pThe following Translation of Aristotle's History of Animals has been made from the text of Schneider. In a work of considerable difficulty it is hardly possible entirely to avoid errors but it is hoped that those which have escaped are neither numerous nor important. The notes of Schneider have been consulted throughout and in places of difficulty the English translation by Taylor, the French of Camus, and the German of Strack, have been severally referred to.ppThe work itself is the most ancient and celebrated contribution to science which has come down to us and it is hardly possible, when we consider the means of observation which were accessible at the time, to imagine a work of more accurate observation. From the numerous quotations in which our author avails himself of the experience of his predecessors in the same field, as well as corrects their errors, there can be no doubt that Aristotle had the advantage of many works which have perished in the lapse of ages. In the Appendi