Such was the state of public information on this point in 1820. A veil of obscurity was still cast about the actual source of the Mississippi, which there was no further attempt to remove for ten or eleven years. In 1830, the writer of these sheets was directed to proceed into the Chippewa country, north-west of Lake Superior, in the execution of duties connected with Indian affairs. But the instructions were received so late in the season, that their execution became impracticable until the next year. In the mean time, means for more extensive observation were provided, a physician and botanist engaged, and a small detachment of troops, under the command of a subaltern, ordered to form a part of the expedition. This expedition numbering twenty-seven persons, exclusive of guides and Indian auxiliaries, employed on the portages, left St. Mary’s at the foot of Lake Superior, late in June 1831. After entering, and coursing around the shores of Lake Superior to Lapointe, it was found, from every representation, that the low state of the water on the Upper Mississippi, would render it difficult, if not impracticable, to reach the bands at its sources, during the drought of summer. Public reasons were, at the same time, urgent for visiting the interior bands, located between the group of islands at the head of Lake Superior, and the Mississippi—where a useless and harassing conflict was kept up between the Sioux and Chippewa nations. The expedition returned eight miles on its track, and entered the mouth of Mushkigo, or Mauvais river of Lake Superior. This stream, which carries down the waters of an extensive slope of highlands, is embarrassed with permanent rafts of flood wood, and with numerous rapids, presenting an arduous ascent. The axe, the canoe-pole, and the carrying-strap, were alternately employed in the ascent, and they were employed under the influence of the midsummer’s heat, and the annoyance of the hordes of smaller insects, who are on the wing, in this secluded valley, during the greater part of the twenty-four hours. This stream was ascended one hundred and four miles, to the portage. The goods and canoes were then carried 8¾ miles, across highlands, to a lake called Kaginógumoc, or the Longwater; and thence by four separate portages, and three intervening lakes, to the Namakágon river. The latter was descended one hundred and sixty-one miles, to its junction with the St. Croix, of which it is the right fork, and the channel of the latter pursued to Yellow River. From this point, where a public council was convened, the expedition re-ascended the Namakágon to the portage into _lac Courtorielle_, or Ottawa Lake. This portage consists of a carrying place of three miles and a lake, then another carrying place of 750 yards and a lake, from the latter of which there is a navigable outlet into the Ottawa for canoes.