Most prominent among the names which immortalize the golden age of Hebrew erudition is that of Moses-ben-Maimon, popularly known as Maimonides. A native of Cordova, and sprung from a family which had furnished many learned and distinguished members of the Jewish hierarchy, he enjoyed from his earliest youth the unrivalled educational advantages of the great Moslem capital. His mind was formed and his tastes developed under the most able instructors of the University of Cordova, and it has even been stated, upon disputed authority, however, that he was the pupil and friend of the famous philosopher Averroes. The profession of medicine which he adopted, and in which he afterwards so greatly excelled, he regarded rather as an instrument with which to observe the secret characteristics and incentives of human nature than as a means of livelihood. At the age of thirty, his reputation for prodigious erudition had spread far beyond the limits of the Moslem empire of the West. The fanatical policy of Abd-al-Mumen, founder of the Almohade dynasty, demanded the conversion of the Jews; thousands, under the fear of death, renounced their religion, and among them was Maimonides, whose resolution was not proof against the prospective sufferings of martyrdom. Escaping soon after to Egypt, where his renown had preceded his arrival, he became the friend and adviser of the Sultan. It is said that whenever he left his house he was compelled to pass through lines of people, some of whom desired his opinion on metaphysical questions, and others, who were afflicted with various ailments, that sought the aid of his medical knowledge. Such was his devotion to his profession, that in the care of his patients he deprived himself of sleep, and many times fainted from sheer exhaustion. In the midst of his arduous duties he found time for the composition of many voluminous treatises,--on biblical and rabbinical literature; on the action of remedies; on the duties and responsibilities of man as inculcated by the higher philosophy. His principal work, More-Hanebushim, “The Guide of Lost Spirits,” is one of the masterpieces of Hebrew literature. The learning it displays, the profound knowledge of mankind it reveals, the originality of its conceptions, the ingenuity and logical force of the argument, the sublime moral maxims it inculcates, and the elegance and beauty of the style, owing little to the native harshness of the idiom in which it is written, stamp it as one of the most remarkable productions of the human mind. The genius of this great writer regarded as diversions undertakings which would have appeared formidable tasks to men of inferior capacity. His medical works, fourteen in number, and especially his learned commentary on Hippocrates, were long the guide of the profession, and to this day many of his precepts for the treatment of disease are employed by the intelligent practitioner. He was one of the first to recognize that mental derangement is often the