tobacco, an undetermined native plant, which was an article of trade all along the coast. Copper was not unknown to the native tribes on the Pacific coast, and rich supplies of the native metal appear to have been partially worked, by the tribes along the shores of Lake Superior from a remote date. The ancient mines have been disclosed, in the process of turning their resources to account by the enterprise of civilised settlers; and abundant evidence has been recovered to show that the native copper of the Keweenaw peninsula, Ontonagon, Isle Royale, and other points on Lake Superior, was worked extensively by its ancient miners, and undoubtedly formed a valuable object of traffic throughout the region watered by the Mississippi and its tributaries, and along the whole eastern routes to the seaboard. But, with the imperfect resources of the native miners, it was a costly rarity, procurable only in small quantities by barter with the tribes settled on the shores of Lake Superior. Axe blades, spear heads, knives, gorgets, armlets, tubes and beads, all fashioned out of the native copper solely with the hammer, have been recovered from ancient grave mounds and ossuaries in the valleys of the St Lawrence, the Hudson, the Ohio, the Mississippi, and their tributaries; and to the west of the Rocky Mountains, copper implements again occur manufactured from metal derived from some native source on the Pacific slope. The copper was, no doubt, recognised as a malleable rock, differing from all others in its ductility, so that it could be fashioned, with the aid of a hammer-stone, to any desired form. By this means the ancient miners of Lake Superior provided themselves with the most suitable tools for their mining operations, and were probably the manufacturers of most of the widely diffused copper implements. But for general purposes, both of industry and war, American man had to be content with the more abundant chert, hornstone, and quartzite.