TEXT-BOOK OF PHYSIOLOGY. 



WEIGHT OF FOOD. 



Of ioo parts of solids, 



Of ioo parts of proteid, 



Of ioo parts of fats or carbo- 

 hydrates, 



VEGETABLE. 



ANIMAL. 



Digested. Undigested. I Digested. 



75-5 

 46.6 



9-3 



24-5 

 53-4 



9-7 



89.9 

 8l.2 



96.9 



Undigested. 



II. I 



18.8 



Construction of Dietaries. Inasmuch as neither animal nor 

 vegetable foods contain the food principles in proper quantities and 

 proportions, the instinctive choice of mankind has led to a com- 

 bination of the two classes of foods. From the analyses tabulated 

 above it becomes comparatively easy to construct a suitable dietary, 

 composed of different articles of food, in which the food principles 

 shall bear the proper ratio one to the other a ratio based on the total 

 quantity of nitrogen (15 to 20 grams) and carbon (225 to 300 grams) 

 eliminated from the body daily. 



It is only necessary, therefore, to combine two or more foods, 

 the composition of which is known, in quantities sufficient to furnish 

 the requisite amount of nitrogen and carbon, or their equivalents in 

 proteid, fat, and carbohydrates. As illustrations of such combina- 

 tions the following examples are given: 



Foods. Food Principles. N, C. 



Meat, _ 250 gm., 8.8 oz. 1 Proteid, ioo gm. 15 50 



Bread, _ _ 400 gm., 14.2 oz. / | 



Fat, ioo gm., 3.5 oz. V ' 



Sugar, 70 gm., 2.5 oz. J Carbohydrates, 250 gm. ioo 



I 5 22 S 



Foods. N. C. 



Meat, .__ 225 gm. Ib 7.5 gm. 34 gm. 



Bread, 450 gm. i Ib. 5.5 gm. 117 gm. 



Fats, 113 gm. Ib. 84 gm. 



Potatoes, 450 gm. i Ib. 1.3 gm. 45 gm. 



Milk, 225 gm. ^ pint 1.7 gm. 20 gm. 



Eggs, 113 gm. \ Ib. 2.0 gm. 15 gm. 



Cheese, 56 gm., ^ Ib. 3.0 gm. 20 gm. 



21.0 335 



(Waller.) 



DAILY RATION OF THE UNITED STATES SOLDIER. 



Fresh beef, 20 oz. 



or pork, 12 oz. 



or bacon, 1 12 oz. 



Flour, 18 oz. 



or soft bread, 18 oz. 



or hard bread, 16 oz. 



Potatoes, 16 oz. 



or potatoes 1 1 \ and tomatoes 4^ 16 oz. 



Beans or peas, 2.4 oz 



Rice or hominy, i.6oz. 



Coffee, i.6oz. 



Sugar, 2.00 oz. 



Vinegar, 0.32 gill 



Salt, 0.60 gill 



