Even carnivorous animals nourish on a diet of nuts with other vegetable foods and cooked cereals. The Turks mix nuts with their pilaff of rice and the Armenians add nuts to their baalghoor, a dish prepared from wheat which has been cooked and dried.
That nuts are not only competent to serve as a staple food, but that they may fill a very important place as accessory foods in supplementing the imperfect proteins of the grains and vegetables is shown in a very conclusive way by an extended research by Dr. Hoobler, of Detroit.
Before describing Dr. Hoobler's experiment I may be allowed to explain that some years ago, in 1899, I was asked by the then United States Secretary of Agriculture to undertake experiments for the purpose of providing a vegetable substitute for meat. Dr. Dabney said there was no doubt that the time would come when such substitutes would be needed on account of the scarcity of meat. I succeeded in developing several products which have come to be quite widely known and used more or less extensively in this country and Europe. Among these were Protose (resembling potted meat) and malted nuts, a soluble product somewhat resembling malted milk. It was noted that the malted nuts when used by nursing mothers greatly increased the flow of milk and promoted the health of the infant. Recently Dr. Hoobler undertook an extensive feeding experiment with nursing mothers and wet nurses as subjects. He made use of these nut preparations as well as of ordinary nuts and compared the results with various combinations into which meat and milk entered in various proportions. He found that a diet of fruits, grains and vegetables alone gave a very poor quality of milk, but when nuts were added the result was a milk supply superior in quantity and quality to any other combination of foodstuffs, not excepting those which included liberal quantities of milk, meat and eggs. From this it appears that nuts possess such superior qualities as supplementary or accessory foods that they are able to replace not only meats, but even eggs and milk in the dietary. The full account of Dr. Hoobler's interesting observations will be found in the Journal of the American Medical Association for August 11, 1917.