THE ST. JOHN'S RIVER, FLORIDA. 223 



" The sample was specially examined for antimony, tin, lead, bismuth, and 

 zinc, none of which was found present. 



" The above figures are on the basis of the sample as received." 



The metal used in this analysis was so altered that we must not regard the 

 result as quantitative in relation to the copper as it originally existed. It is sub- 

 mitted as a qualitative analysis to show presence or absence of certain elements. 



We have referred in another portion of this report to the discovery of articles 

 of copper in the great Grant Mound, near Mill Cove, Duval Co., Florida. These 

 objects, all in good state of preservation, we were unwilling to sacrifice for purposes 

 of analysis, and are, therefore, doubly grateful to Mrs. Martha A. Millspaugh, 

 whose* residence is near the foot of the mound, for a piercing implement of copper, 

 8 - 25 inches long and 12 of an inch in thickness, apparently made from a strip of 

 thick sheet copper, and a fragment of another piercing implement 4 inches in 

 length, with a thickness of -2 of an inch, made, as the reader will recall, from 

 numerous thin sheets of copper closely hammered together. These objects were 

 taken from the mound by a relative of Mrs. Millspaugh. 



According to the analyses of Ledoux and Company the metal of these objects 

 had the following composition : — 



" Fragment of piercing implement of sheet copper, Grant Mound, Florida. 

 [The larger specimen.] 



"Copper ..... 99-730 per cent. 

 Iron ..... 0034 



Silver ....... 0-023 



" Note : The sample was examined for lead, bismuth, arsenic, antimony, nickel, 

 cobalt, none of which was present. 



"The sample also contains some oxygen, as it was impossible to entirely re- 

 move the oxide of copper from the surface of the sample. This oxygen is due to 

 superficial oxidation, and is not an essential ingredient of the metal." 



" Fragment of smaller piercing implement from Grant Mound, Florida. 



"Copper ..... 99720 per cent. 

 Iron ..... 0-044 



Silver ..... 0-015 



" Note : The sample was examined for lead, bismuth, arsenic, antimony, nickel, 

 cobalt, none of which was present. 



" The sample also contained some oxygen, as it was impossible to entirely re- 

 move the oxide of copper from the surface of the sample. This oxygen is due to 

 superficial oxidation, and is not an essential ingredient of the metal." 



We have thought it well to include with these analyses, for comparison, results 

 obtained from copper from mounds other than of Florida. 



We are indebted to Thomas Wilson, Esq., of the National Museum, for a num- 

 ber of fragments of sheet copper " from grave A, Little Etowah Mound, Georgia." 



28 JOURN. A. N. S. PHILA., VOL. X. 



