A third of these greater writers on medicine in the early Middle Ages was Paul of Ægina--Æginetus as he is sometimes known. There has been some question as to his date in history, but as he quotes Alexander of Tralles there seems to be no doubt now that his career must be placed in the first half of the seventh century. We shall see more of him, as also of his great contemporaries and predecessors of the early Middle Ages, Aëtios and Alexander of Tralles, in a subsequent chapter. Besides these men who were known for their writings, a series of less known Christian physicians were praised by their contemporaries for their knowledge of medicine. Among them are particularly to be noted certain members of an Arabian family with the title Bachtischua, a name which is derived from the Arabic words _Bocht Jesu_--that is, servant of Jesus--who, having studied among the Greek Christians in the cities of Asia Minor, were called to the Court of Haroun al-Raschid and introduced Greek medicine to the Mohammedans. I have pointed out in my volume "Old-Time Makers of Medicine"[1] that "it was their teaching which aroused Moslem scholars from the apathy that characterized the attitude of the Arabian people towards science at the beginning of Mohammedanism." After this preliminary period of early medieval medical development, the next important phase of medicine and surgery in the Middle Ages developed in the southern part of Italy at Salerno. Here came the real awakening from that inattention to intellectual interests which characterized Italy after the invasion of the northern barbarians. The reason for the early Renaissance in this neighbourhood is not far to seek. In the older times Sicily had been a Greek colony, and the southern portion of Italy had been settled by Greeks and came to be known as Magna Græcia. The Greek language continued to be spoken in many parts even during the earlier medieval centuries, and Greek never became the utterly unknown tongue it was in Northern Italy. With the turning of attention to education in the later Middle Ages, the Southern Italians were brought almost at once in contact with Greek sources, and the earlier Renaissance began. With this in mind, it is comparatively easy to understand the efflorescence of culture in Southern Italy, and the development of the important University of Salerno and its great accomplishment, particularly in scientific matters, though all this came almost entirely as a consequence of the opportunity for Greek influence to have its effect there.