The Pocket Gopher. 



145 



A trap gun so arranged as to be discharged by the act of the 

 gopher in pushing against an obstruction in his burrow has 

 been recommended by at least two of the experiment stations. 

 The objection to this recommendation lies in the first cost of 

 the mechanism and the amount of time required to visit and 

 reset the gun each time it has been discharged. 



Fjg.3. 



Pur. 4 



Fie. 5. 



Fig. 6. 



Fig. 1, Newhouse gopher trap. Fig. 2, Out O' Sight gopher trap. Fig. 3, Cali- 

 fornia gopher trap. Fig. 4, Newhouse trap as modified for use at this Station 

 Fig 5, steel trap No. 0. Fig. 6, the steel jump trap. 



