228 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS ß :. vidual variability in fiber number, grouping and diameter is very great and no correla. tions of statistical significance were found for any of these characteristics. Nor were these characteristics related to age, at least within the age range studied. Deficiency in fiber number or even in diameter can be overcome by other characteristics to provide a hair mass with the visual impression of bulk and fullness. REFERENCES (1) (2) (3) (4) (5) (6) (7) (8) (9) (lO) (11) (12) (13) (14) (15) (16) (i7) (18) (19) (20) (21) (22) (23) (24) (25) P.S. Hough, J. E. Huey, and W. S. Tolgyesi, Hair body, J. Soc. Cosmet. Chem., 27,571 (1976) E. M. Cottington, A. Fookson, and W. S. Tolgyesi, Mechanics of hair combing, Presented at Fiber So- ciety Meeting, Atlanta, Georgia, May 5, 1975. P.M. Waldman and R. K. Brown, "Physiology of the skin and its appendages," in M. S. Balsam, and E. Sagarin, Eds., Cosmetics.' Science and Technology, 2nd ed., Wiley-Interscience, New York, 1974, p. 183. R.J. Harry, Harry's Cosmeticology, 6th ed., Chemical Publishing Co., Inc. New York, 1973, p. 341. N. Orentreich, "Scalp hair replacement in man," in W. Montagna and R. L. Dobson, Eds., Advances in Biology of the Skin, vol. IX, Hair Growth, Pergamon Press, Oxford, England, 1969, p. 99. '::: i!::•i.•i M. Bernstein and S. Robertson, Racial and sexual differences in hair weight, Amer. J. Phys. Anthropol.,.:i? I 10, 379-85 (1927). D. Hrdy, Quantitative hair form variation in seven populations, Amer. J. Phys. Anthropol., 39, 7-17 . ( 1973). '.?: M. Steggerda and H. Seibert, Size and shape of head hair from six racial groups, J. Heredity, 32, 315 18 (1941). D. Verna[l, A study of the size and shape of cross sections of hair from four races of men, Amer. J. Anthropol., 19, 345- 50 (1961). J. M. Barman, V. Pecoraro, and I. Astore, Metodologia, tecnica y computaciones en el estudio estado trofico del sistema piloso, Arch. Argent. Dermatol., 12, 55-64 (1962). , .? ß J. M. Barman, V. Pecoraro, and L. Astore, Method, technic and computations in the study of the:i:' trophic state of the human scalp hair, J. Invest. Dermatol., 42,421-25 (1964). V. Pecoraro et al., The normal trichogram in the child before the age of puberty, J. Invest. Dermatol??• 42,427- 30 (1964). J. M. Barman, I. Astore, and V. Pecoraro, The normal trichogram of the adult,J. Invest. Dermatol., 44,:• 233-36 (1965). Ibid. V. Pecoraro, J. M. Barman, and I. Astore, "The normal trichogram of pregnant women," in Montagna and R. L. Dobson, Eds., Advances in Biology of the Skin, vol IX, Hair Growth, Pergamon:'5.! Press, Oxford, England, 1969, Pp. 203-10. J. M. Barman, I. Astore, and V. Pecoraro, "The normal trichogram of people over 50 years but ap(:i•)i parently not bald," in W. Montagna and R. L. Dobson, Eds., Advances in Biology of the Skin, vol. IX,': • Hair Growth, Pergamon Press, Oxford, 1969, England, Pp. 211-20. G. Moretti et al., "Biochemical aspects of hair growth," in W. Montagna and R. L. Dobson, Eds., vances in Biology of the Skin, vol. IX, Hair Growth, Pergamon Press, Oxford, 1969, England, Pp. 5 3. A. Rook, Endocrine influences on hair growth, Brit. Med. J., 1,609-14 (1965). N. E. Yin, R. H. Kissinger, W. S. Tolgyesi, and E. M. Cottington, The effect of fiber diameter on cosmetic aspects of hair, J. Soc. Cosmet. Chem., 28, 139 (1977). H. Oberste-Lehn, and A. Nobis, Die haaranordnung beim menschen und bei einigen saugetieren, ß Anat. Entwicklungsgesch., 123,589 (1964). H. Oberste-Lehn, "Effects of aging on the papillary body of the hair follicles and on the eccrine sweat g.•' glands," in W. Montagna, Ed., Advances in Biology of the Skin, vol. VI, Aging, Pergamon Press, Oxford,?• England, 1965, Pp. 17-34. L. Giacometti, "The anatomy of the human scalp," in W. Montagna, Ed., Advances in Biology of the .. Skin, vol. VI, Aging, Pergamon Press, Oxford, England, 1965, Pp. 97-120. H. T. Behrman, The Scalp tn Health and Disease, C. V. Mosby Company, St. Louis, 1952, p. 32. F. Pinkus, Handbuch derHaut-u. Geschlechtsk, Vol. 1, Julius Springer, Berlin, 1929. A. F. Savill, The Hair and Scalp, 3rd ed., Williams and Wilkins Co., Baltimore, 1•945.

FEMALE SCALP 229 (26) F. W. Sunderman and F. Boerner, Normal Values in Clinical Medicine, W. B. Saunders Company, Philadelphia, 1950, Pp. 483-5. (27) A. G. Lyne, The development of hair follicles,Aust. J. Sci., 28, 370-7 (1966). (28) E. M. Perkins, A. A. Smith, and D. M. Ford, "A study of hair groupings in primates," in W. Montagna and R. L. Dobson, Eds., Advances tn Biology of the Skin, vol. IX, Hair Growth, Pergamon Press, Oxford, England, 1969, Pp. 357-67. (29) I. Sarkany and P.M. Gaylarde, A method for counting hairs, Brit. J. Dermatol., 79, 50-1 (1967). (30) L.J.A. Loewenthal, "Compound" and grouped hairs of the human scalp: their possible connection with follicular infections, J. Invest. Dermatol., 8, 263-73 (1947). H. Pinkus, "Embryology of hair," in W. Montagna and R. A. Ellis, Eds., The Biology of Hair Growth, Academic Press, Inc., New York, 1958, p. 28. (32) W. Montagna and E. J. Van Scott, The Anatomy of the Hair Follicle, in W. Montagna and R. A. Ellis, Eds., The Biology of Hair Growth, Academic Press, Inc., New York, 1958, Pp. 39-64.