934 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Kelly, J.J. The kinetic angle of repose of powders, 37 Kondo, $higeo. See Adachi, Kenji. Krs, V. See •eni•ek, Antonin. Kumano, Yoshimaru. See Fujiyama, Yo- shio. Laden, Karl, and Morrow, Robert. Tor- sional measurements on skin, 417 Lamy, P. P. See Block, L. H. Lin, T.J. Surfactant location and required HLB, 365 Lissant, K.J. Geon•ctry of emulsions, 141 Lloyd, P. J., Yeung, P. c. M., and Fresh- water, D.C. The mixing and blending of powders, 205 Maibach, H.I. See Marzulli, F. N. Martin, G.N. See Yankell, S. L. Martz, R.C. See Youkilis, G. J. Marzulli, F. N., and Maibach, H. I. Per- fume phototoxicity, 695 McDowell, R. H. New reactions of pro- pylene glycol alginate, 441 Messinger, Monroe. See Abate, Vincent. Miles, J. E. P. Some aspects of the flow of particulate materials from hoppers, 53 Mohr, G. See Kabacoff, B. L. Morrow, Robert. See Laden, Karl. Nack, Herman. Microencapsulation tech- niques, applications and problems, 85 Neumann, B. S., and Sansom, K.G. Lapo- nite clay--a synthetic inorganic gelling agent for aqueous solutions of polar organic compounds, 237 Nixon, J. R. oeee Carless, J. E. Paukner, Ernst. So•called odor eliminators, 801 Piechuta, H. See Yankell, S. L. Polon, J.A. The mechanisms of thickening by inorganic agents, 347 Prince, L.M. Microemulsions, 193 Pugh, B.R. See Wilkinson, J. B. Puttnam, N.A. See Cropper, E. Rahman, M.A. See Williams, J. c. Randebrock, R. E. Application of an ol- factometer, 289 Robbins, C. R., and Scott, G.V. Prediction of dry extension properties of keratin fibers from wet extension data (letter to editor), 639 Robey, R. F. Alcohol quality and the deg- radation of aerosol products and pack- ages, 183 Ross, Lisa. See Scheuplein, Robert. Sanders, P. A. Stabilization of aerosol emulsions and foams, 377 Sansore, K.G. See Neumann, B. S. Schaubman, Ronald. See Fehneister, Alvin. Scheuplein, Robert, and Ross, Lisa. Effects of surfactants and solvents on the per- roeability of epidermis, 853 Schmid, Otto. Animal testing for determi- nation of skin tolerance, 835 Sciarra, J. J., and Gidwani, Ram. The re- lease of various ingredients from aero- sols containing selected film-forming agents, 667 Scott, G.V. See Robbins, C. R. Seelig, L. L., Jr. See Bollinger, J. N. Smith, E.A. Very fine particles, 563 Smith, J. M. The mixing of Newtonian and non-Newtonian fluids, 541 Tahara, Sadaaki. See Fujiyama, Yoshio. Takashima, Iwao. See Adachi, Kenji. Takayasu, Susumu. See Adachi, Kenji. Tronnier, Hagen. Cosmetics with vascular activity, 299 Watson, C.A. Synthetic hydrocolloids and dentifrices, 459 Wilkinson, J. B., and Pugh, B. R. Tooth- pastes--cleaning and abrasion, 595 Williams, J. c., and Rahman, M. A. The continuous mixing of particulate solids, 3 Wolfram, L. J., Hall, K., and Hui, I. The mechanism of hair bleaching, 875 Wolfram, M.A. See Elfbaum, S. G. Woodroffe, R. C. S. See Elkhouly, A. E. Yankell, S. L., Martin, G. N., Piechum, H., Hockett, W. A., and Dolan, M. M. Solar simulator sunscreen evaluations in guinea pigs, 607 Yeung, P. C.M. See Lloyd, P. J. Youkilis, G. J., Martz, R. C., and Harris, P.D. Direct observation and quantita- tion of subcutaneous microcirculatory ,, ,,responses •to exogenous agents, 845 Zenisek, Antonin, and Krs, V. Ultraviolet irradiation of human skin and histidase activity, 817

SUBJECT INDEX TO VOLUME 21 Abrasion, measurement of, in toothpastes by radiotracer technique, 595 Acetic acid, trichloro-, effect of, on mechani- cal properties of stratum comeurn strips, 129 Adenyl cyclase system, in studies of inetab- olism of human hair follicles, 901 Aerosols, containing film-forming agents, re- lease of various ingredients from, 667 effect of alcohol quality on degradation of, 183 effect of valve body orifice size on propel- lant/concentrate ratio in, 661 emulsions and foams, stabilization of, 377 powder formulations, problems and recent developments, 553 Alcohol, effect of quality of, on degradation of aerosol products and packages, 183 Alkali, dilute, in extraction of proteins from human epidermis, 169 Amides, Kritchevsky, and super-, study of composition of, by column chromatogra- phy and infrared spectroscopy, 107 Ammonium thioglycolate, effect on mechani- cal properties of stratum comeurn strips, 129 Angles, kinetic and static, of repose of pow- ders, 37 Animals, testing of, for determination of skin tolerance, 835 Antisera, against proteins extracted from hu- inan epidermis, 169 Baldness, and study of metabolism and con- trol inechanisms of human hair follicles, 901 Bat wing preparation for study of subcuta- neous microvascular responses to exog- enous agents, 845 Bath oils, vegetable and inineral, adherence to keratin, 613 Bergamot in perfumes, phototoxicity of, 695 Bleaching of hair, mechanism of, 875 Cancer, breakdown of homeostatic mecha- nisms in, 503 Carbohydrate metabolism in human hair follicles, 901 Cellulose, derivatives of, use in dentifrices, 459 935 Centrifugation, ultra-, for prediction and evaluation of emulsion stability, 393 Chalones, new group of chemical inessengers distinguished from hormones, 503 Chemical differentiation in epiderinis, 583 Chromatography, column, and infrared spec- troscopy, in analysis of fatty alkanol- amides, 107 gas, determination of fluoride in dental creams, 533 gas-liquid, of its trimethylsilyl derivative for determination of hexachlorophene, 683 thin-layer, gas-liquid, and column, com- bined techniques for characterization of natural and synthetic waxes, 119 Clays, oeaponite, use as synthetic inorganic gelling agent for aqueous solutions of polar organic compounds, 237 Colloids, hydro-, synthetic, use in denti- frices, 459 Computers, scanning, use for correlation of primary odor with molecular shape, 99 Corrosion of aerosol products, effect of al- cohol quality, 183 Cosinetics, hygienic manufacture and pres- ervation of, 719 phototoxicity of, 695, 825 potential use in, of propylene glycol al- ginate reactions with gelatine, polyvinyl alcohol, and starch, 441 sampling and assessment of powder mix- tures for, 259 toxicological study of, 313 with vascular activity, 299 Creams, theological properties of, upon production scale-up, 625 Cystine, oxidation of, in hair bleaching, 875 Dentifrices, behavior of synthetic hydrocol- loids used in, 459 gas chromatographic determination of fluoride in, 533 measurement of cleaning and'abrasive performance in toothpastes, 595 Deodorant sprays, in study of effect of valve body orifice size on propellant/concen- trate ratio, 661