A Few Popular Facts About Diffusion. 45 



enquire what this dilution means. If to 100 tons original 

 cane-juice, as obtained from the canes by the use of mills, 

 you add 30 tons water, you will have effe6led a dilution 

 of 30 0/0. In other words this is what is meant by the ex- 

 pression " 30 0/0 dilution." This dilution is an ample 

 allowance for all the requirements of the new process, 

 and on the average, should never be exceeded over the 

 entire work of a crop. Pra6lical sugar makers will find 

 that such a dilution has virtually lowered the density of 

 the original cane juice 2 deg. Beaume. Whereas with 

 mills, they would have found juice standing at lo deg. 

 Beaume in the clarifiers, it will, with diffusion, only stand 

 at 8 deg, Beaume. Although only 30 0/0 water has been 

 added to the original juice, it means that about 37 0/0 

 more water has to be got rid of by evaporation in the 

 course of manufa£luring the diffusion-juice into sugar, 

 than would have been the case with equal quantities of 

 mill juice, and were you only working 16 or 17 hours per 

 day, as formerly, your evaporating plant would, on the 

 score of dilution alone (in the case of equal quantities of 

 juice) have to be made capable of doing 37 0/0 more 

 work than formerly. As you are supposed to be dealing 

 with equal quantities of canes, there is the increased 

 extraction of original juice, as well as its accompanying 

 dilution, to be reckoned with, and were it not for the 

 fa6t that you work continuously night and day with 

 diffusion, the increase in the power of the evaporating 

 plant would, to be really economically efficient, have to 

 be about 80 0/0. Fortunately, the continuous work of 

 diffusion comes here to our aid,, and the above complica- 

 tions may be summed up by saying that if your dilution 

 is 30 0/0 and you increase the efficiency of your evapo- 



