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PROCEEDINGS OF SCIENTIFIC: SOCIETIES: 387 
by Agassiz at 10,000 years. 10. Fire-hearths, found by C. Whittlesey, in 
the ancient alluvium of the Ohio, at Portsmouth, Ohio, at a depth of 
twenty feet, and beneath the works of the mound builders. 11. Skeletons 
of Indians, reported by Dr. Dowler, of New Orleans, at a depth of sixteen 
feet in the alluvium, estimated by him at 50,000 years; by others as low 
4815,000. 12. Portion of a pelvic bone of man, at Natchez, Miss., associa- 
ted with the mastodon, megalonynx, and horse, supposed to be in the 
loess, but of doubtful authority. 13. Human skull and other relics, Cala- 
yeras county, California, at a depth of 150 feet in superficial materials, 
iy aie gold; reported by Professor J. D. Whitney. 
n the discussion on the Antiquity of Man, Mr. J. W. FOSTER assigned 
the ancient Peruvians to the Bronze age, attributing to them a commer- 
cial intercourse with foreign lands; copper instruments having been dis- 
covered which may have come from the Copper Mines of Lake Superior, 
and ica, which may have been brought from New England. He also 
mentioned that the mound builders wove cloth spun with an uniform 
oof. 
Professor W. P. BLake stated that the evidences of an ancient race were 
frequent in California. The miners in sluicing the beds of the ancient 
Streams find frequently spear and arrow-heads of stone, which testify to 
the skill of siea umanity, as well as that pesii are not the work of a race now 
known. A ong the first of these evidences discovered, were some human 
forced upon him, by an examination, that it was really a portion of a 
skull, as it was said, and that it had for ages, perhaps, rolled in the drift. 
tone implements are found in various ioe of the State, bat more fre- 
wil 
i 
With ashes, Aj n covered wi 
valley aca. and at last all had na sat od ind semmi- 
