Abstract
This book is an anthology of essays dealing with the problem of the justification of claims to factual knowledge of various sorts. All, except one excerpted from a book, were originally journal articles. Part one, contains essays by R. F. Holland, William Earle, and E. J. Furlong on the problem of memory. Part two, contains essays by A. J. Ayer, C. H. Whiteley, and H. H. Price. Part three contains essays by Ayer, R. J. Hirst, and C. H. Whiteley. A general introduction precedes the essays. A useful bibliographical essay is also given.--A. S. C.