Histoire naturelle, générale et particulière, des reptiles, A Paris, De l'Imprimerie de F. Dufart, an X-XI 1802-1803, anatomy, evolution, pictorial works, reptiles, amphibians, The illustration features two detailed depictions of frogs, labeled as '1. Rainette fémorale' and '2. Rainette squirrelli.' Each frog is shown from a top view, showcasing their distinct body shapes and patterns. The first frog, Rainette fémorale, displays elongated limbs and a more slender body, while the second, Rainette squirrelli, exhibits a stockier form with a wider stance. Both figures are rendered with intricate line work, emphasizing their anatomical features and unique textures, making this a valuable representation of amphibian diversity.