In presenting this important subject I shall endeavor to be as concise as possible, speaking from the standpoint of the radiologist rather than that of the dermatologist. I will strive to demonstrate two distinct methods of treatment, each applicable to a certain condition of the disease and not to another. Inability to effect a cure when the one method, which for certain forms of the disease would be correct, is used on another form is, I believe, the cause of some reported failures.
Freund reported cases treated in 1897 with success, and in 1900 P. M. Jones, of California, reported very fully his work along this line. Thus we see the length of time the x-ray has been used in this disease is considerable, and it should have been placed on an established technic. The diagnosis in my cases rested on microscopic findings in more than half the cases, and