St. Louis, Missouri Botanical Garden Press:

–Reproduces (fig. 65, p. 1038) watercolors of a dugong skull and mandible (lateral and anterior views), compared with those of a walrus, found in the Barton papers at the American Philosophical Society, Philadelphia. They are exact copies (by Cornelius Tiebout?) of the two views of the skull in Buffon & Daubenton (1765: pl. 56), said to be "the earliest illustration of the dugong skull."