40 



THIRD TRIAL. 



In this run the use of carbonatation and lignite was discontinued. The diffusion 

 juices were treated with sulphur fumes until well saturated. They were then treated 

 with lime and clarified in the usual way. 



The clarification took place readily. The quantity of scums was very small, and 

 the sediment suhsided rapidly, forming a thin layer on the bottom of the tank, per- 

 mitting the clear liquor to bo easily an<3 completely drawn off. The juice passed at 

 once from the clarifiers to the double effect pan and subsequently received no further 

 purification. 



Following are the analytical data obtained : 



TABLE No. 41. Third diffusion run December 10 and 11, 1888. 



First sugar per ton pounds.. 143 



Number tons cane used v 110 



The molasses from the first sugar was boiled to string proof, and put in wagons. 

 A good crystallization of second sugar was secured but, the molasses having been left 

 too acid, a good separation was not secured. Mr. Barthelemy therefore decided to 

 reboil the molasses with some of the product of the mill process, and therefore no 

 statement of the quantity of second sugar can be given. It was estimated at 30 

 pounds per ton. 



The cane from which this run was made was grown on new back land and was the 

 poorest of the whole season. 



The percentage of sugar extracted of total sugar in cane was 92.80. 



FOURTH TRIAL. 



In this run the diffusion juice was treated with lime until almost neutral. It was 

 then boiled, skimmed, and allowed to settle. Tlio scums and sediments were of small 

 volume and were all returned to the battery. 



