The General Catalogue has in the second edition been brought up to January 1920, and a third edition is in preparation. Supplements are also from time to time issued comprehending the books published since the current edition of the Catalogue. The Supplement now current comprises all books published in 1920. For the convenience of specialists the Catalogue is also issued in sections—History, Literature, the Classics, Natural Science, Cheap Reprints—and special lists have recently been made of books on such subjects as the British Empire, International Law and Politics, India, Modern Philosophy. Schoolmasters and University teachers are asked to apply for the _Select Educational Catalogue_ issued at frequent intervals, which by omission of the larger and more elaborate books allows of illustrative information for which there is no room in the general catalogue. The General Catalogue has been computed to contain over 8,000 distinct books or editions of books. These vary from such works as the _New English Dictionary_ and the _Dictionary of National Biography_, with their 15,000 and 30,000 pages, to the smallest and cheapest pamphlets and school-books. The total may be guessed to comprise something like two and a half millions of printed pages of which no two are identical. The issue of the Catalogue has secured a wide and increasing recognition of the comprehensive character of Oxford publications. ‘There are publishers and publishers, but there is only one Oxford University Press’, exclaims a writer in the _Athenaeum_; and many reviewers have noted with sympathetic admiration the value of the Catalogue, not as a mere price list but as a work of reference and as a book to read. Though it necessarily requires revision as new publications accrue, it is hoped that the Catalogue will not be treated as ‘throw-away literature’. It is a well-printed and solidly bound book, and the cost of supplying free copies to book-buyers all over the world is not inconsiderable.