POISONING AND TRAPPING 307 



traps, simple wire traps of the guillotine order, 

 in which mice are instantly killed, are the 

 most effective. 



Traps without bait may be set across the 

 runs of the mice, where the animals spring 

 them by coming in contact with the trigger, 

 or they may be baited with oat or corn meal. 



METHOD OF CONSTRUCTING A TIP-UP TRAP WITH A BOX. 



For trapping pine mice an opening should be 

 made in the underground tunnel large enough 

 to receive the trap, which should be set across 

 the bottom of the runway. The traps may be 

 baited or not, but the opening should be cov- 

 ered. 



Traps for gophers. Trapping is a success- 

 ful method when followed intelligently and 

 persistently. It is especially adapted to small 



