The image is a vintage scientific illustration of two flatfish, likely from a biological study. The background is a pale yellow, giving it an aged appearance. **Top Fish (labeled '3 c'):** This flatfish is depicted from a dorsal view. It has an oval, flattened body with a small, rounded head. The fish is a mottled brown color, with darker speckles and markings across its surface. The eye is visible on the left side of the body. The tail is rounded and slightly pointed. **Bottom Fish (labeled '3 d'):** This flatfish is also shown from a dorsal view, similar to the top one. It has a comparable shape and size, but its coloration is slightly different. It's a lighter shade of brown with more pronounced, irregular markings and speckles. The eye is visible on the left side of the body, and the tail is rounded. **Text:** At the top of the image, the text reads "ADJUSTMENT OF FLATFISHES" and "FRANCIS B. SUMNER" followed by "PLATE 6" on the right. At the bottom right corner, it says "V. Serino, del." The style of the illustration is detailed and realistic, typical of scientific illustrations from the late 19th or early 20th century. The overall impression is one of a scientific record or study of flatfish anatomy and coloration.