SummaryPresentation of six clinico-pathologic cases of bacterial endocarditis with secondary uremia. Description of the several lesions amongst which th'j most frequent are the focal glomerulonephritis, probably immunological, and the embolic lesions. Difficulties in diagnosis are stressed, they result from the changing aspect of the disease, the predominance of the renal manifestations and the modifications of certain signs of the endocarditis by uremia.