26 ON THE FRESH-WATER GLACIAL DRIFT 



Fig. 9. 



h, b, 6.— Same in 1796. 

 c, c, c. — Lagoons, old bed of 

 Rirer. 



'^ . — Springs. 



E, E, E. — Clay Bluffs with 

 Slides, ancient and recent, 70 

 feet high. 



<?.— Outlier of the Clay Bluffs 



E, E. 



[®1 - — Perry Monument. 



F, F.— Ultimate line of Shore 

 unless protected. 



Map showing the rate of the encroachments of Lake Erie at Cleveland, Ohio. 

 Fig. 10. 



Profile along Bank Street, Cleveland, Ohio, representing the slides of October, 1849. A. Ancient shore line. 

 C C C. Present shore line and slides, 1849. B B B. Blue laminated clay. D. Coarse sand and gravel. E. Alter- 

 nate bands of clay and sand. 1. Position of cedar trees, leaves and springs. 2. Position of Elephant's grinder. 



