Silver, also, has been reported at Sitka by the same Russian engineer who reported iron, and, like the iron, in “sufficient quantity to pay for the working.” Lead was reported by the Russian explorer, Lieutenant Zagoyskin, on the lower part of the Kwichpak; but it is not known to what extent it exists. Copper is found on the banks of the Copper River, called by the Russians the Mjednaja, meaning copper, and of its affluent, the Tchetchitno, in masses sometimes as large as forty pounds. Of this there can be little doubt. It is mentioned by Golowin, in the “Archiv” of Erman, as late as 1863. Undoubtedly from this neighborhood was obtained the copper which arrested the attention of the early navigators. Traces of copper are found in other places on the coast; also in the mountains near the Yukon, where the Indians use it for arrow-heads. Coal seems to exist all along the coast,--according to Golowin, “everywhere, in greater or less quantity.” Traces are reported on the islands of the Sitkan archipelago; and this is extremely probable, for it has been worked successfully on Vancouver’s Island below. It is also found on the Kenaian peninsula, Alaska, the island of Unga, belonging to the Shumagin group, Oonalaska, and far to the north at Cape Beaufort. At this last place it is “slaty, burning with a pure flame and rapid consumption,” and it is supposed that there are extensive beds in the neighborhood better in quality. For an account of this coal I refer to the scientific illustrations of Beechey’s Voyage. The natives also report coal in the interior on the Kwichpak. The coal of Oonalaska, and probably of Alaska, is tertiary, and not adapted for steamers. With regard to that of Unga scientific authorities are divided. That of the Kenaian peninsula is the best and the most extensive. It is found on the eastern side of Cook’s Inlet, half way between Cape Anchor and the Russian settlement of St. Nicholas, in veins three quarters of a yard or more in thickness, and ranging in quality from mere carboniferous wood to anthracite. According to one authority, these coal veins extend and spread far into the interior. This coal has more than once been sent to California for trial, and was there pronounced a good article. Since then it has been mined by the Company, not only for their own uses, but also for export to California. In making these statements, I rely particularly upon Golowin, in the “Archiv” of Erman, and upon the elaborate work of Grewingk, in the “Transactions of the Mineralogical Society of St. Petersburg” for 1848 and 1849,[142] where is a special map of the Kenaian peninsula.