This clinical study concerns itself with a consideration of the dermatoses observed in various renal diseases, particularly those encountered in the nonsurgical diseases of the kidney. Eleven hundred histories, including approximately 250 postmortem reports, were studied, the records going back over a period of about fifteen years. As we shall discuss the skin diseases in nephritis in accordance with the nomenclature of Volhard and Fahr,1 it is desirable in presenting the subject to translate the old classification in terms of the new. The classification of Volhard and Fahr is abridged for our particular purpose : CLASSIFICATION OF DERMATOSES OBSERVED IN NEPHRITIS Of the total number of records studied, 340 cases, or 30 per cent, exhibited one or another skin disease. These may conveniently be divided into the following three groups: A. Dermatoses regarded as bearing a direct relationship to kidney diseases and their complications:2 1. Purpura 2.