PLATE 13 
A. —Seepweed land illustrating an area where “seep” or water heavily 'charged 
with salt has come to the surface and incrusted an old plant of seepweed. Ther* 
mal, Calif., March 5, 1915. 
B. —Revegetation on seepweed land, a dense growth of young ?seepweed 
plants following breaking, and, in the background, sand dunes covered, ^with 
mesquite. Indio, Calif., March 7, 1915. 
