284 The Ohio Journal of Science [Vol. XVIII, No. 7, 



Assuming that 6.0G grams of protein represents the unab- 

 sorbed protein of the milk plus the metabolic protein from the 

 digestive fluids, etc., an assumption that can not be far from 

 the truth, then the unabsorbed protein from the soy bean meal 

 must be 23.20 — 6.60 = 16.60 grams. This gives a coefficient of 

 digestibility for the protein of the soy bean meal of 90.9. If 

 the carbohydrates of milk are 99 and cane sugar 100 per cent 

 absorbed then the coefficient of digestibility for the nitrogen- 

 free extract of the soy bean meal is 96. In this experiment, as in 

 Experiment I, we cannot calculate accurately the digestibility of 

 the fat but we were not particularly concerned with that phase 

 of the subject at this time. By adopting the proper experimental 

 procedure one might determine satisfactorily the digestibility 

 coefficient of soy bean fat, but for that purpose the amount of 

 the experimental fat should be largely increased while other fats 

 in the diet should be reduced to a minimum. 



Summary: The protein of soy bean meal, prepared as a 

 bread by mixing with wheat flour or as a porridge, is highly 

 digestible by man. The digestibility factors obtained in the 

 two experiments were 91.3 and 90.9. 



The carbohydrates of soy bean meal appear to be much more 

 highly digestible and less prone to intestinal fermentation than 

 are the carbohydrates of the common white bean. The digesti- 

 bility factors obtained in two experiments were 96.9 and 96. 



The chemical composition, digestibility and palatability of 

 foods prepared from soy bean meal from which most of the oil 

 has been expressed, indicate that such a meal is an excellent 

 food for man. 



References. 



1. Oshima, Bui. 159 (1905), U. S. Dept. Agr. Office Exp. Stations. 



2. Bui. 28, U. S. Dept. Agr. Office Expt. Stations. 



3. Street and Bailey, J. Ind. Eng. Chem. 7, 853, (1915). 



4. Mendel and Fine. J. Biol. Chem., 10, 447, (1914). 



5. Bull. 187, U. S. Dept. Agr. Office Expt. Stations. 



6. Daniels and Nichols, J. Biol. Chem., 32, 91, (1917). 



7. McCollum, Simmonds and Pitz, J. Biol. Chem., 29, 521, (1917). 



8. Osborne and Mendel, J. Biol. Chem., 32, 369, (1917). 



9. Gephart and Csonka, J. Biol. Chem., 19, 521, (1914). 



10. Bui. 107, U. S. Dept. Agr. Bureau Chem, 



11. Report Maine Expt. Station, 1898. 



12. Farmers Bui. 363, 22. 



Date of Publication, June 30, 1918. 



