I have already said so much as to the convenience and excellence of the limestone beds associated with the magnetic ores, that I will only allude to them here as constituting the great resource for furnace-flux, for building-stone, for lime, and for monumental and ornamental marble. This will be an important item for transportation. The granite, also, will be wanted for building, and for paving blocks. There are, no doubt, quartzites, sandstones and slates which will be in request; some for the supply of silica needed for tempering fire-clay (which latter is reported to have been found on Cedar River in large quantity and of good quality); some for road metal; some for paving; some for building. [Sidenote: Precious and base metals.] In this group, however, the great resource is in the ores of the precious and base metals, which have been fully described under a former head. Too little is known of the silver and lead and gold ores of the Snoqualmie Valley to lay much stress upon them. The indications do not justify us in ranking them with the ores of the Columbia Valley. The gold placer mining of the Yakima country makes no large show so far. The silver, lead and copper ores, described by Mr. Burch, may develop largely, but as yet no calculations can be made as to their value in supplying tonnage. This field ranks with the Wenatchie, Chelan, and Methow regions, being undeveloped, and yet so full of promise as to deserve careful attention. [Sidenote: Okinagane, Colville and Kootenai.] The mines of the Okinagane and Colville regions promise large results. All this mineral region, up to and including the Okinagane, lies fairly within the patronage ground of the Seattle Railway as it pursues its course to Spokane Falls. The Colville and Coeur d'Alene, to which may now be added the Kootenai, mining regions, constitute a large area lying north and east of Spokane Falls, and offer themselves as possible routes for the Manitoba Railway, but chiefly as tempting fields for railroad enterprises. The city of Spokane Falls is deeply interested in bringing in the trade of these growing mines, and the Seattle Railway corporation may wisely consider the prizes here offered. [Sidenote: Coeur d'Alene.] [Sidenote: Transportation lines to the mining regions.] Railroad building has begun in the Coeur d'Alene country. The Coeur d'Alene Railway and Navigation Company have constructed a narrow-gauge road from the Old Mission, near the junction of the north and south forks of the Coeur d'Alene River, a distance of about thirty-five miles. The tonnage is said to be much greater than this narrow-gauge can handle at present.