Maine; agricultural KXPERiAiiiNT station. 



75 



beech strip is nailed to the top of a board 4 inches wide, which 

 forms the front of the nest box proper. To the bottom of this 

 is nailed a strip 2 inches wide, into which are set two 4-inch 

 spikes from which the heads have been cut (compare fig. 19). 

 The treadle rests on these spikes when the nest is closed. The 

 hinges used in fastening the treadle and door are narrow 3-inch 

 galvanized butts with brass pins, made to work very easily. It 

 is necessary to use hinges which will not rust. 



Fig. 18. Trap nest closed. View from above. 



The manner in which the nest operates will be cleared from 

 an examination of figures. 19 and 20, which show a sample nest 

 with one side removed to show the inside. A hen about to lay 

 steps up on the door and walks in toward the dark back of the 



