HOWIETOUN DIVIDING-BOX. 



221 



Next in position is the dividing-box, which collects the water 

 from the 20-feets, and from the 60-feet, and mixes it with a fresh 

 supply from the main aqueduct. This box is built of 3-inch 

 plank ; it is rectangular, and divided into several compartments. 

 In the first the pipes from the 20-feets and from the main aqueduct 

 came in opposite each other, so as to mix and aerate the water, 

 while the outlet spout from the 60-feet discharged into the same 

 compartment through a cut in the end, thus completely mingling 



FIG. 152 scale -fa. 



the whole three sources of supply (Fig. 152). A division of l|-inch 

 wood slid in a groove from the top of the dividing-box to within 

 a few inches of the bottom, forming the first compartment. The 

 second compartment was formed in the same way, a square cut being 



