The saving of deformed and ailing infants or children whose parents did not care to have the trouble of rearing them, required the establishment by the Christians of another set of institutions, Foundling Asylums and Hospitals for Children. Until the coming of Christianity parents were supposed to have the right of life and death over their children, and no one questioned it. In every country in the world until the coming of Christianity this had always been the case. Besides, there were institutions for the care of the old. These are the classes of mankind who are especially liable to suffer from disease, and the opportunity to study human ailments in such institutions could scarcely help but provide facilities for clinical observation such as had not existed before. Unfortunately the work of Christianity was hampered, first by the Roman persecutions, and then later by the invasion of the barbarians, who had to be educated and lifted up to a higher plane of civilization before they could be brought to appreciate the value of medical science, much less contribute to its development. Harnack, whose writings in the higher criticism of Scripture have attracted so much attention in recent years, began his career in the study of Christian antiquities with a monograph on Medical Features of Early Christianity.[1] He mentions altogether some sixteen physicians who reached distinction in the earliest days of Christianity. Some of these were priests, some of them bishops, as Theodotos of Laodicea; Eusebius, Bishop of Rome; Basilios, Bishop of Ancyra, and at least one, Hierakas, was the founder of a religious order. The first Christian physicians came mainly from Syria, as might be expected, for here the old Greek medical traditions were active. Among them must be enumerated Cosmas and Damian, physicians who were martyred in the persecution of Diocletian, and who have been chosen as the patrons of the medical profession. Justinian erected a famous church to them. It became the scene of pilgrimages. Organizations of various kinds since, as the College of St. Come, and medical societies, have been named after them.