[SNAKES]. -- SEVERINUS, Marcus Aurelius. Vipera pythia, id est, de viperae natura. Padua: Pauli Grambotti, 1650. 4o. Engraved title and engravings in text. Contemporary vellum (repaired). Provenance: Museum of French Art, NY (stamp on title and a few text leaves). FIRST EDITION of this work on snakes, including sections on venoms and antidotes. Nissen ZBI 3829; Osler 3961; Waller 8893. -- CHARAS, Moyse. Nouvelles experiences sur la vipere. Paris: For the Author, et all. 1672. 8o. Engraved title and 3 double-page plates. Contemporary calf. Second edition of this scarce work on snakes, first published in 1669. Wellcome II, p.327. (2)