Contained in this volume are books by Aristotle on the subject of logic or as the author would describe it, analytics. "Categories, On Interpretation, and On Sophistical Refutations" are collected here in this volume translated by E. M. Edghill and W. A. Pickard-Cambridge. This volume together with "Prior Analytics and Posterior Analytics", and "Topics" forms the "Organon" or complete books of Aristotelian logic. Students of classical philosophy and literature will find this volume of much interest.