Black and white diagram engraving of species and parts of whales. Depicted are: (1) a sperm whale's upper jaw and other parts of the head; (2) lower jaw of a sperm whale. Lettered with captions and "1. Machoire sup̩rierere et autres parties de la tete d'un Cachalot Macroc̩phale. 2.Machoire inferieure d'un Cachalot Macroc̩phale. Pl. II. Page 167."
