Before the end of the eleventh century Pope Victor III., who had been the Abbot of Monte Cassino, was elected Pope much against his will. He occupied the Papal throne only for about a year and a half. He had been especially recommended by Pope Gregory VII., the famous Hildebrand, as a very suitable successor. Desiderius, as he was called before becoming Pope, was one of the best scholars of his time, and had taught for some years with great distinction at Salerno. It is not known absolutely that he taught medicine, but, as the university of Salerno is usually considered not to have been founded until the middle of the next century, and as before that time the main teaching faculty was that of the medical school and all other teaching was subordinated to it, Desiderius must surely be considered as a teacher at least of medical students. At that time a physician was expected to know something more than merely his {228} profession. Mathematics and philosophy were the two favorite subjects to which, besides medicine, they devoted themselves. The presence of the future Pope at Salerno is, moreover, the best possible index of the sympathy between the ecclesiastical authorities and the medical school. Besides there are definite records of the friendship which existed between Alphanus, Archbishop of Salerno, and Desiderius, while they were both members of the Benedictine Community of Monte Cassino. Alphanus subsequently taught medicine at Salerno, and some of his writings on medicine have been preserved for us. He was the author of a work bearing the title _De Quatuor Elementis Corporis Humani_, a treatise on the four elements of the human body, which is a compendium of most of the knowledge of anatomy and physiology of the time, though it also contains much more than the information with regard to the merely physical side of man's being. The fact that Alphanus should have been promoted from the professorship in the medical faculty to the Archbishopric of Salerno is only another proof of the entire sympathy which existed between the Church and the professors of medical science at that time.