Herrn de la Cepede's Naturgeschichte der Amphibien, oder der einzelnen vierfüßigen Thiere und der Schlangen, Weimar, Verlage des Industrie-Comptoir's,1800-1802. Amphibians, reptiles, The illustration features two distinct species of frogs positioned side by side. On the left, a frog displays intricate patterns with a combination of browns and yellows, showcasing its mottled skin and prominent limbs. To the right, another frog presents a vibrant green coloration with striking black markings, highlighting its smooth texture and unique shape. Both creatures are depicted with detailed anatomical features, providing a clear view of their eyes, limbs, and body contours. Accompanying the frogs are labeled figures that indicate their respective classifications, enhancing the educational aspect of the illustration. The background displays subtle lines that suggest a natural habitat, emphasizing the frogs' environmental context.