His pupil Lanfranc equalled his master in devotion to practical surgery and surpassed him in his development of the great science of medicine. Pagel, the well-known German historian of medicine, says that, in his text-book Lanfranc has excellent chapters on the affections of the eyes, the ears and mouth, the nose, even the teeth, and treats of hernia in a very practical common-sense way. He warns against the radical operation and says, in words that come home to us with strange familiarity at the present time, that many surgeons decide on operations too easily, not for the sake of the patient but for the sake of the money that is in them. Lanfranc's discussion of cystotomy, Pagel characterizes as prudent but rational, for he considers that the operations should not be feared too much but not delayed too long. In patients suffering from the inconvenience which comes from large quantities of fluid in the abdomen he advises _paracentesis abdominis_, but warns against putting the patient in danger from such an operation without due consideration. Pagel says that Lanfranc must be considered as one of the greatest surgeons of the Middle Ages and the real establisher of the prestige of the French school of surgery which maintained its prominence down to the nineteenth century. Lanfranc had been invited to Paris to take the chair of surgery, because the authorities of the university wanted to add prestige to the medical school, which was not as well known as the school {134} of philosophy. The fame of William of Salicet had spread throughout academic Europe, and so Lanfranc was offered the chair at the University of Paris in order to carry his master's message there. The next in the succession of great teachers at Paris was Mondeville, who found less to do in an original way than his master Lanfranc and his protomaster William, but who accomplished much for surgery. All that he did was thrown into the shade by what was accomplished for succeeding generations by the next in the series, Guy de Chauliac, who studied for a time in Paris under Mondeville, though his early medical education was obtained at Montpellier, but had also had the advantage of spending a year in Italy at the various medical schools which were famous at that time. These two incidents, Lanfranc's invitation to Paris to be a teacher there from Italy more than a thousand miles away, and Guy de Chauliac's studies in all the important universities of Europe of the time before he took up his own work, illustrate better than any words of ours can the ardent enthusiasm for study, the thoroughgoing anticipation of our most modern methods in education. Mondeville, like Chauliac, had made very nearly the same round of the universities. It is a custom, not a chance incident, that we have to deal with here.