I have been at some pains, then, to try to find out just what were the conditions in Europe with regard to the practice of medicine by the Jews. There is no doubt that at Salerno, where the influence of the Benedictines was very strong and where the influence of the Popes and the ecclesiastical authorities was always dominant, full liberty of studying and teaching was from the earliest days allowed to the Jews. Down at Montpellier it seems clear that Jewish physicians had a large part in the foundation of the medical school, and continued for several centuries to be most important factors in the maintenance of its reputation and the upbuilding of that fame which draw students from even distant parts of Europe to this medical school of the south of France. During the ninth, tenth, eleventh, and twelfth centuries Jewish physicians were frequently in attendance on kings and the higher nobility, on bishops and archbishops, cardinals, and even Popes. Every now and then the spirit of intolerance among the populace was aroused, and occasionally the death of some distinguished patient while in a Jewish physician's hands was made the occasion for persecution. We must not forget, after all, that even as late as Elizabeth's time, when Shakespeare wrote "The Merchant of Venice," he was taking advantage of the popular sentiment aroused by the execution of Lopez, the Queen's physician, for a real or supposed participation in a plot against her Majesty's life. Shylock was presented the next season for the sake of adventitious popularity that would thus accrue to the piece. The character was played so as to depict all the worst traits of the Jew, and was scornfully laughed at at every representation. This is an index of the popular feeling of the time. Bitter intolerance of the Jew has continued. Down almost to our own time the Ghettos have existed in Europe, and popular tumults against them continue to occur. Quite needless to say, these do not depend on Christianity, but on defective human nature. During the Middle Ages the best possible criterion of the attitude of the Church authorities towards the Jews is to be found in the legislation of Pope Innocent III. He is the greatest of the Popes of the Middle Ages; he shaped the policy of the Church more than any other; his influence was felt for many generations after his own time. His famous edict with regard to them was well known: "Let no Christian by violence compel them to come dissenting or unwilling to Baptism. Further, let no Christian venture maliciously to harm their persons without a judgment of the civil power or to carry off their property or change their good customs which they have hitherto in that district which they inhabit." Innocent himself and several of his predecessors and successors are known to have had Jewish physicians. Example speaks even louder than precept, and the example of such men must have been a wonderful advertisement for the Jewish physicians of the time.