An examination of this volume will at once make it evident that it was not prepared for use with students who have specialized in organic and biological chemistry. The object in view was rather such a presentation of the subject-matter related to human nutrition as would be more or less adapted to popular use, but particularly to instruction of students with moderate scientific acquirements, whether in colleges, secondary schools, short courses, schools of domestic science, or correspondence schools. The reliable knowledge bearing on the nutrition of man is mainly to be 'found in elaborate works on physiology and physiological chemistry, the contents of which are not generally available. Moreover, the highly technical facts are usually not centered around a philosophy of living. The aim here has been to show the adjustment of this knowledge to a rational system of nutrition without insisting upon adherence to technical details that are not feasible in the ordinary administration of the family dietary.

It is needless to state that the author makes no claim to having written on his own authority, but, on the other hand, he has relied upon the conclusions of those authorities and investigators whose sound scholarship in this field of knowledge is unquestioned. The following literature is that which has mainly been considered:

Metabolism and Practical Medicine, Von Noorden; translated by J. Walker Hall.

Textbook of Physiological Chemistry, Abderhalden; translated by William T. Hall.

The Science of Nutrition, Lusk.

A Textbook of Physiological Chemistry, Hammersten; translated by Mendel.

Der Kindes Enahrung, Czerny and Keller.

Chemistry of Food and Nutrition, Sherman.

Foods and their Adulteration, Wiley.

Physiological Economy in Nutrition, Chittenden.

Textbook of Physiology, Howell.

Textbook of Physiological and Pathological Chemistry, Bunge.

The publications on human nutrition of the Office of Experiment Stations.

Papers by Dr. L. B. Mendel.

Generous acknowledgment should be made to Lea & Febiger, Philadelphia, Pa., for permission to use the excellent cuts from Anatomy and Physiology for Nurses by Kiinber.

W. H. Jordan.

New York Agricultural Experiment Station, Geneva, N.Y., October 27,1911.