It stands before me now, clear-cut and prominent, its outlines distinct against the background of blue water or green plains. In that early day the Fort was a fairly typical outpost of the border, like scores of others scattered at wide and irregular intervals from the Carolina mountains upon the south to the joining of the great lakes at the north, forming one link in the thin chain of frontier fortifications against Indian treachery and outbreak. It bore the distinction, among the others, of being the most advanced and exposed of all, and its small garrison was utterly isolated and alone, a forlorn hope in the heart of the great wilderness. The Fort had been erected nine years before our arrival, upon the southern bank of a dull and sluggish stream, emptying into the Great Lake from the west, and known to the earlier French explorers as the river Chicagou. The spot selected was nearly that where an old-time French trading-post had stood, although the latter had been deserted for so long that no remnant of it yet lingered when the Americans first took possession, and its site remained only as a vague tradition of those Indian tribes whose representatives often visited these waters. The earliest force despatched by the government to this frontier post erected here a simple stockade of logs. These were placed standing on end, firmly planted in the ground and extending upward some fifteen feet, their tops sharpened as an additional protection against savage assailants. This log stockade was built quite solid, save for one main entrance, facing to the south and secured by a heavy, iron-studded gate, with a subterranean or sunken passage leading out beneath the north wall to the river, protected by a door which could be raised only from within. The enclosure thus formed was sufficiently large to contain a somewhat restricted parade-ground, about which were grouped the necessary buildings of the garrison, the quarters for the officers, the soldiers' barracks, the commandant's office, the guard-house, and the magazine. These rude structures were built in frontier style, of cleaved logs, and with one exception were but a single story in height, so that their roofs of rived shingles were well below the protection of the palisade of logs. Besides these interior buildings, two block-houses were built, each constructed so that the second story overhung the first, one of them standing at the southeast and one at the northwest corner of the palisaded walls. A narrow wooden support, or walk, accessible only from one or the other of these block-houses, enabled its defenders to stand within the enclosure and look out over the row of sharpened logs. At the time of our arrival the protective armament of this primitive Fort, besides the small-arms of the garrison, consisted of three pieces of light artillery, brass six-pounders of antique pattern, relics of the Revolution. Outside the Fort enclosure, only a few yards to the west along the river