HOWIETOUX. 



189 



A well was built of ashlar to one side of the dam and divided 

 into two compartments by a low wall. From each compartment 

 a spigot and faucet glazed pipe led the supply to the ponds, ra 



FIG. 139 scale -fa. 



10-inch to the small ponds, and a 12-inch to the new extension 

 (Fig. 139). A box, built of plank, and bolted together after the 

 fashion of a plank pond, passes from the water-trap along the end 

 of one compartment. A sluice of 2-inch plank (overflow) regulates 



FIG. 140 scale 



the supply to the other compartment, from which the 12-inch pipe 

 leads to the ponds ; and an opening is cut in the side of the plank 

 box to discharge on to a screen of zinc covering the compartment, 

 from which the 10-inch pipe leads to the 20-feet ponds (Fig. 140). 

 An opening was left in the well immediately over the mouth of 

 the 10-inch pipe, and flush with the zinc screen. This opening 



