Having followed out this branch of the Mississippi to its source, it may be observed, that its existence, as a separate river, has hitherto been unknown in our geography. None of the maps indicate the ultimate separation of the Mississippi, above Cass Lake, into two forks. Little surprise should therefore be manifested that the latitude of the head of this stream, is found to be incorrect. It was not however to be expected that the inaccuracy should be so great as to place the actual source, an entire degree south of the supposed point. Such however is the conclusion established by present observations.
The portage from the east to the west branch of the river, is estimated to be six miles. Beginning in a marsh, it soon rises into a little elevation of white cedar wood, then plunges into the intricacies of a swamp matted with fallen trees, obscured with moss. From this, the path emerges upon dry ground. It soon ascends an elevation of oceanic sand, having boulders, and bearing pines. There is then another descent, and another elevation. In short, the traveller now finds himself crossing a series of deluvial sand ridges, which form the height of land between the Mississippi Valley and Red River. This ridge, is locally denominated Hauteur des Terres where it is crossed in passing from Lac Plaie to Ottertail Lake, from which point it proceeds northward, separating the tributaries of the River des Corbeau from those of Red River. It finally subtends both branches of the Mississippi, putting out a spur between the east and west fork, which intersects the portage, crosses the west or Itascan fork about the point of the Kakábikonce, or Little Rock Falls, and joining the main ridge, passes northeastwardly of Lac Travers and Turtle Lake, and is again encountered in the noted portage path from Turtle Lake to Red Lake. It is, in fine, the table land between the waters of Hudson’s Bay and the Mexican Gulf. It also gives rise to the remotest tributaries of the river St. Louis, which, through Lake Superior and its connecting chain, may be considered as furnishing the head waters of the St. Lawrence. This table land, is probably, the highest in North-western America, in this longitude.
In crossing this highland, our Indian guide, Oza Windib, led the way, carrying one of the canoes, as his portion of the burden. The others followed, some bearing canoes, and others baggage. The whole party were arranged in Indian file, and marched rapidly a distance—then put down their burthens a few moments, and again pressed forward. Each of these stops is called a posè by the voyageurs, and is denominated Opugid-jiwunon, or a place of putting down the burthen, by the Indians. Thirteen of these rests, are deemed the length of the portage. The path is rather blind, and requires the precision of an Indian eye to detect it. Even the guide was sometimes at a loss, and went forward to explore. We passed a small lake occupying a vale, about midway of the portage, in canoes. The route beyond it, was more obstructed with underbrush. To avoid this, we waded through the margins of a couple of ponds, near which we observed old camp poles, indicating former journies by the Indians.
The weather was warm and not favorable to much activity in bird or beast. We saw one or two species of the falco, and the common pigeon, which extends its migrations over the continent. Tracks of deer were numerous, but travelling without the precaution required in hunting, we had no opportunity of seeing this animal on the high grounds. It was observed in the valleys of the river, on both branches. Ripe straw berries were brought to me, by the men, at one of the resting places. I observed a very diminutive species of the raspberry, with fruit, on the moist grounds. Botanists would probably deem the plants few, and destitute of much interest. Parasitic moss is very common to the forest trees, and it communicates a peculiar aspect to the grey pine, which is the prevailing growth on all the elevations.
To the geologist, the scene is one of interest. The boulders of granite, and other primitive strata, occurring on the surface, remind him of the original position of these masses, in the system of nature and indicate revolutions affecting the earth’s surface, which have widely changed both the position and form of these solid materials. When the soil itself is examined, it adds further evidences of such changes. We may refer its sand to consolidated strata of this mineral which have been broken down by oceanic action, and distributed in the remarkable ridges and elevations, which now characterise the face of the country. In whatever light the subject is viewed, it seems difficult to resist the conclusion, that water has been the cause, under providence, in effecting these changes, and that the highest grounds in this region, have been subjected to the peculiar influence which this element alone exerts in the work of attrition and deposition of strata, solid or diluvial. It might be interesting to inquire, in what manner this agent of change was withdrawn, and whether a current was created toward either of the cardinal points. It would aid this inquiry to observe, in which direction the debris and soils were deposited in the heaviest masses? How far granite boulders had been carried from their beds? And whether wood, bones, and other organic remains had been subjected to like removals? We think these accumulations are abundantly witnessed in casting the eye down the Mississippi valley, with a measured decrease in the size and weight of the pulverised masses, in proceeding from the head to the mouth of this river. It is thus evident, that the heaviest boulders are found on its upper branches, while they become rare in its central plains, and disappear altogether, long before its entrance into the deltas at its mouth. And this remark may be coupled with the accounts given by travellers of the bleak, and denuded, and sterile character of the northern rock formations.
But we have no leisure to devote to this investigation, and must proceed with the narrative that is before us. Every step we made in treading these sandy elevations, seemed to increase the ardor with which we were carried forward. The desire of reaching the actual source of a stream so celebrated as the Mississippi—a stream which La Salle had reached the mouth of, a century and a half (lacking a year) before, was perhaps predominant; and we followed our guide down the sides of the last elevation, with the expectation of momentarily reaching the goal of our journey. What had been long sought, at last appeared suddenly. On turning out of a thicket, into a small weedy opening, the cheering sight of a transparent body of water burst upon our view. It was Itasca Lake—the source of the Mississippi.
ITASCA LAKE
(the source of the Mississippi River, 3160 miles from the Balize.)
CHAPTER VI.
Outlines of Itasca Lake.—Its scenery and productions.—Forest trees, deer, fish, shells.—Width of its outlet.—Altitude above the ocean.—Length of the Mississippi.—Its course above Cass Lake.—Its origin south of latitude 47 deg. 16 minutes.—General observations on the Mississippi.—Erect a flag