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.