SUGAR BOILING AND CRYSTALLIZATION-IN-MOTION 399 



or exhaust being used at uiU ; the connection for the latter is not shovvn^in 

 the sketch. To permit of circulation, ample clearance is allowed between 



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the coils, and a circulating well is provided in the centre of the pan, down 

 which passes the feed pipe introducing the material to the lower portion of 

 the pan. Pans of the design shown have usuallj^ one sq. ft. heating surface 

 for each cu. ft. of capacity. 



