This is the sixth edition of this standard textbook. Many of the articles have been elaborated and the chapters rewritten. This has brought the material up to the present date. Practically all the recent advances in pediatrics that have been worth while and advantageous have been incorporated in the present edition. It is rather remarkable that so much can be crowded into such a small space. It need not be feared, however, that the original purpose of the book has not been conserved. It is still as readable and as complete as the former editions. The printing is good, and the illustrations are clear and well chosen. This edition like its predecessors fulfils the requirements of the student and the practitioner for a complete and readable textbook in pediatrics.