REPORT OF THE CHEMIST. 



61 



(averaging 97.1 per cent.), there is still eviclence of tlie destruction of 

 an average of 35 per cent, of tite glucose. This destruction of glucose 

 appears to be compensated, in part, by the inversion of a certain i)or- 

 tion of the crystallizable sugar, and this invertefl sugar possesses such 

 action upon the jyolarized ray as to render the results of the polariscope 

 practically worthless. 



Practically, it appears that the proportion of crystallizable sugar 

 present in the juice, which may be obtained in the sirup, dei)eiids 

 greatly ui)Ou the condition of the stalks when worked. For, as will be 

 seen, the average nniount secured in all these experiments was but 77.1 

 per cent.; still in those sirups prepared from canes which were in tlie 

 proi>er condition the amount wiis over 90 per cent, of the crystallizable 

 sugar present in the juice operated upon. (See exi)eriments Nos. 6 and 

 7.) It is not imi)robable that even better results may be secured after 

 further exx)eriments shall have perfected the process of manufacture ; 

 but in view of the fact that such results have been attained with such 

 crude and simple apparatus as that employed in the experiments here 

 recortled, this result is highly gratifying. 



We may ho])e then to secure in siruj) 00 per cent, of the crystallizable 

 sugar present in the juice ojierated upon. 



The results obtained in the experiments made with stalks from 

 Stowell's Evergreen Sweet Corn are most romarknble and demand cx- 

 I)lanation. It will be seen that the juice obtained from these stalks 



