PLATE VII 



FIG. 1. A meandering stream. The Mis- FIG. 2. A stage in the develop- 

 souri River. Scale, about 2 miles per ment of a meander. Schell 

 inch. (Marshall, Mo., Sheet, U. S. Geol. River. Scale, about 2 miles 

 Surv.) per inch. ( Butler, Mo., Sheet, 



U. S. Geol. Surv.) 



FIG. 3. A plain in old a^c. Scale, about 2 miles per inch. Contour in- 

 terval, 50 feet. (Abilene, Kan., Sheet, U. S. Geol. Surv.) 



