Scope and Contents Introductory statement: "In becoming a member of the Academy of Natural Sciences of Philadelphia, I promise to conform myself to its constitution, laws and regulations, and in testimony of this declaraction, I do hereunto subscribe my name." The first page is signed by Wm. Maclure, Zaccheus Collins, George Ord, Reuben Haines, Edward Barton, John Barnes, Thomas Say, LeSueur, Isaiah Lukens, T. Peale, Jacob Peirce, J. Gilliams, and Benjamin Say. The first 51 pages have no dates or code...