134 TRANSACTIONS OF THE WAGNER FREE 



the mouth of these streams a bed of ferruginous sandstone has been 

 formed, the largest being about 100 yards in extent along the bay. The 

 iron oxide, cementing the sandstone, undoubtedly was supplied by the 

 fresh-water streams. In this bed are found abundantly many species of 

 shells, such as are now found living in the Gulf of Mexico, one mile 

 distant from this locality. These shells are in good condition, indicating 

 only a small amount of erosion. More than twenty fragments of Indian 

 pottery were found in this bed during a late visit to it, some pieces being 

 nearly as large as a man's hand, and rudely ornamented. Vertebrae and 

 teeth of sharks also abound in this sandstone, also many fragments of 

 manatee bones ; the latter were, however, all eroded into smooth, oval 

 forms before they were enveloped in the sandstone." 



Mr. Willcox also furnishes the following approximate section of the 

 North Creek exposure, to which reference is made in the report : 



Sand (3 feet). 



Hard limestone rock (2 feet). 



Sand and calcareous marl (6 to 7 feet) containing shells, which are 

 most abundant near the water-level. 



Water-level. 

 The shell deposit, in all probability, belongs to the Pliocene period. 



