In this new edition of Professor Hendel's Studies in the Philosophy of David Hume (1925), there are no changes in the body of the work, except the elimination of the original Chapter five, “Space, Time and Reality,” and its replacement by a short Appendix (III) entitled “On Space and Time: Correction of Former Errors.” Three appendices have been added: I. “The ‘Discoveries’ of Hume and the ‘New Scene of Thought’”; II. “Hume's Relation to Hutcheson;” III. “On ‘The Nature of Experience’ and the Senses in Which It Has Been Considered Normative.” A more substantial addition is a thirty-page introduction in which Professor Hendel reviews the great efflorescence of Hume scholarship in the present century and notes how vastly more important Hume the philosopher looms now than when he wrote the Studies. Finally, there is a supplement of one hundred pages, “On Atomism: A Critique of Hume's First Principles and Method.”