88 



NORTHERN SUGAR INDU.>TRY. 



thau calculatiou from the composition of the juice indicated. The fur- 

 ther prosecution of this method was therefore abandoned. 



Table No. 6 contains results of analyses of chips heated for one hour 

 at lOQo 0. in a closed bottle, with five times their weight of water. 



In Table No. 7 the same as above, except that the heating was con- 

 tinned for two hours. 



BAGASSES. 



Table No. 8 contains analyses of bagasses from canes from which the 

 mill juice given in the table was expressed. The theoretical composition 

 of the bagasse was calculated as follows : 



(1 .) The total juice in the canes is taken at 89 per cent, of their weight 

 for sorghum and 92 per cent, for sugar-cane. 



(2.) The weight of the bagasses, except in the case of the Louisiana 

 canes, was 36 per cent, that of the canes. 



(3.) The total weight of juice remaining in the bagasse was therefore 

 36—11=25 per cent, of total weight of cane, i. 6., 100 kilograms cane 

 contain 89 kilograms juice and 11 kilograms cellulose, &c., and 36 kilo- 

 grams bagasse contain 25 kilograms juice and 11 kilograms cellulose, &c. 



The juice marked No. 1 in table gave an analysis 10.38 per cent, su- 

 crose and 2.41 per cent, of other sugars. In 25 kilograms j uice, therefore, 

 there will be .1038x25=2.595 kilograms of sucrose and .0241x25=.602 

 kilograms of other sugars. Then 2.595-^36= percentage sucrose in the 

 bagasse = 7.21, and .602-^36= percentage other sugars in bagasse = 1.67. 



In Table No. 9 the same conditions obtain as in No. 8, except that the 

 boiling was continued twice as long. 



Table No. 10 contains analyses of bagasses boiled with five successive 

 portions of water. Each portion was somewhat larger in weight than 

 the bagasse, and the boiling each time was prolonged ten to fifteen min- 

 utes. 



Table No. 11, same as above, only ten extractions were made instead 

 of five. 



Table No. 12, bagasses heated in closed bottle one hour, with five times 

 weight of water. 



Table No. 13, same as above, heated for two hours. 



