FOODS — ANIMAL PRODUCTION. 



173 



As previously stated, in a number of the experiments the urine and 

 feces were analyzed and the balance of income and outgo of nitrogen 

 determined, as shown in the following table: 



Daily nitrogen balance in the digestion experiments. 



Ex- 

 peri- 

 ment 



No. 



Kind of food and weights per day (in grains). 



Bread 630, milk 2,525 



Bread 430, milk 2,678 



Bread 315, beef 758 



Bread 200, beef 333 



Bread 365, milk 1,941, eggs 492 



Bread 299, milk 1,897, eggs 390 



Bread 279, milk 2, 157, eggs 517 



Bread 354. milk 942, eggs 402 



Bread 238, milk 2,550, oatmeal 120, corned beef 100, 



bananas 482, sugar 50 



Bread 354, milk 638, oatmeal 78, corned beef 106, 



bananas 44 sugar 38, molasses 75 



Bread 131, milk 2,609, oatmeal 65, corned beef 75, 



bananas 2u9, molasses 125 



Bread 298, milk 2, 100, oatmeal 119, sugar 59 



Bread 353, milk 2,100, oatmeal 153, sugar 56 



Bread 280, milk 2,190, wheatlet 175, sugar 38 



Bread 187, milk 2,166, wheatlet 61, sugar 56 



Bread 303, milk 2,350, corned beef 211, canned corn 



760 



Bread 382, milk 2,378, boiled ham 125, canned corn 



425 



Bread 298, milk 2,350, corned beef 176, potato chips 



119 



Bread 205, milk 2,325, boiled ham 113, potato 



chilis 90 



Nitrogen. 



In 

 food. 



In 

 urine. 



Grams. Grams. 



22.5 

 20.3 

 28.9 

 13.7' 

 ?.6.4 

 22. 5 

 26.6 

 19.0 



25. 7 



15.3 



21.0 

 19.8 

 21.6 

 20.4 

 16.3 



29.4 



24.3 



25.5 



20.0 



21.9 

 11.7 

 25.5 

 12.6 

 21.3 

 16.3 

 19.5 

 12.6 



18.5 



12.0 



In 

 feces. 



Grams. 

 0.9 

 .6 

 1.4 

 1.0 

 . 1.5 

 1.1 

 1.7 



1.8 



1.2 



Gain 



Corre- 

 spond- 

 ing gain 

 or loss of 

 protein. 



Grams. Grama. 



-0. :: I — 1.! 



-0.3 

 I- 8. () 

 +2.0 

 +0.1 

 +3.6 

 f5. 1 

 +5.4 

 +5.6 



+5.4 



+ 2.1 



+8.0 

 +3.9 

 +4.8 

 —1.3 

 +2.8 



+1.9 



—1.5 



+4.9 



—0.4 



— L. 



+50.0 

 + 12. 5 

 + 0.6 

 + 22.5 

 + 32.5 

 +33.8 

 +35.0 



+ 33.8 



+ 13.1 



+50.0 

 +2».4 

 +30. 



— 8.1 

 + 17.5 



+ 11.9 



— 9.4 

 + 30.6 



— 2.5 



Nutrition investigations in Pittsburg, Pennsylvania, 1894- 



1896, Isabel Bevier ( U. S. Dept. Agr., Office of Experiment Stations 

 Bui. 52, pp. 48). — These investigations include six dietary studies of 

 families living in Pittsburg, a study of the variation in cost and com- 

 position of bread in Pennsylvania, and a bakery experiment. 



The dietary studies (pp. 7-43). — The studies were made with the fam- 

 ilies of a lawyer, two mill workmen, a boiler tender, a decorator, and a 

 glass blower. 



Tables are given showing the kind and amount of food purchased, 

 wasted, and eaten, and its cost, composition, and fuel value. The 

 average results are summarized as follows: 



Results of dietary studies — cost and composition of food eaten per man per day. 



Subjects. 



Carbohy- Fuel 

 drates. value. 



Professional man's family (No. 43) 

 Mill workman's family (No. 128).. 

 Mill workman's family (Xo. 129).. 

 Boiler tender's family (Xo. 189)... 

 House decorator's family (Xo. 190) 

 Glass blower's family (Xo. 191) . . . 



Grams. 

 380 

 307 

 314 

 683 

 368 

 385 



Calories. 

 3, 280 



2. 575 

 2,440 

 5,010 



3, 305 

 3,0«5 



The dietaries are discussed and compared with the results of similar 

 Studies made elsewhere, 



