THE EXTRACTION OF JUICE BY MILLS. 



The results of the experiments are as below : 



Kef erring to the above table which represents the mean result of a series 

 of experiments, the decreasing purity of each successive fraction of juice is 

 well shown, except at the fourth fraction where an increase over the third is 

 noticed. This increase, obtained in all the experiments, is not due to accident 

 or error. The third fraction was obtained under very heavy pressure, and 

 probably contained much rind tissue juice. The fourth fraction was the first 

 obtained by adding water to the megass, and probably consisted largely of pith 

 tissue juice (which had remained unexpressed), to the exclusion of rind tissue 

 juice as the rind had not yet been sufficiently broken up to take up its 

 proportion of water. 



The following table gives the sucrose obtained in each fraction per 100 

 sucrose in cane, and in the last column is contained the amount of available 

 sugar per 100 sucrose in cane. 



The third table gives the extraction at any point, the purity and 

 proportion of available sugar, and the available extraction, i.e., the available 

 sugar per 100 available sugar in the cane. 



213 



