An account of the sugar maple-tree, of the United States, and of the methods of obtaining sugar from it, together with observations Upon The Advantages Both Public And Private Of This Sugar, in a letter to Thomas Jefferson, Esq. Secretary of State of the United States, and one of the Vice-Presidents of the American Philosophical Society. Read in the American Philosophical Society, on the 19th of August, 1791, and extracted from the Third Volume of their Transactions now in the Press. By Benjamin Rush, M. D. Professor of the Institutes and of Clinical Medicine in the University of Pennsylvania.

Date:

M,DCC,XCII. [1792]