THE DIFFUSION PROCESS. 



Each time a cell is filled with fresh chips a charge of juice is drawn and a cell 

 of exhausted chips emptied. 



The following notes on the quantity of juice to draw are taken from 

 Spencer 1 : 



" With a constant percentage of sucrose in the normal juice, a uniform 

 draw and a perfectly regular extraction, the dilution and consequently the per 

 cent, sucrose in the diffusion juice will vary considerably. This variation is 

 due to the variable juice content of the cane. In ordinary seasons in 



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