Traité des maladies cutanées des pieds, telles que cors, oignon, durillons, verrues, ongles, etc.

Probably the first book specifically on the skin diseases of the feet, including the functions and nature of the skin of the feet and the manner in which perspiration takes place in the feet. Nothing is known regarding the author; even his first name is unknown. He may have been an army surgeon as he pays particular attention to the feet of soldiers.  Digital facsimile of the 1845 second edition from the Internet Archive at this link.