GROUND SQUIRRELS 



423 



A field to be planted in corn may be freed from gophers by the 

 use of poison once or twice before corn-planting time. Seed corn 



Fia. 409. Gray ground squirrel or "gray gopher," C. franklinii. (After Merriam, 



U. S. D. A.) 



FIG. 410. Another species of ground squirrel, C. richarditonii. (After Merriam, U. S. D. A.) 



can be protected from their attack by various means. Soak corn 

 in the strychnine solution mentioned above. Dry this and dis- 

 tribute it over the infested area. If gophers have not disappeared 



