As this paper is based on observations of only five cases of erythema induratum treated with the Kromayer lamp, it seems quite unnecessary to review the literature of the disease or to compare this method of treatment with the results obtained from various other methods of treatment. Neither do I intend to review the literature of the treatment of disease with ultraviolet light in general, for I have found no reports of cases in which the light was used in exactly the same manner in which it was used in this group of cases. General exposure of the body to ultraviolet light, or general exposure of the legs, may prove valuable, but as this paper deals with the effects of the local application of the Kromayer lamp on the individual indurated areas of erythema induratum, the methods are not comparable.
At the outset let me state that I am referring