We see an immense structure, resembling a railway bridge, built out into the harbor. It is several hundred feet in length, and twenty or more in height. A train of cars comes thundering down a grade, and out upon the bridge, while men running from car to car knock out here and there a bolt or lift a catch, and we hear a rumbling and thundering, and feel the wharf tremble beneath our feet. It is not an earthquake; they are only unloading iron ore from the cars into bins. A man by means of machinery raises a trap-door, and the black mass, starting with a rush, thunders once more as it plunges into the hold of a schooner. It requires but a few minutes to take in a cargo. And then, shaking out her sails, the schooner shapes her course eastward along the "Pictured Rocks" for the St. Mary's Canal, bound for Cleveland, Erie, or Chicago with her freight of crude ore to be smelted and rolled where coal is near at hand. The town is well laid out. Although the business portion was destroyed by fire not many months ago, it has been rebuilt. There are elegant residences, churches, school-houses, and stores. Men walk the streets as if they had a little more business on hand than they could well attend to. The men who used to frequent this region to trade with the Indians knew as early as 1830 that iron existed in the hills. But it was not till 1845, just a quarter of a century ago, that any attempt was made to test the ore. Dr. Jackson, of Boston, who visited Lake Superior in 1844, pronounced it of excellent quality. He informed Mr. Lyman Pray, of Charlestown, Mass., of its existence, and that the Indians reported a "mountain" of it not far from Marquette. Mr. Pray at once started on an exploring expedition, reached Lake Superior, obtained an Indian guide, penetrated the forest, and found the hills filled with ore. About the same time a gentleman named Everett obtained half a ton of it, which the Indians and half-breeds carried on their backs to the Carp River, and transported it to the lake in canoes. It was smelted, but was so different from that of Pennsylvania that the iron-masters shook their heads. Some declared that it was of no particular value, others that it could not be worked. The Pittsburg iron-men pronounced it worthless. But Mr. Everett persevered, sent a small quantity to the Coldwater forge, where it was smelted and rolled into a bar, from which he made a knife-blade, and was convinced that the metal was superior in quality to any other deposit in the country. The Jackson Company was at once formed for mining in the iron and copper region. The copper fever was at its height, and the company was organized with a view of working both metals if thought advisable. A forge was erected on the Carp River in 1847, making four blooms a day, each about four feet long and eight inches thick.