112 



MANUFACTURE OF SUGAR. 



affix a cock. Carefully fill the cask with charcoal, up to 

 about two-thirds of its height, avoiding all inequalities of 

 surface; and cover it with another and similar piece of 

 basket-work. The filter is now prepared. Introduce the 

 hot syrup gradually and cautiously, until the puncheon 

 is entirely full. Let it remain in contact for two hours, 

 and then turn the cock. The first portion of syrup that 

 comes away wdll contain minute particles of charcoal. It 

 should therefore be returned to the evaporating vessels. 

 Four puncheons so arranged will be required for an 

 ordinary boiling-house.^ 



