BEET ROOT SUGAR. 197 



pedition than any other in the manufacture of sugar 

 from the beet. The quantity rasped at any one time 

 should never exceed that which is required for imme- 

 diate use, as the pulp is powerfully operated on by 

 the atmospheric air, so much so, that in half an hour 

 a great change is effected. The rasp and the press 

 should go together in their operation, the one but a 

 little in advance of the other. There is another 

 thing which should be particularly mentioned. In all 

 cases the rasp should be kept perfectly clean, as any 

 particles of pulp left sticking to it will ferment, and 

 injury must ensue. 



It is expensive to work the rasp mill by human 

 power, and, therefore, oxen are better suited than 

 even horses, because they are kept with less cost than 

 horses, and will eat the pulp, which horses will not. 

 Some manufacturers in France, prefer wind power to 

 either that of water or steam, on account that water 

 cannot always be obtained in level countries, and the 

 expensiveness of steam, when not located in a coal 

 region. But there is one great objection to wind 

 power, which is, that it is very uncertain and irregu- 

 tar. 



TO EXTRACT THE SUGAR, 



Sugar fe extracted from the pulp only by pressure. 

 The greater the pressure the greater the quantity ob- 

 tained from a certain quantum of pulp, yet it is im- 

 possible with the greatest known pressure that the hjr- 

 17 



