The great recommendation for a commercial food product today is that it be rich in a certain substance called vita· min. The clever advertiser makes such capital of this fact for his product that when one picks up a magazine the pages are filled with the promise of the various products rich in this new much-to-be-desired property of food. Some doctor has decreed that this vitamin craze which has so taken our nutrition literature by storm has rapidly become a fad, until the true meaning of the term vitamin has often been completely misinterpreted. But the fact remains that vitamins have established themselves as a substance found in our food.