FEEDING AND WATERINr,. 



37 



FIG. I. 



The most economical troughs are those made from plank. 

 Use pine plank two inches thick. The plank must contain 

 no knots or wind shakes, nor large cracks. The excellence 

 of this sort of a trough especially depends upon the way in 

 which it is made. Two drawings 

 will show best and quickest the right 

 and the wrong way. Letting one part 

 into another makes the trough tighter, 

 and if let in as shown in Fig. I, 

 and not as shown in Fig. 2, the 

 trough will be made much stronger 

 and more durable. The bottom is 

 let into the sides also. Smooth the 

 edges to be let in. Lay them against the plank to be 

 grooved, make a mark close to each edge, and then savsr 

 just a little inside of each mark, so the groove is a little 

 narrower than the edge to be fitted in it. Saw a long quarter 

 of an inch deep and then chip out the wood with a chisel, 

 making the groove of the same depth throughout. Paint the 

 groove and edge with thick paint 

 brown mineral paint is cheapest and 

 best before they are put together. 

 As Fig. I does not show the end piece 

 let into the bottom, the reader is safe 

 in concluding that the better way is 

 to let the end of the bottom into the 

 end piece. The bolts should be of FIG 2 , 



iron, one-half inch in diameter. With 



the grooves they will hold the trough well together, and no- 

 nails should be used. Such a trough is durable. Bore a 

 hole in the bottom of every trough and fit it with a hard- 

 wood plug. Then the water can be let out of freezing 

 nights. If a stout tarred string is tied to the end of the 



