Histoire Naturelle, Fig. 1 et 2. Oursins Fig. 3, 4 et 5. Plumes de Mer.

Copper engraving, finely colored by hand, in excellent condition.

Taken from Histoire Naturelle, Coquilles Fossiles, appendix of Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, by Diderot and D'Alambert. This work is a great encyclopedia, published in the XVIII century, in French, by a large group of intellectuals under the direction of Diderot and D'Alembert.