This great work accomplished, he desired to be occupied only by his profession. For a time, his services were diverted from this channel, by his being elected a member of the convention of Pennsylvania to take into consideration the adoption of the federal constitution. Having examined the arguments as they progressed in the national convention that formed it, he was fully prepared to enter warmly and fully into the advocacy of that instrument. When it received the sanction of a majority of the States, the measure of the political ambition of Dr. Rush was filled. He retired from that kind of public life, crowned with laurels of immortal fame, that will bloom and survive, until patriotism shall be lost in anarchy, and the last vestige of liberty is destroyed by the tornado of faction. The only station he ever consented to fill under government subsequently was that of cashier of the United States Mint. From that period forward, he devoted his time and talents to the business of his profession, to the improvement of medical science, and the melioration of the ills that flesh is heir to. In 1789, he was elected professor of the theory and practice of physic, as the successor of Dr. Morgan, and in 1791 he was appointed to the professorship of the institutes of medicine and clinical practice, and upon the resignation of Dr. Kuhn, in 1806, he was honoured by the united professorships of the theory and practice of physic and of clinical medicine, which stations he ably filled until death closed his useful career. Besides those already mentioned he performed many duties in various associations formed for benevolent purposes. He was president of the American Society for the Abolition of Slavery, vice president of the Philadelphia Bible Society, president of the Philadelphia Medical Society, one of the vice presidents of the American Philosophical Society, and a member of several other philanthropic institutions both in this country and in Europe. For many years he was one of the physicians of the Pennsylvania Hospital, and took a deep interest in its prosperity and welfare. Wherever he could be useful by counsel, influence, or action, he was sure to be found. To soothe the troubled bosom heaving with anguish, to alleviate the suffering patient writhing under pain, to supply the pinching wants of the poor and needy sinking under adversity, afforded Dr. Rush more pleasure than to have been placed on the loftiest pinnacle of political fame; a richer joy than to have been the triumphant chieftain of a conquered world.