One cannot but admire the courage and energy which were essential to undertaking and completing such a comprehensive treatise on a subject that is advancing so rapidly. The nutritionist will here find a background of the chemistry and clinical aspects of the vitamins that will be most helpful. The biologic chemist should obtain much from the clinical portions of the book, and the clinician will benefit greatly by reading the chemical portions.
It is inevitable that the rapidly increasing knowledge in the fields of biologic chemistry, nutrition and clinical medicine renders a book of this type old in many respects even at the time of its publication. The quantitative designation of thiamine, riboflavin and ascorbic acid in terms of international units reflects a usage that is now outmoded by the ability to designate these substances in terms of milligrams. The designation throughout much of the book of the various B