Rhazes writes of aqua vitæ, but it is now accepted that he only means a kind of wine. The distillation of wine was not practised till a century after him. Mercury in the form of ointment and corrosive sublimate were applied by him externally, the latter for itch; yellow and red arsenic and sulphates of iron and copper were also among his external remedies. Borax (which he called tenker), saltpetre, red coral, various precious stones, and oil of ants, are included among the internal remedies which he advises. [Illustration: AVICENNA. As represented on the diploma of the Pharmaceutical Society.] The Arab author who acquired by far the greatest fame in Western lands, and who, indeed, shared with Galen the unquestioning obedience of myriads of medical practitioners throughout Europe until Paracelsus shook his authority five hundred years after his death, was Al-Hussein-Abou-Ali-Ben-Abdallah-Ebn-Sina, which picturesque name loses its Eastern atmosphere in the transmutation of its two concluding phrases into Avicenna. This famous man was born at Bokhara in 980; at twelve years of age he knew the Koran by heart; at sixteen he was a skilful physician; at eighteen he operated on the Caliph Nuhh with such brilliant success that his fame was established. In the course of a varied life he was at one time a Vizier, and soon afterwards in prison for being concerned in some sedition. He escaped from prison and lived for a long time concealed in the house of a friendly apothecary, where he wrote a large part of his voluminous “Canon.” He spent the later years of his life at Ispahan, where he was in great favour with the Caliph Ola-Oddaula, and he died at Hamdan in 1038 in the fifty-eighth year of his age. He had led an irregular life, and it was said of him that all his philosophy failed to make him moral, and all his knowledge of medicine left him unable to take care of his own health.