8 



digestion coefficients have been determined. A total of 184 experiments were 

 made and a total of 65 human subjects were used. Each experiment lasted three 

 days. The subjects were mostly students of the Wesleyan University between the 

 ages of 19 and 32 years. The results of the experiments are summarized as 

 follows : — * 



" The results of the several digestion experiments in the different series are sum- 

 marized in the following tables. In these tables the results are given for the digestion 

 coefficient of the fat and the availability of the energy, both m the total diet and m the 



otlGGSG cllOHO • 



" The amount and exact composition of the basal ration used in the experiments is 

 not ffiven for the reason that it varied in different experiments with the several subjects, 

 and space will not allow its insertion. All of the data for the entire series of experi- 

 ments are in the Office of Experiment Stations, Department of Agriculture, Washington. 

 D C where they may be consulted by those who wish a more detailed account of the 

 work '^s previously mentioned, the basal ration was bananas and bread. The amount 

 of cheese eaten per man per dav varied somewhat, according to the appetite and prefer- 

 ence of the subjects, but an average was not far from 0.5 to 1 pound per day. The exact 

 amount eaten was in every case recorded, as were all other experimental data. While 

 It is believed that the variations in the amount of the basal ration doubtless affected to 

 some extent the digestibility of the cheese, it is thought best not to enter into this 

 subject in this brief account of the work. From the character of the diet it will- be seen 

 that practically all of the fat and the greater part of the proteid came from the cheese. 



Restilts of Digestion Experiments with Cheese Cubed in Different Ways Added to 



A Basal Ration. Middleton Experiments. 



* Circular No. 166, Bureau of Animal Husbandry, U.S. Dept. of Agri. 



