Part 1 has separate t.-p., with imprint date 1834; it appears to be a second edition of that part, differing slightly from the other edition in typography, arrangement, etc., and accompanied by an appendix entitled: Observations on the geology of York County, Pennsylvania, by Thos. G. Clemson, read October 29, 1834. (13 p.)
Lists of members are included (p. [vii]-ix; p. 177-179)