164 



Influence of Inanition on Metabolism. 



advisable to make complete analyses of both samples of feces in so far as 

 practicable, and the more essential determinations were fortunately secured on 

 both samples. It was impossible to determine fat in feces owing to the small 

 amount of material. After it had been discovered that the method ordinarily 



Table 115. Percentage composition of food and feces Metabolism experiment 



No. 74. 



Labor- 

 atory 

 num- 

 ber. 



Kind of material. 



fa) 



Water. 



(&) 



Pro- 

 tein. 



(f) 



Nitro- 

 gen. 



(9) 



Car- 

 bon. 



(ft) 



Hydro- 

 gen. 



W 



Heat 



of 

 com- 

 bus- 

 tion 



per 

 gram. 



3826 



3827 

 3828 

 3829 

 3838 

 3839 



P. ct. 



Milk 79!47' 



Apple 86.11 



Orange juice 87 . 87 



Graham crackers. 5.10 



Feces 75.08 



Feces 67.51 



P. ct. 

 2.98 

 .15 

 .49 

 5.18 

 9.06 

 6.54 



P. ct. 



0.48 

 .03 

 .08 

 .91 



1.45 



1.04 



Cals. 

 1.478 

 540 

 439 

 462 

 533 

 016 



1 Assumed. See Analyses of Feces, Part 3, of this report. 



Table 116. Weight, composition, and heat of combustion of food and feces- 

 Metabolism experiment No. 74 (Quantities of food per day). 



(a) Weight grams. . 



(&) Water do 



(c) Protein do. . . . 



(d)Fat do 



(e) Carbohydrates, .do. .. . 



(/) Ash do 



(g) Nitrogen do. . . . 



(h) Carbon ... do. . . . 



(i) Hydrogen do. . . . 



(j) Oxygen (by difference) 



grams 



(k) Heat of combustion 



calories 



Food. 



1 3826. 

 Milk. 



1201.00 



953 . 64 



35.76 



144.36 



58.32 



7.92 



5.76 



147.36 



23.04 



62.28 



1774 



1 3827. 

 Apple. 



122.70 



105.66 



.18 



16.59 



.27 



.04 



6.99 



1.10 



8.64 



66 



1 3828. 



Orange 

 juice. 



312.90 



274.95 



1.53 



35.26 



1.16 



.25 



14.52 



2.38 



19.64 



1 3829. 

 Gra- 

 ham 

 crack- 

 ers 



35 . 00 



1.79 



1.81 



3.61 



27.22 



.57 



.32 



15.56 



2.48 



14.28 



156 



Total 

 for 

 day. 



1670.60 



1336.04 



39.28 



147.97 



137.39 



9.92 



6.37 



184.43 



29.00 



104.84 



2133 



Feces. 



!3838. 



38.40 



28.83 



3.48 



3.39 



1.35 



1.35 



.56 



5.11 



1.82 

 59 



13839. 



67.90 



45.84 



4.44 



4.45 



8.57 



4.60 



.71 



1 1 . 56 



1.75 



3.44 



137 



Total 



for 



3 days. 



106.30 

 74.67 

 7.92 

 7.84 

 9.92 

 5.95 

 1.27 

 16.67 

 2.48 



5.26 



196 



Aver- 

 age per 

 day. 



35.43 



24.89 



2.64 



2.61 



3.31 



1.98 



.42 



5.56 



.83 



1.75 



65 



1 Laboratory number. 



used for determining the fat in feces gives results that are too low (see 

 below), it was found that unfortunately the samples for this experiment had 

 been used up in making other analyses. The amount of fat in the feces was 

 therefore estimated by the method explained under Analyses of Feces. 



