Exploration scientifique de l'Algérie pendant les années 1840, 1841, 1842. Paris, Imprimerie royale, 1844-1867. Algeria, Animals, Natural history, Scientific expeditions, Museum of Comparative Zoology, The artwork features two distinct species of newts in a taxonomic study, displayed side by side for comparison. The left newt showcases vibrant hues of brown and orange with intricate patterns along its body, while the right newt exhibits a striking green coloration with subtle detailing. Surrounding these central figures are various illustrative studies of limbs and other anatomical features, highlighting the diversity and complexity of these amphibians. The overall composition emphasizes the scientific exploration of newt morphology, providing insight into their classification and biological characteristics.