disappeared in the great flood of barbaric invasions, underneath the whirlpool caused by the ruins of the Roman Empire, and later on, underneath the wreckage of that same Empire with its new centre in Constantinople. The invasions of barbarians, both from the East and the North, sweeping over the European continent, brought ignorance in the wake of barbaric conquest. The result was that night came down upon knowledge and thick darkness enveloped the lands which were to be the nursery of a new civilisation. When the Sun of science again began to rise upon the Western world, it presented itself in a form which was alien, nay, which was more than alien, which was hostile to the dominant religion of the time. It came from the children of Islâm. It came from those who recognised Muhammed as their Prophet. From the Muslim schools of Arabia came the first teachers of modern science to Europe. True, they were really by their intellectual ancestry descended from the thought of Greece. They drew their inspiration from the school of Plato through the Neo-Platonists; they reproduced the ideas of Porphyry and Ptolemy, and of other Grecian and Egyptian thinkers, Neo-Platonic and even Gnostic. But they threw over it the garb of Islâm, they presented it in the form of Arabic thought. The result of this was that, as it made its way into Spain in the wake of the conquering Moors, as it came with those who drove out of the Southern Peninsula the rule of the Spanish Christian monarchy, so the first aspect of science to Christians was an aspect of hostility. It came as an invading enemy and not as an illuminant to all. Hence conflict arose; some who were within the limits of the mighty Church of Rome, touched by a longing for the new learning, stretched out their hands to take the gifts that science was bringing. These men were regarded with suspicion, nay, with more than suspicion, with hatred that broke out in bitter persecution. Who can read the history of Roger Bacon, the wondrous monk; who can picture Copernicus on his death-bed as his immortal work is brought to him ere yet his eyes are closed, he having shrunk from earlier publication, lest the stake should be his portion; who can stand in the Field of Flowers in Rome, and see there the statue erected where he was burned to death, who dying in one century, lives for all centuries to come--Giordano Bruno; who can listen to Galileo, as with faltering lips he denies the truth he knows and utters the falsehood that he knows not; who can follow these martyr-steps, led on by bitter memories of blood and fire, without understanding the reason for the hostility of science to religion, without confessing with shame and sorrow that that hostility was caused and was justified by the cruelties wreaked by religion on science, when science was young and feeble? Every one of us who stands upon the side of religion should recognise that we are reaping the bitter harvest