Desiring to study medicine, Guinterius went to Paris in 1525; he received the Bachelor’s degree in 1528, and the full medical title two years later. He passed a brilliant examination which won for him the commendation of the most eminent professors. Remaining in Paris, he engaged in practice and in teaching, and rapidly rose to eminence. In addition to conducting courses in anatomy, he translated into Latin the writings of the most noted Greek medical authors of antiquity—the books of Galen, of Oribasius, of Paul of Aegina, of Caelius Aurelianus, and of Alexander of Tralles—all of which were held in high esteem in the sixteenth century. His fame reached far beyond the boundaries of France. Christian III., the enlightened king of Denmark, who was noted for his love of literature, sought to attach him to the Danish court, but the honor was refused. Having become a convert to the religious views of Luther, Guinterius found that his life was in danger; he left Paris and resided for a time in Metz. He soon removed to Strassburg, where he was received with distinguished honors and was appointed to a professorship in the University. Owing to the activity of his enemies, his position became insecure; accordingly, he resigned his chair and spent a considerable time in travelling throughout Germany and Italy. In the year 1562, Ferdinand I., in appreciation of the great merits of Guinterius, raised him to the highest distinction by placing him among the nobles of the land; and thus the beggar of Deventer became a nobleman of Strassburg. His life ended October 4, 1574. Like Sylvius, Guinterius was a teacher of men who became greater than himself—Vesalius, Servetus and Rondelet sat upon his benches. Like Sylvius, he placed his faith in Galen and failed to grasp the great truth that anatomical science is based, not on the writings of the Fathers but on dissection of the dead body. Jean Fernel [Illustration: JEAN FERNEL] The third bright star of the Paris constellation was Jean Fernel (1485-1558), of Amiens, who was regarded as the ablest physiologist of his time and was physician-in-ordinary to Henry the Second. Fernel dipped deeply into philosophy, geometry and mathematics. Before entering the medical profession he issued three books on mathematic and geometric subjects. He received the medical degree in 1530, but continued his study of mathematics with such ardor that he was almost ruined financially. On the advice of his friends he entered upon the practice of medicine in Paris and met with remarkable success. He was skilled in anatomy and surgery and accompanied his sovereign upon numerous military expeditions. His medical writings are contained in many volumes and concern a variety of subjects, such as physiology, therapeutics, surgery, pathology, the treatment of fevers and the venereal diseases.