Abstract
Introduction The literature is full of examples of almost identical papers appearing almost simultaneously in journals of widely separate countries. The easy interchange of ideas afforded by modern air travel may be a possible reason, but I think the true reason is a logical development of thought becoming canalized into certain well-defined channels by the development of the accessory aids which are our necessary instruments. Although a good deal of what I am about to say has gradually arisen in my own practice, modified and revised by personal contacts with my immediate colleagues, most of it is quite familiar to all of you, and I claim almost nothing of originality in the sense of unique discovery. General Problems of Cancer Treatment Excision and Irradiation.—The treatment of a malignant growth is a choice between excision or irradiation—sometimes a judicious combination of the two. Nobody can pretend that this is a