18 The American Naturalist. (January, 
Stone implements known as “ sinkers ” have never been met 
with by the writer other than superficially, though hones of 
sandstone with grooves worn by the friction of pointed tools 
were contemporary with the later heaps at least. Fig. 1 is 
from Turtle Mound,’ Brevard Co. 
(Actual size), 
Figure 3.—Arrow Head, Mt. Taylor. (Actual size). 
No!grooved axes are known to have been found on the river 
under any circumstances, 
*Not the great marine shell-heap near New Smyrna. 
