eae Piate 17.—Epilation in 7 yr. old girl at 28 days. Case 72. Piats 18.—Same case as in Plate 17, siz months after exposure showing complete regrowth of normal hair. PuaTE 19.—Spotty epilation in boy, age 13, at 28 days. Case 26. Note scalp lesions in areas of epilation. PuatE 20.—Pigmented bands in semilunar area of fingernails at 77 days. (Same case as in Plates 9-12).