302 E. H. SELLARDS 



loo-fathom contour as the margin it will be found that scarcely 

 one-half of the plateau is above water, and that the greater part of 

 that which is above water lies to the east of the north-south axis. 

 With regard to elevation the plateau is therefore asymmetrical, the 

 eastern half being higher, mostly above sea-level, than the western 

 half, which is almost wholly submerged. This lack of symmetry is 

 apparently due in particular to a tilting or warping of the peninsula 

 toward the west, by which the coast of west Florida has been 

 depressed as far south as Hernando County, while the east coast, 

 including all of the southern tip of the peninsula, has been slightly 

 elevated. 



