FLORA OF SCALP AND DANDRUFF 133 (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (25) (26) (27) (28) (29) (30) (31) (32) (33) (34) (35) (36) (37) (38) (39) (40) Pillsbury, D. M., and Rebell, G., The bacterial flora of tile skin. Factors influencing tile growth of resident and transient organisms, J. Invest. Dermatol., 18, 173 (1952). Bergelm, O., and Cornbleet, T., Acidity of the scalp, nature and possible relationship to seborrhea, Arch. Dermatol. and Syphilol., 56, 448 (1947). Anderson, D. S., The add-base baNnee of the skin, Brit. J. Dermatol., 63,283 (1951). Herrman, F., Behrendt, H., and Karp, F. L., On the acidity of the surface of the scalp and other areas of the skin in children, J. Invest. Dermatol., 7, 215 (1946). Beare, J. M., Cheeseman, E. A., Galley, A. A. H., and Neill, D. W., The pH of the skin surface of children with seborrhoeie dermatitis compared with unaffected children, Brit. J. Dermatol., 70, 233 (1958). Kapica, L., and Blank, F., Growth of Candida albicans on keratin as sole source of nitro- gen, Dermatologica, 115, 81 (1957). Kapica, L., and Blank, F., Growth of Candida parapsilosis with keratin as sole source of nitrogen, ibid., 117, 433 (1958). Noval, J. J., and Niekerson, W. J., Decomposition of native keratin by Streptomyces fradiae, J. Bacteriol., 77, 251 (1959). Pramer, D., The influence of physical and chemical factors on the preparation of silica gel media, Appl. Microbial., 5,392 (1957). Temple, K. L., A modified design of the Lees soil pereolation apparatus, Soil Sci., 71, 209 (1951). Lees, H., and Quastel, J. H., Biochemistry of nitrification in soil. Addendum by Lees, H. A., A soil perfusion apparatus, Biochem. J., 40, 812 (1946). Roia, F. C., Jr., The resident microbial flora of the human scalp and its relationship to dandruff, Doctor of Philosophy Thesis, Massachusetts College of Pharmacy, Boston, 1967. Lodder, J., and Kreger-Van Rij, N.J. W., The Yeasts: A Taxonomic Study, North Holland Publishing Co., Amsterdam, 1952. Roia, F. C., Jr., The human scalp as a habitat for yeasts, Master of Science Thesis, Massachusetts College of Pharmacy, Boston, 1960. Barnett, H. L., Illustrated Genera of Imperfect Fungi, 2ud ed., Burgess Publishing Co., Minneapolis, Minn., 1962. Martin, G. W., Outline of the Fungi, Win. C. Brown Co., Dubuque, Iowa, 1950. Alexopoulos, C. J., [ntroductory Mycology, John Wiley & Sons, Inc., New York, 1952. Lewis, G. M., Hopper, M. E., Wilson, J. W., and Plunkerr, O. A., An Introduction to Medical Mycology, 4th ed., The Year Book Publishers, Inc., Chicago, 1958, pp. 423-40. Smith, N. R., Gordon, R. E., Clark, F. E., Aerobic spore-forming bacteria, U.S. Dept. Agr. Monograph, 16 (1952). Breed, R. S., Murray, E.G. D., and Smith, N. R., Bergey's Manual of Determinative Bacteriology, 7th ed., The Williams and Wilkins Co., Baltimore, 1957. Waksman, S. A., and Leehevalier, H. A. The Actinomycetes, Vol. II, The Williams and Wilkins Co., Baltimore, 1959. Breed et al., op. cit., pp. 694-829. Waksman, S. A., and Leehevalier, H. A., Actinomycetes and Their Antibiotics, The Williams and Wilkins Co., Baltimore, 1953. Raper, K. B., and Fennell, D. I., Th• Genus Aspergillus, The Williams and Wilkins Co., Baltimore, 1965. Raper, K. B., and Thom, C., A Manual of the Penicillia, The Williams and Wilkins Co., Baltimore, 1949. Ridgway, R., Color Standards and Color Nomenclature, published by the author, Washing- ton, D.C., 1912. Ainsworth, G. C., and Bisby, G. R., A Dictionary of the Fungi, 4th ed., The Common- wealth Mycologieal Institute, Kew Surrey, 1954, p. 300.

134 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS (41) (42) (43) (44) (45) (46) (47) (48) (49) (50) Barnett, op. cit., p. 86. Neergaard, P., Danish Species of Alternaria and Stemphylium, Hmnphrey Millford. Oxford University Press, London, 1945. Luttrell, E. S., A key to species of Helminthosporium reported on grasses in the United States, Plant Disease Reptr., Suppl. No. 201, 59 (May 15, 1951). Idson, B., Dandruff: Cause and control, Drug Cosmetic Ind., 96, 636 (1965). Lesser, M. A., Dandruff, Ibid., 70, 320 (1952). Levine, O. L., Your Hair and Your Health, Greenberg Co., New York, 1926, p. 44. Templeton, H. J., A study of dandruff and of the Pityrosporon of Malassez, Arch. Dermatol. and Syphilol., 14, 270 (1926). Mitsutsugu, O., and Abe-Tsutomu, Studies on the depilitation of scalp hair and scurf. 1st Rept.: Seasonal variation, J. Physiol. Soc. Japan, 24, 252 (1962). Spoor, H. J., Microbiological and clinical study of antidandruff agents, Proc. Sci. Sect. Toilet Goods Assoc., 23, 27 (May 1955). Spoor, H. J., Clinical evaluation of antidandruff formulations, J. Soc. Cosmetic Chemists, 14, 135 (1963).