For your consideration: a handbill (Case FRC 27552) describing the medical training and expertise of physician Antoine-François Maillet.
Dr. Maillet lists a copious repertoire of maladies he is capable of treating and, at the end, invites prospective patients to send him urine samples for diagnosis. It would seem he was peripatetic (or perhaps just prudent), since the printed text leaves his domicile blank. In the Newberry’s copy, “Il est logé chez” is completed in manuscript with “Bonnet a Riom”– presumably Saint-Bonnet-près-Riom.
Uroscopy, a diagnostic method practiced since antiquity, was still in use at the turn of the 20th century, as this doctor’s test case shows. For every 500 pamphlets in FRC with the Library of Congress Subject Heading of, say, “Taxation–France–Early Works to 1800,” there will be one with completely novel subject matter. This pamphlet was the first “Urine–Diagnostic use–France–Early works to 1800 ” that I’ve come across in two years. It is rivaled in novelty only, perhaps, by the subject heading “Uterus–Religious aspects–Drama–Early works to 1800 ” that came up for two oratorios in the Howard Mayer Brown Libretto Collection.