262 



The Philippine Journal of Science 



Funk, 4 in his study of the vitamine bodies in rice polishings, 

 found that he obtained smaller yields of nitrogen from these 

 compounds when the Kjeldahl method was used than when the 

 Dumas or absolute method was used. 



Table I. — Nitrogen determination by means of the Kjeldahl method. 



Compound. 



Nitrogen. 



Nitrogen 

 liberated. 



Theory. 



Found. 





Per cent. 

 11.96 



11.76 

 20.90 



17.72 

 16.47 



10.85 



10.85 



9.53 

 32.54 



10.00 



17.34 



22.23 

 35.44 



Per cent. 



11.92 



11.99 



11.75 



11. 79 



f 11. 62 



1 11.69 



17. 20 



16. 61 



12.18 



12.19 



12.34 



11.30 



9.50 



12.70 



8.41 



8.79 



8.58 



8.48 



6.28 



6.14 



32.44 



| 10. 12 



1 9.90 



r 16. 93 



Per cent. 

 99.73 



100.00 

 98.25 

 98.69 

 98.80 

 99.40 

 82.30 

 79.47 

 68.72 

 68.73 

 69.64 

 68.63 

 57.69 

 77.12 

 77.50 

 81.00 

 79.07 

 76.37 

 65.90 

 64.43 

 99.66 



100.00 

 99.00 

 97.67 



















Oxynicotinic acid 





[ 15.89 i 91.63 

 f 22.25 100.00 





| 34. 95 



1 34. 99 



33.39 



28.02 



98.60 



100.00 

 98.82 





33.34 

 28.35 







Williams, 5 who was investigating this subject of compounds 

 with antineuritic properties, at once saw the possibility of making 

 use of this property of resisting decomposition to determine the 

 chemical character of these compounds. As a preliminary step 

 in the solution of this problem we undertook a determination of 



4 Funk, C, Journ. Physiol. (1913), 46, 177. Drummond, J. C, and Funk, 

 C, Biochem. Journ. (1914), 8, 598. 



"Williams, R. R., This Journal, Sec. A (1916), 11, 49. 



