THE ANTIBERIBERI VITAMINE 



185 



Aside from this, the first substance, on heating in vacuum, loses 

 a small amount of substance rich in carbon, giving lower analytical 

 results. Although the statement is often made that we had obtained 

 only impure nicotinic acid, it is not justified, since the analytical 

 figures are too far apart from the composition and the characteristics 

 of this acid. Regarding the therapeutic action of these substances, 

 many experiments were performed, some of which naturally turned 

 out negative. In the table, the product C26H 2 iO9N 5 is called 

 substance I, and Cagl^sOgNs, substance II. 



