20 The American Naturalist. [January, 
1893. This object, the only one of polished stone known to 
belong to the epoch of the shell-heaps of the St. John’s, was 
found at a depth of 4} feet from the surface in Mulberry 
Mound, Orange County, which is believed to be one of the very 
latest shell-heaps of the river. 
Figure 7.—Arrow Head, Bryson’s Mound. (Actual size). 
