advance beyond the ancient master. The parrot-like repeaters of Galen gave battle at once. After the manner of their time their first missiles were epithets; and, the vast arsenal of these having been exhausted, they began to use sharper weapons--weapons theologic. In this case there were especial reasons why the theological authorities felt called upon to intervene. First, there was the old idea prevailing in the Church that the dissection of the human body is forbidden to Christians: this was used with great force against Vesalius, but he at first gained a temporary victory; for, a conference of divines having been asked to decide whether dissection of the human body is sacrilege, gave a decision in the negative. The reason was simple: the great Emperor Charles V had made Vesalius his physician and could not spare him; but, on the accession of Philip II to the throne of Spain and the Netherlands, the whole scene changed. Vesalius now complained that in Spain he could not obtain even a human skull for his anatomical investigations: the medical and theological reactionists had their way, and to all appearance they have, as a rule, had it in Spain ever since. As late as the last years of the eighteenth century an observant English traveller found that there were no dissections before medical classes in the Spanish universities, and that the doctrine of the circulation of the blood was still denied, more than a century and a half after Sarpi and Harvey had proved it. Another theological idea barred the path of Vesalius. Throughout the Middle Ages it was believed that there exists in man a bone imponderable, incorruptible, incombustible--the necessary nucleus of the resurrection body. Belief in a resurrection of the physical body, despite St. Paul's Epistle to the Corinthians, had been incorporated