The best, most easily obtainable, and most impressive data for the inductive method of reaching the truth as regards the relation of the Popes to medical science and (because of the fact that physicians were the scientists _par excellence_ of the Middle Ages) to all science, will be found in a brief consideration of the lives of the men who occupied the position of Papal Physician during the last seven centuries. I do not think that this group of men has ever been treated together before; at least I have been unable to find any work on the subject. While I am able to present a considerable amount of interesting material in brief form with regard to them, I am sure that there are many of them whom I have omitted. Practically up to the day of going to press I have been finding new references that led to further precious information with regard to this most wonderful group of men in medical history. It will be well {203} understood, then, that impressive as the consideration of the work and character of the men whose names I have found must be, this does not represent all the truth in the matter, but can be supplemented without much difficulty from other sources. If the Popes had been interested only in the miraculous healing of disease, and had wished to teach the lesson that men should depend solely for their recovery from serious symptoms and ailments of all kinds on prayers and relics and pilgrimages, then they would either have had no physicians at all in regular attendance on them, or at least their physicians would not have been selected from among the men who were doing most to advance the cause of practical and scientific medicine and of medical education. The very opposite of this is the case. The Papal physicians were as a rule the most scientific medical men of their time. This is not a pious exaggeration, but is literally true for seven centuries of history, as we shall see presently. The wonder of it is that there were not some charlatans among them. The physicians whom educated people select are not, as physicians we'll know, always worthy examples of progressive medical men. Literary folk particularly seem to have a distinct tendency to want to be different from other people, and their physicians are often the veriest theorizers. A medical friend who occasionally quotes, but perverts the old line, "the people people have for friends are often very queer," says, half in jest of course, but alas! more than half in earnest, that "the people literary folk and the clergy have for doctors are the queerest ducks (docs.) of all."