It is sometimes the custom to say that this surgery was derived from the Arabs. This is supposed to rob the mediaeval universities of any prestige that may come to them for this marvellous progress. Gurlt, however, in his "History of Surgery," in his sketch of Roger (Ruggiero), who was the first of the great surgeons of the thirteenth century, who taught at the Italian universities, says: "Though Arabian writings on surgery had been brought over to Italy by Constantine Africanus 100 years before Roger's time, these exercised no influence over Italian surgery in the next century, and there is not a trace of the influence of the Arabs to be found in Roger's work." When Gurlt says this it is because he has deliberately studied the question, and we can be absolutely sure, therefore, that whatever we find in surgery at this time comes to us from these great mediaeval universities themselves, and is not imported from abroad. After Roger, who was at Bologna for a time after having been in Paris, and who then became a Papal physician, there are a series of great names that deserve to be mentioned. Four names are connected together by association as master and pupil for what may be termed four generations of surgical progress. From the birth {132} of the first to the death of the last represents about 100 years. That 100 years is a gloriously fruitful century in the history of surgery. The first of the group is William of Salicet, of whom Professor Clifford Allbutt, the Regius Professor of Physic at the University of Cambridge, in his address on the "Historical Relations of Medicine and Surgery to the End of the Sixteenth Century," delivered by special invitation at the Congress of Arts and Sciences at the World's Fair in St. Louis in 1904, has the highest praise. Allbutt says: "Like Lanfranc and the other great surgeons of the Italian tradition, and unlike Franco and Paré, William had the advantage of the liberal university education of Italy; but like Paré and Wurtz, he had a large practical experience in hospitals and on the battlefield and fully recognized that surgery cannot be learned from books only." Allbutt praises him and rightly for his careful notes of cases and then tells us something of his accomplishments in surgery. He says: "William discovered that dropsy may be due to a _durities renum_ six centuries before Bright; he substituted the knife for the Arabist abuse of the cautery; _he investigated the causes of the failure of healing by first intention_ (Italics ours), he described the danger of wounds of the neck; he sutured divided nerves; he forwarded the diagnosis of suppurative diseases of the hip; and he referred chancre and phagedaena to their proper causes." {133}