CIRCULAR bb-1. U. 5. DEP.VRTMEXT OF AGRICULTURE 



SCALE 

 25 FEE" 



\ FOREST 



Figure 2. — Lay-out of meadows studied on Ochoco National Forest. Invasion of 

 gopher-free area from the infested area was minimized by distance be: 

 gopher-free and gopher-infested plots, partial barrier afforded Crystal ( reek, 



and vearlv trapping and poise : 



