488 



JOHN LYON RICH 



Fig. 8. — Part of the Oberlin (Ohio) topographic sheet, showing a meandering 

 stream of the intrenched type in two different stages of development in different parts 

 of its course. At Elyria it is in the earHest stage of intrenchment; farther down, 

 grade has been reached and sweep is clearing out the valley. 



