11 



Up to the 22d of September the quantity of juice drawn at each charge 

 was li/JOO pounds. From this time to October 4, 2,640 pounds were 

 drawn off each time. Thence to the close of the season 2,420 pounds. 

 Assuming that each cell held 2,000 pounds of chips and the cane con- 

 tained 90 per cent, juice, we have the following data : 



Weight of chips in each cell pounds.. 2,000 



Normal juice in each cell do 1, 800 



Mean extraction (circa) per cent. . IKi 



Normal juice extracted from each cell pounds.. 1,674 



Charge withdrawn up to September 22 do 2,200 



Weight added water do 526 



Percentage of dilution 32.02 



Charge withdrawn September 22 to October 4 poiruds.. 2,640 



Weight added water do.... 966 



Percentage of dilution 57. 70 



Charge withdrawn October 4 to close pounds.. 2, 420 



Weight added water do 746 



Percentage of dilution 44. 56 



With the modern appliances for evaporating sugar juices in multiple 

 effect vacuum pans, the objections which have been urged against dif- 

 fusion on account of the necessary dilution of the juice are of little 

 force. A dilution of GO per cent, is not at all incompatible with the 

 complete economic success of the process. 



TABLE No. 6. Defecated juices. 



Dr. C. A. Crampton has furnished the following additional notes on 

 the foregoing analytical work : 



The fust analysis of fresh chips was mad*- on September 3, but the chemical con- 

 trol of the factory was not fully instituted until the 8th. This control consisted of 



