From the PREFACE. There is a pretty general agreement among those who have devoted any attention to Logic, that the Logical works of Aristotle would repay the labour of a perusal. In spite, however, of this opinion, it does not appear that the pages of the Organon are often turned over by very diligent hands. Nor is this very difficult to be accounted for, if we consider their obscurity--a quality, indeed, which they share with most of Aristotle's productions. It was to facilitate the study of the original that this translation of a portion of it was undertaken: and the Posterior Analytics was the portion selected, both because it is intrinsically the most valuable, as affording the greatest insight into Aristotle's views, and bringing him on to the same ground with modern writers on the Philosophy of Science; and because the remaining parts are already tolerably well known through the works of the Scholastic logicians, while this, though far more interesting to a student of the Baconian Logic, has been comparatively neglected. In the Introduction a sketch has been given of the whole of the Organon.