Read in the Section on Practice of Medicine and Materia Medica, of American Medical Association, May, 1884. Under the name Dermatitis Herpetiformis I propose pose to place a number of cases of skin disease that I have encountered from time to time. These cases at present are for the most part nameless, having been regarded and diagnosed, either as peculiar manifestations of one or another of the commoner and well-known diseases, as eczema, herpes, or pemphigus, or, in some cases, as undescribed diseases. From these remarks it will be inferred that the disease is rare, and such in a measure is the fact. At the same time I have met with a sufficient number of cases during the last fifteen years, to warrant the view that the disease is worthy of a special description and a name. I first recognized the affection as being peculiar as far back as 1871,