CANE SUGAR. 



upper edge is a hollow pipe I b, partly filled with mercury ; the juiee, first 

 of all, flows into the overhead receptacle d and thence discharges into 

 one compartment of the container a a; when a certain amount of juice 

 dependent on the quantity of mercury in b I has flowed in, the compartment 

 tilts and dumps its load. The juice now flows into the other compart- 

 ment, and when the same quantity has flowed in the same action again 

 takes place. Itiis necessary to calibrate the amount of juice discharged at each 



FIG. 268. 



dump by actual experiment ; a counter registers the number of dumps and a 

 sample of juice is taken at each dump from the cock g ; an arrangement of air- 

 cushion cylinders at c serves as a dashpot to prevent shock. 



Richardson Weigher. 1 This apparatus is shown in Fig. 269 ; it consists 

 of a strong iron frame, supporting the equal armed beam A ; to one end of the 

 beam is hung the weighing tank or hopper, , in which the liquid is carried, 

 and to the others is suspended the counter balance or weight box, C. 



494 



