Note 22 — Chapter IV · TRANSACTIONS AMONGST THE NATIVES OF NORTH AMERICA; DISCOVERIES ALONG THAT COAST AND THE EASTERN EXTREMITY OF ASIA, NORTHWARD TO ICY CAPE; AND RETURN SOUTHWARD TO THE SANDWICH ISLANDS. (continued 4)
Reading edition
Footnote 22:
(return)
Very probably the stone that gave a green colour was an ore of copper; but the scanty description renders it difficult to ascertain the species. The other, which is said to have given a purple colour, may also have contained the same metal.—E.