The philosophy in which Farabi was initiated sprung from the school of Merv; and perhaps its members had given greater attention to metaphysical questions than the men of Harran and Basra with their marked leaning to Natural Philosophy. From Bagdad, where he had long lived and worked, he went to Haleb (Aleppo), in consequence doubtless of political disturbances, and there he settled at the brilliant court of Saif-addaula; but he must have spent his closing years not at court but in retirement. He died at Damascus, while on a journey, in December, 950; and it is reported that his prince, attired as a Sufi, pronounced over him his funeral oration. We are told that he was eighty years of age, and it is otherwise probable that he was a very old man. His contemporary, and partner in study, Abu Bishr Matta died ten years before him, and his pupil Abu Zakariya Yakhya ibn Adi in the year 971, at the age of eighty-one. 3. The chronological order of the works of Farabi has not been determined. Shorter treatises in which he comes into touch with the Dialecticians and Natural-Philosophers, if these are at all genuine in the form handed down to us, may have been popular or juvenile productions of his; but his mature powers were applied to the study of Aristotle’s writings, for which reason the name given him by the East was ‘the Second Teacher’, that is, ‘the Second Aristotle’. Since his day the number and order of the works composed by Aristotle or at least attributed to him, which have been paraphrased and commented on after Farabi’s example, remain upon the whole fixed. First come the eight Logical treatises, viz., the Categories; the Hermeneutics; the First Analytics; the Second Analytics; the Topics; the Sophistics; Rhetoric; and the Poetics: It is to these that the Isagoge of Porphyry is the introduction. Then follow the eight treatises which deal with Physical subjects, viz., Auscultatio Physica; De Coelo et Mundo; De Generatione et Corruptione; the Meteorology; the Psychology; De Sensu et Sensato; the Book of Plants; and the Book of Animals. Lastly come the Metaphysics, the Ethics, the Politics and so on.