PLate 13.—Desquamation of back of scalp at 28 days. Epilation occurred earlier in desquamated area. Note ulceration of left ear. PLaTE 14.—Same case. Epilation back of head at 46 days. Note persistent ulceration of left ear. Case 79, age 41, M. PiaTE 15.—Same case as in Plate 14 showing complete regrowth of hair of normal colar and texture at six months after exposure. Ear lesion has healed with considerable scarring. See Plate 16. PiatTEe 16.—Ear lesion shown in Plate 15 magntfied 20 times. Note atrophy and scaling of scar tissue. Telangiectatic vessels can be seen in the upper part of the picture.