For those who are particularly interested in medical history one of the sections of Henry's book has a special appeal, because he gives in it a sketch of the history of surgery. We are little likely to think, as a rule, that at this time, full two centuries before the close of the Middle Ages, men were interested enough in the doings of those who had gone before them to try to trace the history of the development of their specialty. It is characteristic of the way that the scholarly Mondeville views his own life work that he should have wanted to know something about his predecessors and teach others with regard to them. He begins with Galen, and as Galen divides the famous physicians of the world into three sects, the Methodists, the Empirics, and the Rationalists, so Mondeville divides modern surgery into three sects: first, that of the Salernitans, with Roger, Roland, and the Four Masters; second, that of William of Salicet and Lanfranc; and third, that of Hugo de Lucca and his brother Theodoric and their modern disciples. He states briefly the characteristics of these three sects. The first limited patients' diet, used no stimulants, dilated all wounds, and got union only after pus formation. The second allowed a liberal diet to weak patients, though not to the strong, but generally interfered with wounds too much. The third believed in a liberal diet, never dilated wounds, never inserted tents, and its members were extremely careful not to complicate wounds of the head by unwise interference. His critical discussion of the three schools is extremely interesting. Another phase of Mondeville's work that is sympathetic to the moderns is his discussion of the irregular practice of medicine and surgery as it existed in his time. Most of our modern medicine and surgery was anticipated in the olden time; but it may be said that all of the modes of the quack are as old as humanity. Galen's description of the travelling charlatan who settled down in his front yard, not knowing that it belonged to a physician, shows this very well. There were evidently as many of them and as many different kinds in Mondeville's time as in our own. In discussing the opposition that had arisen between physicians and surgeons in his time and their failure to realize that they were both members of a great profession, he enumerates the many different kinds of opponents that the medical profession had. There were "barbers, soothsayers, loan agents, falsifiers, alchemists, meretrices, midwives, old women, converted Jews, Saracens, and indeed most of those who, having wasted their substance foolishly, now proceed to make physicians or surgeons of themselves in order to make their living under the cloak of healing."