224 



CERTAIN SAND MOUNDS OF 



These fragments, submitted to Booth, Garrett and Blair, were reported as fol- 

 lows : — 



"Gold ..... None. 



Silver 

 Lead 

 Copper 

 Silicious matter 



0-013 per cent. 

 None. 

 75-050 per cent. 

 0-480 



75-543 



" This sample contained but a very little amount of copper in the form of 

 metal, the great mass being either oxide or carbonate. 



" Since we found no other metal present 1 in the sample than those given above, 

 we feel justified in saying that the original metal was nearly pure copper, over 99 

 per cent." 



To those who have examined or have read of the wonderful deposit of copper 

 ornaments, etc., in the Hopewell Mound, Ohio, the results of thorough analysis will 

 be of peculiar interest. We are indebted to Professor Putnam for " a fragment of 

 a 'breast-plate' hammered and cut, a fair representative of the copper of the 

 mound." 



This specimen was exhaustively examined by Ledoux and Company, who 

 write as follows : — 



" The piece of ornament from mound in Ohio submitted to us for analysis con- 

 tains : — 



"Copper ..... 96-3100 per cent. 

 Antimony .... 00070 " 



Silver ..... 0-0450 

 Nickel and cobalt . . 0*0060 " 



" Note : The sample was carefully examined for arsenic, tin, lead, bismuth, 

 and zinc, none of which is present. This analysis was made by removing adhering 

 oxides and carbonates as far as possible, but the sample contained sand adhering to 

 if and penetrating it to such an extent that it was impossible to remove it all. 

 This accounts for the low percentage of copper; the metal would have undoubtedly 

 run over gg per cent'. 1 if freed from mechanical impurities and oxygen." 



Warren K. Moorehead, Esq., has kindly furnished us with an implement of 

 copper from an Ohio mound which yielded to a partial analysis by Booth, Garrett 

 and Blair : — 



"Gold . . . .' . None. 



Silver 

 Lead 

 Bismuth 

 Copper 



In this case no search was made for other elements. 



0011 per cent. 

 None. 

 None. 

 99-678 per cent." 



1 The italics are ours. 



2 The italics are ours. 



