, 29. Shampoos, Amine Soap Hair, by Helen E. Wassell, 4, 282. Shampoos, Iodophor-Iodine, by A. Cantor, S. Most and M. V. Shelanski, 7, 419. Shampoos on to Hair, The Sorption of Amino Acids from, J. H. Herd, and R. H. Marriott, 10, 272. Shampoos, Reports on Laboratory Me- thods for Product Testing, 9, 118. Shampoos, The Role of Detergents in, by Donald H. Powers and Charles Fox, 10, 116. Shelley, Walter B., Recipient Second Special Award, 7, 500. Silicone Compounds in Dermatology and Cosmetics, The Uses and Newer Applications of the, by I. I. Lubowe, 6, 19. Silicones for the Cosmetic Industry, New, by C. C. Currie and R. C. Ger- gle, 7, 234. Silicones in the Cosmetic Industry, T. W. Watson, 8, 25. Simple Floral Perfumes, by E. S. Maurer, 4, 179. Simplified Method for Determining the Approximate Bacteriostatic Potency of Chemicals, A, by Arthur R. Cade, 1, 394. Sixth Honorary Membership, 5, 134. Sixth Medal Award, 5, 53, 6, 69. Skin: A Review, Hypo-and Hyperpig- mentation of the, by Sidney G. Clyman, 4, 245. Skin and Hair Pigmentation, A. L. Lorincz, 9, 197.