270 CULTIVATED VEGETABLES. 



ordinarily from seventy to one hundred gal- 

 lons, and the boilers between the clarifiers 

 and teache diminish in size from the first to 

 the last. Where the clarifiers are in the 

 middle, there is usually a set of three boilers 

 on each side, which constitutes in effect a 

 double boiling-house. On very large estates 

 this arrangement is found useful and neces- 

 sary. The objection to so great a number is 

 the expense of fuel ; to obviate which in 

 some degree, the three boilers on each side 

 of the clarifiers are commonly hung on one 

 fire. The juice runs from the receiver along 

 a wooden gutter lined with lead, into the 

 boiling-house ; where it is received into one 

 of the clarifiers. When the clarifier is filled, 

 a fire is lighted, and a quantity of Bristol 

 quick-lime in powder, which is called tem- 

 per, is poured into the vessel. The use of 

 the lime is to unite with the superabundant 

 acid, which, for the success of the process, it 

 is necessary to get rid of. The quantity 

 sufficient to separate the acid must vary, ac- 

 cording to the strength of the quick-lime, 

 and the quality of the liquor. Some planters 

 allow a pint of lime to every hundred gallons 

 of liquor ; but Mr. Edwards thinks that little 

 more than half the quantity is a better me- 



