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132 THOMPSON'S COAST PILOT: miles in length. This section of country for upwards of one hundred miles, running from southwest to northeast, abounds in silver and copper ores, yielding immense quantities of the latter; much of it _ being pure native copper, but often in such large masses as to ren- der it almost impossible to be separated for the purpose of transpor- tation. Masses weighing from 1,000 to 5,000 pounds are often sent forward to the eastern markets. The geological formation is very interesting, producing specimens of rare beauty and much value. Manrrov Isanp lies off Keweenaw Point, on which is alight~ -- house to guide the mariner to and from Copper Harbor. 'The island is about seven miles in length and four wide. Correr Harsor, Michigan, is situated near the extreme end of Keweenaw Point, in north latitude 47° 30' , west longitude 88° 00/; the harbor, although somewhat difficult to enter, is one of the best on Lake Superior, being distant 250 miles from the Sault Ste. Marie. The settlement contains about 200 inhabitants, a church, a hotel, and two or three stores. Fort Wilkins, formerly an U. 8. military post, has been converted into a hotel, being handsomely situated on Lake Fanny Hoe, about half a mile distant from the steamboat landing. In the vicinity are copper mines which have been exten- sively worked, and are well worthy of a visit. , Acats Harpor, 84 miles west of Copper Harbor, is the name of asmall settlement. This port is not as yet much frequented by steamers. ; Kacie Harsor, fourteen miles west of Copper Harbor, is a good steamboat landing. Here are two churches, a good public house, together with several stores and storehouses. Population about 700, being mostly engaged in mining. The Central, Copper, 'Falls, Pennsylvania, and Amygdaloid, are the principal working copper mines. Kactz River, harbor and village, seven. miles further, are favorably situated at the mouth of a stream of the same name. Here are two churches, a well kept hotel, four stores and several storehouses. Population, 800. This is a thriving settlement, it being the outport of the celebrated Cliff, or Pittsburgh and Boston, and other mines. The copper found in this vicinity is of: the purest quality, where is found silver in small quantities, some of the speci-