Since the last revision in 1909 so many changes in opinions on diet and so many new facts have been added to the subject that a revision of this volume has been thought necessary. New tables are added and many of the chapters are entirely rewritten. A section on "Mechanism of Digestion" is also included. The chapter dealing with infant feeding contains practically all that is new and accepted on this subject. The value of the book as a handbook for the practitioner on a difficult subject needs no comment.