Metabolism Experiment No. 70. 



97 



separation between the colored and uncolored portions of the feces was made. 

 The total weight of fresh feces assumed as resulting from the food consumed 

 during the 3 days of the experiment was 182.9 grams. 



Although these feces were not passed in 3 equal daily amounts, it is here 

 assumed, as is customary in experiments of this nature, that the total feces 

 should be apportioned equally among the 3 days of the experiment. Such 

 an apportionment is especially fitting' in this particular experiment, because 



Table 56. Weight, composition, and heat of combustion of food and feces 



Metabolism experiment No. 70. 



Lab- 

 ora- 

 tory 

 num- 

 ber. 



Date and 



kind of 



material. 



(a) 

 Weight, 



(6) 

 Water. 



(c) 



Pro- 

 tein. 



(d) 



Fat. 



(e) 



Carbo 

 hy- 

 drates 



(f) 

 Ash. 



iff) 



Ni- 

 tro- 

 gen. 



(h) 



Car- 

 bon. 



(i) 



Hy- 

 dro- 

 gen. 



(i) (*) 



Oxy- Heat 



gen i of 

 (by com- 

 differ- bus- 

 ence). tion. 



100L 

 Food. 



Dec. 20-21. 

 3806 Milk 



3807 

 3773 



3807 

 3773 



3808 

 3773 



3809 



Milk 



Plasmon . . , 



Total for day 



Dec. 21-22. 



Milk 



Plasmon . . . 



Total for day, 



Dec. 22-23. 



Milk 



Plasmon. . . 



Total for day, 



Feces. 



Total, 3 days, 



Av. per day. 



Gms. Gms. Gms. Chris. 

 1320 . 10 1044 . 73 39 . 60 166 . 73 



332.80 

 5.00 



261.11 

 0.49 



9.98 

 3.73 



45.13 

 0.01 





1657.901306.3353.31:211.87 



Gms. 

 60.59 



14.48 

 .34 



Gms. 

 8.45 

 2.10 

 .43 



75.41 



10.98 



Gms. Gms 

 6.34 169.76 



1.60 

 .60 



8.54 



44 . 93 

 2.21 



Gms 

 26.40 

 6.99 

 0.31 



Gms. 



64.42 



16.07 



0.96 



216.90 



33.70 



81.45 



Oals. 

 2013 

 532 

 24 



2569 



1593.30 

 8.00 



1601.30 



1250.1047.80 

 0.79 5.96 



1250.89 53.76 



216.05 

 .01 



216-06 



69.31 

 .55 



69.86 



10.04 

 .69 



10.73 



7.65 

 .95 



.60 



215.10 

 3.54 



33.46 

 0.49 



76.95 2546 

 1.54 39 



218.64 33.95 



78.492585 



1598.30 

 6.23 



1604.53 



1254.6748.91 

 0.61 4.64 



1255.28 53.55 



214.32 

 .01 



214.33 



70.33 

 .43 



70.76 



10.07:7.83 



.54 .74 



10.618.57 



213.69 

 2.75 



32.77 

 0.3S 



79.272546 

 1.21 30 



216.44 33.15 80.48 2576 



182.90 

 60.97i 



121.43 

 40.48 



6.79 

 2.26 



43.10 

 14.37 



lui.ssi.os 



!3. 86 0.36 



36.12 5.72 6.97 

 12.04| 1.91 2.32 



448 

 149 



1 Ash by difference. See footnote p. 96. 



the kinds of food are the same and the amounts are practically the same 

 for each of the 3 days. 



Proximate and ultimate analyses of the food and feces furnish data regard- 

 ing the amounts in each of water, fat, carbohydrates, ash, nitrogen (protein), 

 carbon, and hydrogen. If it be assumed, then, that the feces represent the 

 material of unabsorbed food, the actual amounts absorbed by the body from 

 the food of each day, determined either in terms of the compounds, protein, 

 fat, carbohydrates, and water, or in terms of chemical elements, may be found 

 by deducting the weights of the elements or compounds in the feces from the 

 weights of corresponding elements or compounds in the food. It is customary 

 to consider the material absorbed from the food in terms of protein, fat, and 

 7 



