57 



of molasses. It is difficult to see any beneficial result attending the 

 treatment in question. 



EFFECT OF DIFFERENT METHODS OF CLARIFICATION. 



In order to determine the amount of organic matter removed by dif- 

 ferent methods of clarification the following experiments were made : 

 Weighed samples of mill juice were treated with subacetate of lead 

 until no further precipitation took place. The precipitate was then 

 thoroughly washed with hot water until all excess of lead was removed 

 and then dried. 



Similar treatment was given to the same juice after clarification by 

 lime in the usual way, after filtration through lignite, and after single 

 carbon atatiou. The results are recorded in Table No. Gl. 



TABLE No. Gl. Effects of different methods of clarification. 



It is seen that the weight of the dried precipitate is in every case 

 greatest in the raw juice and least in that which had been subjected to 

 single carbonatation. The purity of the juice was increased least by 

 ordinary clarification, next by filtration through lignite, and most of all 

 by carbonatation. 



In regard to the removal of albumen, filtration through lignite ap- 

 pears to be the most efficacious method. 



Carbonic dioxide gas in gases from lime-ldln and bagasse chimney. 



The quantity of carbonic acid in the gases from the lime-kiln and 

 bagasse chimney is given in Table No. CO. 



The object of determining the percentage of CO 2 in the bagasse 

 smoke was to see if it could be used in the process of carbonitation. 

 Since, with cane juices, this process requires so little lime it seems 

 probable that the gases from the Bagasse chimney can be used for this 

 purpose. 



