Kunstformen der Natur Leipzig und Wien, Verlag des Bibliographischen Instituts, 1899-1904. Natural history, pictorial works., This illustration showcases a variety of intricately designed microorganisms, specifically from the group Polycytararia. Each organism is depicted with precise detailing that highlights its unique shapes and structural features. The composition includes various forms such as star-like structures, spherical forms, and intricate branching designs, all embellished with patterns that emphasize their organic nature. The background is subtly colored, enhancing the visual impact of these fascinating life forms. The caption indicates that this is a study of microscopic entities, likely intended for scientific exploration and education.