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408 : CANNIBALISM. IN AMERICA. 
humerus, radius, tibia, ribs, tarsal and carpal bones and pha- 
langes. There are but few pieces of ribs, and but a single ver- 
tebra has been recognized. 
The different bones were artificially broken in a few cases only, 
and contrasted very strongly in this respect with those previously 
noticed. 
We have met with but a single other instance where human 
bones have shown signs of having been wrought by the aborigines. 
This was in the coast shell heap at Ipswich, Massachusetts, where 
Mr, Eliot Cabot discovered a human upper arm bone, which, as 
shown by the lines and marks on the surface had been ground or 
scraped. The nature of this instrument found is uncertain, as the 
end has been broken off. It is preserved in the Peabody Museum. 
10. At Huntoon Island, and in the rear of the shell mound on the 
St. John’s, are two conical mounds, and are supposed to be burial 
mounds, one fifteen and the other twenty-five feet high. Excava- 
tions carried to the depth of six feet, but arrested at this depth on 
account of our inability to get the necessary labor, did not, how- 
ever, reveal any evidence of burial in either of them. A collec- 
tion of human bones was obtained from the top of the larger of 
them at the depth of about a foot below the surface, which in all 
respects correspond with those previously described. They were 
scattered over an area of several square yards and belonged tof 
young individual as shown by the size of the bones and the condi- 
tion of the epiphyses. Each of the long bones was broken into 
two or more, and the skull into many, fragments. Pieces were 
found from all the principal divisions of the skeleton. There can 
be no doubt that the bones were intentionally broken, as the upper 
ends of two humeri show precisely similar marks of violence. In 
each case the'bone is broken off an inch below the head, by an 
instrument which crushed the bone, the fragments of which, flat- 
tened down, are retained in opposition, not having been originally 
completely separated. The bones are all incrusted with a calca- 
reous deposit, which in some cases cements the fragments, : 
others the smaller bones, as of the hands, together. Their condi- 
tion is similar to that of the bones from Bartram’s Mound already. i 
described. : 
The above are the chief instances of the presence of human ; 
remains in the shell mounds which have fallen under our notic®: 
They are not supposed to be the only ones which existed, for tbey 
