1 1 8 Barn Construction. 



flow, which dischargfes into a two-inch drain pipe. 

 The water is left running until the cows are through 

 drinking. Then it is shut off and the hollow plug is 

 removed ; this empties the trough. This overflow is 

 at the same end as the supply faucet. When the 

 trough is emptied, it is turned over until again re- 

 quired. One trough to every four or five cows is 

 about as long as can be conveniently managed. 

 (The hinges should be of galvanized iron.) Of 

 course, this requires a little more labor than where 

 each cow has a separate trough that is full all the 

 time, but there is a great objection against that 

 method of watering cattle. There is as much bene- 

 fit to be derived by having a drink of pure, fresh 

 running water when wanted, as there is in having 

 pure, fresh air to breathe. It is not a mere ques^ 

 tion of slaking thirst in the one case, or the filling 

 the lungs with air in the other. It is the freshness 

 of both that stimulates. 



If it is considered advisable to use individual 

 water buckets, the following system of piping is 

 advised, as shown on page 1 19. D is the inlet pipe 

 from spring or tank; the valve E, which is gov- 

 erned by a float F, that shuts off the water when 

 the receiving tank is full. To water the cows 

 close valve B 2 and open valve A A. Every in- 

 dividual bucket bb will thus be filled to a level 

 with the water in the receiving tank //, which is 

 automatically shut off as soon as all the buckets 

 which are set on the same level are full. When 

 the cattle are through drinking, close valve AA 



