“…In about 400 reported cases there have been only 5 female patients. Judd and Hoerner (1935) found I female in a group of 52 patients, Ransom (1945) reported I female in a group of 18 patients, and there is I female in the 41 patients of the present series ; an exceptional sex incidence was reported by Rife (1938) whose 13 cases included 2 females. Age.-The ages of patients affected vary within wide limits, but the highest incidence is between 30 and 50 years of age.…”