In the second chapter of this text-book, the first containing the definition of surgery and general introduction, Lanfranc describes the qualities that in his opinion a surgeon should possess. He says, "It is necessary that a surgeon should have a temperate and moderate disposition. That he should have well-formed hands, long slender fingers, a strong body, not inclined to tremble and with all his members trained to the capable fulfilment of the wishes of his mind. He should be of deep intelligence and of a simple, humble, brave, but not audacious disposition. He should be well grounded in natural science, and should know not only medicine but every part of philosophy; should know logic well, so as to be able to understand what is written, to talk properly, and to support what he has to say by good reasons." He suggests that it would be well for the surgeon to have spent some time teaching grammar and dialectics and rhetoric, especially if he is to teach others in surgery, for this practice will add greatly to his teaching power. Some of his expressions might well be repeated to young surgeons in the modern time. "The surgeon should not love difficult cases and should not allow himself to be tempted to undertake those that are desperate. He should help the poor as far as he can, but he should not hesitate to ask for good fees from the rich." Many generations since Lanfranc's time have used the word nerves for tendons. Lanfranc, however, made no such mistake. He says that the wounds of nerves, since the nerve is an instrument of sense and motion, are, on account of the greater sensitiveness which these structures possess, likely to involve much pain. Wounds along the length of the nerves are less dangerous than those across them. When a nerve is completely divided by a cross wound Lanfranc is of the opinion, though Theodoric and some others are opposed to it, that the nerve ends should be stitched together. He says that this suture insures the redintegration of the nerve much better. After this operation the restoration of the usefulness of the member is more complete and assured. His description of the treatment of the bite of a rabid dog is interesting. A large cupping glass should be applied over the wound so as to draw out as much blood as possible. After this the wound should be dilated and thoroughly cauterized to its depths with a hot iron. It should then be covered with various substances that were supposed to draw, in order as far as possible to remove the poison. His description of how one may recognize a rabid animal is rather striking in the light of our present knowledge, for he seems to have realized that the main diagnostic element is a change in the disposition of the animal, but above all a definite tendency to lack playfulness. Lanfranc had seen a number of cases of true rabies, and describes and suggests treatment for them, though evidently without very much confidence in the success of the treatment.