The Hatching Apparatus. 



lead, nailed up tightly, and pitched inside and out ; 

 but even with all these precautions they often 

 leak. Before being pitched, however, the spouts 

 must be fitted ; these consist of pieces of f-inch 

 lead pipe, about five inches long, tapered down at 

 one end with a penknife, and slightly bent along 

 their whole length. A hole is then bored with a 

 stock and bit, the centre of which should be 

 about three inches from the bottom of the inside 

 of the box, and the pipe must be screwed and 

 pressed into the hole until a small portion pro- 

 trudes into the box ; this is to be flattened out 

 around the edge of the hole so as to form a sort of 

 rivet to hold the spout in position, and to prevent 

 leakage. These boxes may obviously be made 

 of any size four and a half inches is a convenient 

 height and the length and breadth may be ar- 

 ranged to suit the requirements of the building. 

 They are, however, so liable to leak, or what is 

 technically called " sweat," that they are not 

 recommended. 



