This is a vintage illustration of a feather, likely from an ornithological or scientific publication. The feather is depicted in a detailed, almost diagrammatic style, with each barbule meticulously rendered. The feather is large and elongated, with a distinct color pattern. The upper portion is a pale, almost white, color, densely covered with small, overlapping feather barbs. The lower portion is a vibrant orange-red, also densely covered with feather barbs. There's a clear demarcation between the two colors, creating a striking contrast. At the top of the feather, there's a small, separate illustration of what appears to be the feather's calamus (the hollow, quill-like base). The feather is labeled with letters 'a', 'b', and 'c' pointing to different parts of the structure. The background is filled with diagonal lines, creating a textured effect. The illustration is done in a black and white engraving style, with fine lines and shading to create depth and detail. The bottom of the image features the names 'M.G. Bodmer. del.' and 'A.F.L. de la Roche. inv.' indicating the artist and inventor of the illustration. The title 'TAB. XIII.' is at the top of the image.