EditorialGallina rota Helix, Snail species, Signed: W. Hartmann ad nat., pinx, C. Burkhardt Sculps, Printed by J. B. Scherrer, 76, after p. 227, Hartmann, Wilhelm (ad. nat. pinx.); Burkhardt, Kaspar (sc.); Scherrer, J. B. (imp.); Scheitlin & Zollikofer (ed.), 1...