[Felix Marchand--a retrospect in occasion of the 50th anniversary of his day of death (author's transl)].

In consideration of an autobiographical study of Felix Marchand and of ideas presented by him in various publications his importance for the pathological anatomy and medicine was discussed. His talent of deducing from analytical observations for the detection of generally valid principles was remarkable. His contributions to the theory of inflammation and diseases, to the significance of general and experimental pathology as a basis of pathology, and his understanding for the nature of pathological state as a dynamic event when he is speaking about pathological processes are to emphasize. In our view, Felix Marchand represented besides Rudolf Virchow the most outstanding personality of German-speaking pathology.