98 NORTHERN SUGAR INDUSTRY. 



The juice should be cold, and the tube delivering the gas (lead or 

 copper) end in an expanded nozzle covered with a plate of fine holes. 



In some cases the tank is furnished with a copper coil perforated with 

 small holes. A more even distribution of the gas throughout the 

 liquid is thus obtained. 



If the gas is formed by burning sulphur it is pumped first through a 

 wash-bottle and then into the tank. 



(2.) The juice may be mixed with the gas in a sulphur box. 



The sulphur box may be used in two ways. 



(a) A tight box (Fig. 9) is constructed of a size proportionate to 



JUICE 



Fig. 9. 



the quantity of juices to be sulphurized. For a mill grinding 25 tons 

 of cane per day the box should be 8 feet high and 3 feet square. 

 Shelves with fine perforations are attached alternately to opposite 

 sides of the box. They are set so as to facilitate the flow of the liquid 



