47 



and then a third, when they have exerted their united 

 strength on the lever the job is done, and after allowing the 

 bags to drain, whilst they are filling others the press is 

 unscrewed, the bags removed, the pulp cakes disposed of, 

 the bags cleansed, and the operation first described is con- 

 tinued till the whole quantity of pulp prepared is dispos. 

 ed of 



CHAPTER IV. 



DEFECATION OF THE JUICE. 



The juice of the beet as it comes from^ the press carries 

 with it all the soluble parts of the root. It contains in 

 this state not only sugar, and ivater, but other component 

 parts, which cannot be separated by evaporation alone, 

 they must be precipitated by chemical agents ; many and 

 expensive experiments were made in search for these, which 

 I shall not here attempt to explain. The present process 

 is as follows, suppose a boiler containing 400 galls, of 

 juice, add before lighting the fire, 8 lbs. sulphuric acid at 

 66^ 1 part acid, 3 parts water, diluted, mix quickly and 

 thoroughly with the juice, then take 9lbs. of quick lime 

 weighed before it is slaked, then slake with warm water 

 to the consistency of milk, throw this also into the juice 

 and stir the whole completely, the fire is now to be kindled 

 under the boiler, and its contents raised to the temperature 

 of 190 Fahrenheit, then animal carbon that has been em- 

 ployed in clarification is added and well mixed, and a portion 

 of diluted ox blood, stirred in carefully, the fire is withdrawn, 

 the juice allowed to settle and is drawn ofl^ clear, through a 

 cock placed near the bottom of the boiler. It is important 

 to observe that the juice when the sulphuric acid is added 



