THE ST. JOHN'S RIVER, FLORIDA. 



151 



On the base, in association with human remains, as in fact were all relics from 

 the bottom of the mound, was a highly polished and carefully made "sinker" or 

 pendent ornament, rimmed at either end for suspension, having a length of about 

 2*5 inches and a maximum diameter of T3 inches (Fig 20). 



About 15 inches from the surface, grooved on one side as by the sharpening of 

 pointed tools, was a mass of stone, green in color, weighing 5*25 pounds. A por- 



Fig. 21. 



Fig. 23. 



Fig. 22. 

 "Sinkers " of shell, Tick Island. (Full size. i 



tion of this specimen submitted to Dr. E. Goldsmith, of the Academy of Natural 

 Sciences, was determined as follows : " I have to report that it is a fragraental rock, 

 and has nothing in common with green-stone or serpentine. This green rock has 

 frequently been termed jasper, merely on account of its hardness and finely granu- 

 lar texture ; but. in reality, it is a felsitic tuff cemented together by silica (when 

 in solution) which afterwards took, by metamorphic change, a crystalline structure," 



SHELL. 



In no mound of the St. John's have we found aboriginal art in shell so numer- 

 ously represented as in the sand mound at Tick Island. In immediate association, 

 ten feet from the surface, on the shell base, were four "celts" of shell ranging in 

 length from 2-3 to 3"8 inches. A portion of the largest was missing. With these 



