Pe - Pr -- 52 -- Petroleum Jelly, The Use of the Pene- trometer in the Determination of Consistency of, by R. T. Dobson, 5, 236. pH Value and Its Implications,, by R. H. Marriott, 6, 289. Pharmacologist Delves in Cosmetics., John H. Draize, 9, 133. Pharmacology of Chemical Irritation, The, by Lloyd W. Hazleton, 1, 161. Photomicrographic Technique for Study- ing Hair Soils and Detergency, A., by J. C. Ervin, 3, 81. Photomicrographic Techniques for Hair, Some, Murray Berdick, Everett G. McDonough, 9, 86, Physical Chemical Properties of Stearic Acid, Some, by C. C. Tillotson, 6, 40. Physico-Chemical Properties of Keratin Fibres and their Significance in Cos- metology, Some, J. L. Stoves, 2, 158. Physiological and Pathological Epider- mal Keratinization, Biochemical Data on, by Peter Flesch, 7, 521. Physiology and Histochemistry of Hair Growth, The, by Herman B. Chase, 6,9. Physiology and Pathology of Kerati- nization, by Stephen Rothman, 7, 576. Physiology Following Continuous Use of Soaps, and Detergents, Alterations in the Skin, Donald J. Birmingham, 6, 3. Pigmentation, Methods of Increasing Skin, S. William Becker, Jr., 9, 80. Pigmentation of the Skin, Methods for Reducing Melanin, Norman B. Kanof, 9, 160. Pigmentation, Skin and Hair, A. L. Lorincz, 9, 197. Pigment Melanin of the Skin and Hair, The, by Samuel M. Peck, 1, 33. Pigments, by J. K. Barraclough, and H. Webb, 4, 141. Pigments, Lakes and Dyestuffs in Cos- metics, by D. F. Anstead, 10, 1. Plastic Coated Push Button Containers, A. R. Marks, and E. Budzilek, 8, 386. Plastics for Packaging, by L. F. Bull, 7, 374. Polyethylene as a Packaging Material, by Robert H. Marriott, 3, 163. Polyethylene Bottles, High Density, by Edward J. Temple, 10, 199. Polymer Solutions, as Related to Sus- pending Ability, The Rheology of Natural and Synthetic Hydrophilic, by R. J. Meyer and L. Cohen, 10, 143. Polymorphism of Glycerides-An Ap- plication of X-ray Diffraction, The, by E. S. Lutton, 6, 26. Polyoxyalkylene Nonionics for Cosme- tics, New, Carl Pacifico, M. G. Kramer, and R. M. Abbott, 3, 303. Polyvinyl Chloride as a Packaging Ma- terial, by K. G. Johnson, 7, 384. Polyvinylpyrrolidone (PVP)-A Useful Adjunct in Cosmetics, by Herman A. Shelanski, Morris V. Shelanski, and A. Cantor, 5, 129. Polyvinylpyrrolidone, Its, Manufacture, Properties and Use in Cosmetics, I. Greenfield, 8, 196. Potential Utility of Ion-Exchange Resins in Antiperspirant-Deodorant Formu- lations, by James C. Winters, 7, 256. Potentiometric Methods, Measurement of Skin Moisture by, by Isaiah S. Botwinick, 10, 377. Poucher, William A., The Man, by H. Gregory Thomas, 6, 76. Poucher, William A., The Pioneer, by Pierre L. Bouillette, 6, 69. Powder, Zinc Oxide in Face, L. D. Grady, 1, 17. Practical Aspects of Emulsion Formu- lation, by I. R. Hollenberg, 1, 368. Practical Evaluation of Chlorophyll in Controlling Breath Odors, by Joseph W. E. Harrisson, Kurt S. Konigs- bacher, William H. Danker, J. W. Hein, Gerald J. Cox, Wah Leung, and Robert Heggie, 4, 9.

-- 53 -- Pr- Ps Present Role of Detergents in Toilet Bar Manufacture, The, John W. McCutcheon, 9, 270. Preservation of Cosmetic Emulsions, Factors to be Considered in the, Lin- wood F. Tice and Martin Barr, 9, 171. Preservation of Toilet Preparations Con- taining Nonionics, Doreen L. Wedderburn, 9, 210. Preservatives. II, The Interference of Nonionic Emulsifiers with, by M. G. de Navarre and Harold E. Bailey, 7, 427. Preservatives. III, The Interference of Nonionic Emulsifiers with, M. G. de Navarre, 8, 68. Preservatives and Antiseptics, Nipa-Es- ter Combinations as, Erich Boehm and Elizabeth Jones, 8, 30. Preservatives on Organism Growth in Typica! Nonionic Emulsified Com- mercial Cosmetics, The Effect of Sorbic Acid and Other, by R. Donald Charles and Phyllis J. Carter, 10, 383. Preservatives, The Interference of Non- ionic Emulsifiers with, VIII, by Johanna Poprzan and Maison G. de Navarre, 10, 81. Preservatives with Special References to Cosmetics, The Interference of Non- ionic Emulsifiers with, M. G. de Navarre, 8, 371. President, Annual Report of the, S. J. Strianse, 9, 75. President, Annual Report of the, by James H. Baker, 10, 65. President's. Luncheon Address, James H. Baker, 9, 78. President's Newsletter, 7, 487. Pressure, Formulating for, Morris. J. Root, 7, 149. Pressurized Packaging, Nitrogen and Other Inert Gases as Propellents in, Samuel Prussin and H. R. Shepherd, 9, 344. Pressurized Packs, Method for Deter- mining Spray Patterns from, K. Dixon, 10, 220. Pressurized Products, Perfumes in, J. Pickthall, 1o, 231. Principles and Techniques of Radio- isotope Applications, by Richard E O'Toole, 7, 132. Problem Solving: Some Thougths on Methods and People, Derek E. Till, 8, 328. Procedures for Testing the Efficiency c•f Deodorants., by Edward Sagarin, 4, 109. Product Claims, Your Share of the Res- ponsibility for, by William L. Hanaway, 1, 156. Product Development, Consumer Test- ing as a Guide to, by N.H. Ishler, 10, 176. Product, Development of a New, by R. T. Dobson, 7, 402. Product Testing, Reports on Labora- tory Methods for, Aerosols., 9, 105. Antiperspirants and Deodorants, 108. Creams and Lotions., 111. Shampoos, 113. Waving Lotion, 188. Propellants for Cosmetic Products, Com- pressed Gases. as, A. Herzka, 10, 226. Propellent in Aerosol Products, The, by Fred T. Reed, 7, 137. Propellents in Pressurized Packaging, Nitrogen and Other Inert Gases. as, Samuel Prussin and H. R. Shepherd, 9, 344. Protein Materials, The Absorption of N-Acyl Sarcosines on Various, M. F. Nelson, Jr., and D. Stewart, Jr., 7, 122. Proteins of Epidermis and Their Pos- sible Relation to Aging Skin, The Structural, by C. Carruthers, D. L. Woernley, A. Baumler, and H. Shorts, 6, 324. Proteins, Some Aspects of the Oxi- dative Dyeing of Keratinous, by Harold Burton, 2, 240. Psychological Properties of Cosmetics, Experimental Analysis of the, by Dean Foster, 4. 83.