Title A dissertation on the nature and extent of the jurisdiction of the courts of the United States [microform] : being a valedictory address delivered to the students of the Law academy of Philadelphia ... on the 22d April, 1824 / By Peter S. Du Ponceau. To which are added, A brief sketch of the national judiciary powers exercised in the United States prior to the adoption of the present federal Constitution, by Thomas Sergeant, and the author's discourse on legal education, delivered at the opening of the Law academy, in February, 1821 ; with an appendix and notes.