Author(s): The Ray Society
v. 1. I. Geographico-botanical, and II. Structural and physiological memoirs.--v. 2. III. Systematic memoirs, and IV. Contributions to systematic works.
First edition copies - price is for both Volume I - 1866 and Volume II - 1867 - Very good condition for 150 yr old books, light blue boards with gold embossing. Clipped title page on both volumes.
More information at this link - Volume 1