FERMENTATION. 85 



The following numbers were obtained, I. from the 

 extract of wine ferment in acetic acid, precipitated 

 with potash ; and II. from the potash extract, preci- 

 pitated with acetic acid : 



With potash. With acetic acid. 



I. II. Schlossberger. Mulder. 



C. 55-5 55-5 55-5 54'4 



H. 7-5 7'5 7-5 7'0 



N. 14-0 14-0 14-0 16-0 



O. 23-0 23-0 23-0 22'6 



Wine ferment burnt as such, yielded 



Mulder. Walz. 



Different kinds of ferment. Quite another 



Walz. I. II. III. Wine ferment. 



C. 49-4 51-9 51-3 5O9 49'6 



H. 6'6 7'2 7-0 7-0 6'6 



N. 10-5 11-1 9'5 8-5 10-4 



0. 33-5 29-8 32-2 33'6 33'4 



I have used round numbers throughout, not only 

 because the whole analysis appears to me suspicious, 

 but also (I venture to assert it, having convinced my- 

 self I am right) because it was made with the pen and 

 not with the ferment. 



In the first place, in the carbon and hydrogen of 

 the cellulose ferment, he exactly splits the difference 

 between Schlossberger' s numbers and mine. He di- 

 vides his confidence between Schlossberger and me. 



The next point is of more importance. He finds the 

 two substances treated with potash, or acetic acid, 

 exactly correspond to one another ; although every one 



