Aristotle was not, as Plato was, properly a man of letters. Or, if he did bear this character, the evidence of it has perished. What we possess of his intellectual productions exhibits the author in the perfectly dry and colorless light of a man of science. Even in those treatises of his in which he comes nearest to the confines of pure and proper literature, his interest is rather scientific than literary. He discusses in two separate books the art of rhetoric and the art of poetry; but he conducts his discussion without enthusiasm, without imagination, in the severely strict spirit of the analyst and philosopher. The text of the two treatises now referred to survives in a state of great imperfection. Indeed, the same is the case generally with Aristotle’s works. Critics have even surmised that, in some instances, notes of lectures, taken by pupils while the master according to his wont was walking about and extemporizing discourse, have done duty in place of authentic autograph originals supplied by the hand of Aristotle himself. The title “Peripatetic” (walk-about), given to the Aristotelian philosophy, was suggested by the great teacher’s habit, thus alluded to, of doing his work as teacher under the stimulus of exercise on his feet in the open air. The non-literary character of Aristotle’s works has to a great extent excluded him from the course of Greek reading adopted by colleges—this, and moreover the fact that he occupies a position at the extreme hither limit, if not quite outside the extreme limit, of the Greek classic age. Still he is now and then read in college; and at any rate he is too redoubtable a name among those names which in their motions were “Full-welling fountain-heads of change,” not to be an interesting object of knowledge to the readers of THE CHAUTAUQUAN. The productions of Aristotle are numerous. The Alexandrian bibliography of him gives one hundred and forty-six titles of his works. Of the books thus catalogued not a vestige remains, except in an occasional quotation from them at the hands of some other ancient writer. The works commonly printed as Aristotle’s form an entirely different list. We give a few of the leading titles or subjects: “Organon,” a collective name for various writings that made up a system of logic; “Rhetoric,” “Po-etˈics” (art of poetry), “Ethics,” “Politics,” “Natural Philosophy,” “Biology,” “Metaphysics.” [This last word, which has acquired in modern use a very distinct meaning of its own, was originally a mere meaningless designation of certain investigations or discussions entered into by Aristotle _after_ his physical researches. The preposition _meta_ (after), and _physica_ (physics), give the etymology of the term.] The comprehensive or, as we before said, encyclopædic range of Aristotle’s intellectual activity will to the observant reader be sufficiently indicated by this list of titles.