THE DERMATOLOGIST LOOKS AT THE HAIR PROBLEM 139 mones," Tr. N.Y. Acad. Sc., 8, 101- 102 (Jan. 1946). 5. Fritsch, Gustav, "Die Menschliche Haupthaaranlage," Gerog Reimer, Ber- lin (1915). 6. Rothman, S., and Flesch, P., "Isolation of an Iron Pigment from Human Red Hair," Proc. Soc. Exper. Biol. & Med., 53, 134-135 (June, 1943). 7. Steggerda, M., "Change in Hair Color with Age," 5 t. Hered., 32, 402-403. 8. Nutritional Review, "Pantothenic Acid, the Adrenal Cortex and Gray Hair," 4, 84-85 (March 1946). 8a. Sabouraud, "Maladies du Cuir Che- velu," Massou et Cie, Paris, 1902, 1910, 1928, 1929, 1932. "Path. of Hair Follicles and of Hair," Bull. Soc. Franc. de Dermat. et Syph., 42, 868 (1935). 8b. Wright, C. S., Sarnitz, M. H., and Brown, N,, "Vitamin B6 (Pyridoxine) in Dermatology," Arch. Derm. Syph., 47, 651-653 (May, 1943). 9. Cotter, L. H., "Thioglycolic Acid Poi- soning in Connection with the Cold Wave Process, y.A.M.A. (June 15, 1946). 9a. Lewis, F., "Danger in the Use of Chem- ical Hair Straighteners," Ibid., 112, 36-37 (Jan., 1939). 10. Bagchi, K. N., and Ganguly, H. D., "Mineral Constituents of Human Hair," Amer. Biochem. & Exper. Med., 1, 83- 86 (1941). 11. Beveridge, J. M. R., and Lucas, C. C., "The Analysis of Hair Keratin," Bio- chem. jr., 38, 88-95 (1944). 12. Clay, R. C., Cook, K., and Routh, J. I., "Studies in the Composition of Human Hair," y. Amer. Chem. Soc., 62, 2709-2710 (Oct., 1940). 13. Bagchi, K. N, , Ganguly, H. D., and Sirdar, J. N.,' Lead-Content of Human Hair," Indian y. M. Research, 27, 777- 791 (1940).