The date of the rise of the medical school at Montpellier is, as suggested by Puschmann, veiled in the obscurity of tradition. There seems to be no doubt that it goes back to as early as the tenth century, it was already famous in the eleventh, and it attracted students from all over Europe during the twelfth century. When Bishop Adalbert of Mainz came thither in 1137, the school possessed buildings of its own, as we learn from the words of a contemporary, Bishop Anselm of Havelberg. St. Bernard in a letter written in 1153 tells that the Archbishop of Lyons, being ill, repaired to Montpellier to be under the treatment of the physicians there. Perhaps the most interesting feature of this letter is the fact that the good Archbishop not only spent what money he had with him on physicians, but ran into debt. The two schools, Salerno and Montpellier, came to be mentioned by writers of the period as representing the twins of medical learning of the time. John of Salisbury, a writer of the early thirteenth century, declares that those who wished to devote themselves to medicine at this time went either to Salerno or Montpellier. Ægidius or Gilles de Corbeil, the well-known physician, and Hartmann von der Aue, the Meistersinger, both mention Salerno and Montpellier, usually in association, in their writings, and make it very clear that in the West at least the two names had come to be almost invariably connected as representing rival medical schools of about equal prominence. The reputation of Montpellier spread in Italy also, however, and we have the best evidence for this from an incident that took place in Rome at the beginning of the thirteenth century, which is more fully dwelt on in the chapter on Medieval Hospitals. Pope Innocent III. wanted to create a model hospital at Rome, and made inquiries as to who would be best fitted to organize such an institution. He was told of the work of Guy or Guido of Montpellier, who was a member of the Order of the Holy Ghost and had made a great hospital at Montpellier. Accordingly Guy was summoned to Rome, and the establishment of the Santo Spirito Hospital was entrusted to him. It was on the model of this that a great many hospitals were founded throughout the world, for Pope Innocent insisted that every diocese in Christianity should have a hospital, and Bishops who came on formal visits to the Holy See were asked to inspect the Santo Spirito for guidance in their own diocesan hospital establishments. Many of the hospitals throughout the world came as a result to be hospitals of the Holy Ghost and this contribution alone of Montpellier to the medical world of the time was of great significance and must have added much to her prestige. [Illustration: HOLY GHOST HOSPITAL (LÜBECK) _From "The Thirteenth: Greatest of Centuries," by J. J. Walsh_]