New experiments upon vipers :
New experiments upon vipers is a 1673 London natural-history treatise by Moyse Charas and Francesco Redi, printed for J. Martyn, on snake venom and its medical uses, aimed at physicians and scholars. Its engraved plates show dissected viper anatomy: fangs, venom glands, scale rows and skin texture drawn in fine parallel hatching, which a designer could take as a model for dense, precise linework and labelled diagrams.
