53 



TABLE No. 55. Sirups. 

 f Dates and numbers correspond to comparative samples in above table.] 



Any inversion which would take place in the process of concentration 

 would be indicated by an increase in the ratio of reducing sugar and 

 sucrose. 



In the entering juices the mean ratios are as follows, viz: 



By direct polarization, 3.45 parts reducing sugar to 100 of sucrose. 



By double polarization, 3.39 parts reducing sugar to 100 of sucrose. 



For the issuing sirups the ratios are as follows : 



By direct polarization, 3.57 parts reducing sugar to 100 of sucrose. 



By double polarization, 3.51 parts reducing sugar to 100 of sucrose. 



It will be seen by the above numbers that the inverting effect of the 

 Yaryaii pan is practically nothing. It amounts to only one-tenth of a 

 pound to 100 pounds of sugar made or 2 pounds to the ton of sugar. 



ANALYSES OF BAGASSE. 



Sixteen determinations were made at various times during the sea 

 sion of the quantity of water and sugar in the bagasse. The samples 

 were taken as follows : From time to time during fifteen to twenty min- 

 utes a handful of the bagasse issuing from the mill was taken and placed 

 in a covered vessel. These samples were then thoroughly mixed to- 

 gether and a portion taken for analysis. Small quantities of bagasse 

 were taken from the selected portion and cut into very fine chips. 

 Weighed portions of these chips were then dried at 105 C., and weighed 

 for the determination of moisture. 



For the determination of sucrose, weighed portions of the bagasse 

 were extracted in a marked stoppered bottle for two hours at the tem- 

 perature of boiling water. After cooling, the contents of the bottle 

 were poured in a mortar and thoroughly rubbed up with a pestle. The 

 sucrose was determined in a filtered portion of the liquid, due allow- 

 ance being made for the volume occupied by the fiber of the cane. The 

 results of the analyses are given in Table No. 66. 



