Smithsonian Report, 1948.—Gabrielson PLATE 1 
EFRET 
gt te 
1. Forests were burned and cut to make way for the plow. 
Photograph by U.S. Forest Service. 
2. The productive soils with which this country was originally endowed were 
built by a complex process requiring vast stretches of geologic time. 
Photograph by Gabriel Moulin. 
