202 BEET ROOT SUGAR. 



geaerally used for this purpose are sulphuric acid 

 and lime, great care in the use of which is recom- 

 mended. Heat is necessary in defacating the juice, 

 and for this purpose boilers are necessary. 



The boilers should be made of copper, and of a 

 circular shape. Their size should correspond with 

 that of the establishment, varying from two to five 

 or six hundred gallons. Some manufacturers prefer 

 having a greater number of small ones, ranging in 

 size from 40 to 50 gallons. Every operation, in ma- 

 king sugar from the beet, should be carried on with 

 the utmost despatch. The rasping, as observed be- 

 fore, should go on rapidly, as heat is generated, and, 

 consequently, fermentation takes place in a propor- 

 tionate degree, by which a corresponding portion of 

 sugar is lost. Heat acts powerfully on all organic 

 substances held in solution by water. Now the long- 

 er the time between the rasping and the press, and 

 between the press and the boilers, the greater the 

 fermentation, and, consequently, the greater the 

 loss of sugar. Many times through inattention, or 

 other causes, this is so great that the sugar cannot be 

 seperated at all. Therefore, it is necessary that the 

 boilers should be filled as rapidly as possible, and a 

 number of rasps and presses should be kept in oper- 

 ation, in proportion to the size of the boilers used. 

 If the boiler holds 600 gallons, and it is desired to fill 

 it with juice in two hours, four tons of rodts must be 

 rasped and pressed. To perform this in the givett 

 time, will require three rasping mills and five presses. 



