In one of the Leechbooks translated by Mr. Cockayne is found a letter on medicines from Helias, Patriarch of Jerusalem, to King Alfred the Great. Mr. Cockayne believes it to be authentic. There was a patriarch of that name at Jerusalem contemporary with Alfred, and the medicines he recommends are such as were obtainable in the Syrian drug shops at that date. It is to be presumed that the information was given in reply to a request for some recipes from the king. Helias recommends scammony, ammoniacum, gum dragon, aloes, galbanum, balsam, petroleum, triacle, and alabaster. Of petroleum he writes:-- “It is good to drink simple for inward tenderness, and to smear on outwardly on a winter’s day, since it hath very much heat; hence one shall drink it in winter; and it is good if for anyone his speech faileth, then let him take it; and make the mark of Christ under his tongue, and swallow a little of it. Also if a man become out of his wits, then let him take part of it, and make Christ’s mark on every limb, except the cross on the forehead, that shall be of balsam, and the other on the top of his head.” The patriarch had strong faith in Theriaca, and the directions he gives for its administration are minute, and would be explicit if he had only explained how much he meant by “a little bit.” “Theriaca,” he says, “is a good drink for all inward tenderness, and the man who so behaves himself as is here said, he may much help himself. On the day on which he will drink Triacle he shall fast until midday, and not let wind blow on him that day; then let him go to the bath, let him sit there till he sweat; then let him take a cup, put a little warm water in it, then let him take a little bit of the triacle, and mingle with the water, and drain through some thin raiment, then drink it, and let him then go to his bed and wrap himself up warm, and so lie till he sweat well; then let him arise and sit up and clothe himself, and then take his meat at noon (three hours after midday), and protect himself earnestly against the wind that day; then I believe to God it will help the man much.” EARLY ENGLISH MEDICAL PRACTICE. In the thirteenth century Roger Bacon, the great man of science, wrote on medicine, alchemy, magic, and astrology, as well as most other sciences. He believed that a universal remedy was attainable, and urged Pope Clement IV to give his powerful aid to its discovery. Nothing particular remains of his medical studies.