EVAPORATION 351 



1892 ; 491659, 1893 ; 521215, 1894 ; and a number of other patents dealing 

 with details. 



FIG. 199 



As originally proposed, the Lillie model was a vertical tube apparatus, 

 with juice distributed as a film on the interior of the tubes. In the form in 



FIG. 200 



which it has become widely used in the cane sugar industry, horizontal tubes 

 are employed, on the exterior of which is distributed a film of material. 



