SOO SORGHUM. 



of glucose very marked. These results are, obviously, most undesira- 

 ble in sugar making. The conclusion thus far would be, that the so- 

 lution should, during boiling, be kept slightly alkaliue. 



In the. series of Experiments, No. 3, where a larger quantity of lime 

 ■was added to the solution, its effect at the outset was to remove from 

 the solution as a precipitate about half of the sugar, and the remainder 

 during eighteen houi's of boiling was found to be unchanged in amount; 

 on the other hand, the action of this excess of lime upon the glucose 

 was very marked, effecting practically its destruction within two hours, 

 and producing from the glucose other compounds of high color, which 

 dissolved in the liquid and gave it a deep wine-red color. 



It would appear from this last series of experiments that an excess of 

 lime has no action upon cane sugar, as has already been established, 

 and that its effect is to diminish rapidly the glucose present, and darken 

 the solution. 



The above experiments corroborate the results of practical working 

 with large quantities of juice, and explain fully the loss of the glucose 

 shown to be present in the fresh juices, but which was found in com- 

 paratively small quantity in the syrups manufactured from these 

 juices. 



Effect on Juice of Standing after Defecation. 



In the daily work at the Department of Agriculture, it became fre- 

 quently desirable to keep a supply of juice over night; and it was found 

 that, after defecating as usual with lime and heat, the juice could re- 

 main in the defecator without suffering any detriment. As this is a 

 matter of considerable practical importance in working up large 

 quantities of juice, especially if the work is not carried on through 

 the night, by enabling one to have a fresh lot of juice for the evapo- 

 rator early in the morning, the following results of these experiments 

 are given, including the analysis of juice bef jre defecation and alter 

 standing over night in the defecator, of the syrups produced, and the 

 percentage of sugar present in the juice and obtained in the syrup. It 

 will be seen that the results show no effects fairly to be charged against 

 this mode of procedure. 



