A Pharmaceutical Pope.
Peter of Spain, a native of Lisbon, was a physician who became Pope under the title of John XXI. He died in 1277. He wrote a treatise on medicine, or rather made a collection of formulas, including most of the absurd ones then current and adding a few of his own. One was to carry about a parchment on which were written the names of Gaspard, Balthasar, and Melchior, the three wise men of the East, as a sure preservative from epilepsy. Another was a method of curing a diarrhœa by filling a human bone with the excrements of a patient, and throwing it into a river. The diarrhœa would cease when the bone was emptied of its contents.