We descended to the banks of the Clear Water River, and having encamped, the two men returned to assist their companions. We had sometimes before procured a little rest, by closing the tent, and burning wood, or flashing gunpowder within, the smoke driving the musquitoes into the crannies of the ground. But this remedy was now ineffectual, though we employed it so perseveringly, as to hazard suffocation: they swarmed under our blankets, goring us with their envenomed trunks, and steeping our clothes in blood. We rose at daylight in a fever, and our misery was unmitigated during our whole stay.

The musquitoes of America resemble, in shape, those of Africa and Europe, but differ essentially in size and other particulars. There are two distinct species, the largest of which is brown, and the smallest black. Where they are bred cannot easily be determined, for they are numerous in every soil. They make their first appearance in May, and the cold destroys them in September; in July they are most voracious; and fortunately for the traders, the journeys from the trading posts to the factories are generally concluded at that period. The food of the musquito is blood, which it can extract by penetrating the hide of a buffalo; and if it is not disturbed, it gorges itself so as to swell its body into a transparent globe. The wound does not swell, like that of the African musquito, but it is infinitely more painful; and when multiplied an hundred fold, and continued for so many successive days, it becomes an evil of such magnitude, that cold, famine, and every other concomitant of an inhospitable climate, must yield the pre-eminence to it. It chases the buffalo to the plains, irritating him to madness; and the rein-deer to the sea-shore, from which they do not return till the scourge has ceased.

On the 6th the thermometer was 106° in the sun, and on the 7th 110°. The musquitoes sought the shade in the heat of the day. It was some satisfaction to us to see the havoc made among them by a large and beautiful species of dragon-fly, called the musquito hawk, which wheeled through their retreats, swallowing its prey without a momentary diminution of its speed. But the temporary relief that we had hoped for was only an exchange of tormentors: our new assailant, the horse-fly, or bull-dog, ranged in the hottest glare of the sun, and carried off a portion of flesh at each attack. Another noxious insect, the smallest, but not the least formidable, was the sand-fly known in Canada by the name of the brulot. To such annoyance all travellers must submit, and it would be unworthy to complain of that grievance in the pursuit of knowledge, which is endured for the sake of profit. This detail of it has only been as an excuse for the scantiness of our observations on the most interesting part of the country through which we passed.

The north side of the Methye Portage is in latitude 56° 41' 40" N. and longitude 109° 52' 0" W. It is, by our course, one hundred and twenty-four miles from Isle à la Crosse, and considered as a branch of the Missinippi, five hundred and ninety-two miles from the Frog Portage. The Clear Water River passing through the valley, described above, evidently rises not far to the eastward. The height, computed by the same mode as that of the [Echiamamis], by allowing a foot for each mile of distance, and six feet on an average, for each fall and rapid, is two thousand four hundred and sixty-seven feet above the level of the sea, admitting it to be nine hundred feet above the Clear Water River. The country, in a line between it and the mouth of Mackenzie's River, is a continual descent, although to the eastward of that line, there may be several heights between it and the Arctic Sea. To the eastward, the lands descend to Hudson's Bay; and to the westward also, till the Athabasca River cuts through it, from whence it ascends to the Rocky Mountains. Daring was the spirit of enterprise that first led Commerce, with her cumbrous train, from the waters of Hudson's Bay to those of the Arctic Sea, across an obstacle to navigation so stupendous as this; and persevering has been the industry which drew riches from a source so remote.

On the 8th two men arrived, and informed us, that they had brought us our ten bags of pemmican, from Isle à la Crosse, but that they were found to be rotten. Thus were we unexpectedly deprived of the most essential of our stores, for we knew Fort Chipewyan to be destitute of provisions, and that Mr. Franklin depended upon us for a supply, whereas, enough did not remain for our own use. On the 9th, the canoes and cargoes reached the north side of the portage. Our people had selected two bags of pemmican less mouldy than the rest, which they left on the beach. Its decay was caused by some defect in the mode of mixing it.

On the 10th, we embarked in the Clear Water River, and proceeded down the current. The hills, the banks, and bed of the river, were composed of fine yellow sand, with some limestone rocks. The surface soil was alluvial. At eight A.M. we passed a portage on which the limestone rocks were singularly scattered through the woods, bearing the appearance of houses and turrets overgrown with moss. The earth emitted a hollow sound, and the river was divided by rocks, into narrow crooked channels, every object indicating that some convulsion had disturbed the general order of nature at this place. We had passed a portage above it, and after two long portages below it we encamped. Near the last was a small stream so strongly impregnated with sulphur, as to taint the air to a great distance around it. We saw two brown bears on the hills in the course of the day.

At daylight, on the 11th, we embarked. The hills continued on both sides to the mouth of the river, varying from eight hundred to one thousand feet in height. They declined to the banks in long green slopes, diversified by woody mounds and copses. The pines were not here in thick impenetrable masses, but perched aloft in single groups on the heights, or shrouded by the livelier hues of the poplar and willow.

We passed the mouth of the Red Willow River on the south bank, flowing through a deep ravine. It is the continuation of the route by the Pembina, before mentioned. At noon we entered the majestic Athabasca or Elk River. Its junction with the Clear Water River is called the Forks. Its banks were in accessible cliffs, apparently of clay and stones, about two hundred feet high, and its windings in the south were encircled by high mountains. Its breadth exceeded half a mile and was swelled to a mile in many places by long muddy islands in the middle covered with trees. No more portages interrupted our course, but a swift current hurried us towards the quarter in which our anticipated discoveries were to commence. The passing cliffs returned a loud confusion of echoes to the sprightly canoe song, and the dashing paddles; and the eagles, watching with half-closed eyes on the pine-tops, started from their airy rest, and prepared their drowsy pinions for the flight.

About twenty miles from the Forks are some salt pits and plains, said to be very extensive. The height of the banks was reduced to twenty or thirty feet, and the hills ranged themselves at an increased distance from the banks in the same variety as those of the Clear Water River. At sunset we encamped on a small sandy island, but the next morning made a speedy retreat to the canoes, the water having nearly overflown our encampment. We passed two deserted settlements of the fur traders on opposite banks, at a place called Pierre au Calumet. Beyond it the hills disappeared, and the banks were no longer visible above the trees. The river carries away yearly large portions of soil, which increases its breadth, and diminishes its depth, rendering the water so muddy as to be scarcely drinkable. Whole forests of timber are drifted down the stream, and choke up the channels between the islands at its mouth. We observed the traces of herds of buffaloes, where they had crossed the river, the trees being trodden down and strewed, as if by a whirlwind.

At four P.M. we left the main branch of the Athabasca, entering a small river, called the Embarras. It is narrow and muddy, with pines of an enormous size on its banks. Some of them are two hundred feet high, and three or four feet in diameter. At nine P.M. we landed and encamped; but finding ourselves in a nest of musquitoes, we continued our journey before day-break; and at eight A.M., emerged into the Athabasca Lake. A strong wind agitated this sea of fresh water, which, however, we crossed without any accident, and landed on the north side of it, at Fort Chipewyan; where we had the satisfaction of finding our companions in good health, and of experiencing that sympathy in our anxiety on the state of affairs, which was only to be expected from those who were to share our future fortunes.