FLUSH TANKS. 61 



is required for connecting it with the line of outlet pipes, 

 and provided with a movable cover for access to the 

 mouth of the siphon. This " discharging trough " is 

 an important feature in the tank, as it is of a peculiar 

 shape, which, by checking the outflow of the liquid from 

 the mouth of the siphon, enables a smaller quantity of 

 liquid flowing into the tank to fill the bend of the siphon 

 and set it fully in action. 



In regard to the operation of this tank, and the drains 

 connected with it, Mr. Geo. E. Waring, of Newport, K. L, 

 writes as follows in the American Agriculturist of Janu- 

 ary, 1876: " I have found that in less than two minutes, 

 about two-thirds of a barrel of liquid, (already accumu- 

 lated in the tank), flows through the drain in a cleansing 

 stream, which an examination shows to have left no refuse 

 matters in its course. This tank is not yet made in 

 America, and owing to its size and the cost of importing 

 it, it is not likely that it will for the present come largely 

 into use. In the meantime, the inventor has taken no 

 patent in this country, and the invention is open to the 

 use of all who choose to adopt it. 



" The accompanying illustrations show how a perfectly 

 efficient flush-tank may be made from a kerosene or other 

 tight barrel without much expense. The barrel must be 

 a sound one, with its bung well secured, and both of its 

 heads in good order. Cut a circular hole in the upper 

 head, twelve inches in diameter. Half way between the 

 side of this hole and the chime, make another hole two 

 inches in diameter. Finish the larger hole with an edg- 

 ing made of lead or copper, lapping over about an inch, 

 and being securely nailed fast in a bed of white lead. 

 This metal should be beaten in a groove or gutter just 

 inside of the large opening, having its edge turned up at 

 a distance of one inch from the edge of the hole. The 

 head will then have an opening ten inches in diameter, 

 surrounded by a channel three-fourths of an inch, or an 



