| Dogs on leash and tin cans rattling in the wind are some
of the primitive methods employed by Indians in futile
attempt to save crops from ravages of prairie dogs in the Southwest. |
Indian cornfield totally destroyed by prairie dogs.
| Cotton and corn fields damaged by prairie dogs in northwest Texas. |
Side of basin denuded by prairie dogs—devastation being rapidly completed by erosion. Cochetopa Forest, Colorado.
| Prairie dogs prepare an ideal condition for the start of sheet
erosion on hillsides by denudation of vegetative cover. Note lack of
vegetation. Erosion once started is accelerated by other factors as
shown on [page 11]. |