At Portage creek captain Clarke completed the cache, in which we deposited whatever we could spare from our baggage; some ammunition, provisions, books, the specimens of plants and minerals, and a draught of the river from its entrance to fort Mandan. After closing it he broke up the encampment, and took on all the remaining baggage to the high plain, about three miles. Portage creek has risen considerably in consequence of the rain, and the water had become of a deep crimson colour, and ill tasted; on overtaking the canoe he found that there was more baggage than could be carried on the two carriages, and therefore left some of the heavy articles which could not be injured, and proceeded on to Willowrun where he encamped for the night. Here they made a supper on two buffaloe which they killed on the way; but passed the night in the rain, with a high wind from the southwest. In the morning,
Saturday 29, finding it impossible to reach the end of the portage with their present load, in consequence of the state of the road after the rain, he sent back nearly all his party to bring on the articles which had been left yesterday. Having lost some notes and remarks which he had made on first ascending the river, he determined to go up to the Whitebear islands along its banks, in order to supply the deficiency. He there left one man to guard the baggage, and went on to the falls accompanied by his servant York, Chaboneau and his wife with her young child. On his arrival there he observed a very dark cloud rising in the west which threatened rain, and looked around for some shelter, but could find no place where they would be secure from being blown into the river if the wind should prove as violent as it sometimes does in the plains. At length about a quarter of a mile above the falls he found a deep ravine where there were some shelving rocks, under which he took refuge. They were on the upper side of the ravine near the river, perfectly safe from the rain, and therefore laid down their guns, compass, and other articles which they carried with them. The shower was at first moderate, it then increased to a heavy rain, the effects of which they did not feel: soon after a torrent of rain and hail descended; the rain seemed to fall in a solid mass, and instantly collecting in the ravine came rolling down in a dreadful current, carrying the mud and rocks, and every thing that opposed it. Captain Clarke fortunately saw it a moment before it reached them, and springing up with his gun and shotpouch in his left hand, with his right clambered up the steep bluff, pushing on the Indian woman with her child in her arms; her husband too had seized her hand and was pulling her up the hill, but he was so terrified at the danger that but for captain Clark, himself and his wife and child would have been lost. So instantaneous was the rise of the water, that before captain Clark had reached his gun and began to ascend the bank, the water was up to his waist, and he could scarce get up faster than it rose, till it reached the height of fifteen feet with a furious current, which had they waited a moment longer would have swept them into the river just above the great falls, down which they must inevitable have been precipitated. They reached the plain in safety, and found York who had separated from them just before the storm to hunt some buffaloe, and was now returning to find his master. They had been obliged to escape so rapidly that captain Clarke lost his compass and umbrella. Chaboneau left his gun, shotpouch, and tomahawk, and the Indian woman had just time to grasp her child, before the net in which it lay at her feet was carried down the current. He now relinquished his intention of going up the river and returned to the camp at Willowrun. Here he found that the party sent this morning for the baggage, had all returned to camp in great confusion, leaving their loads in the plain. On account of the heat they generally go nearly naked, and with no covering on their heads. The hail was so large and driven so furiously against them by the high wind, that it knocked several of them down: one of them particularly was thrown on the ground three times, and most of them bleeding freely and complained of being much bruised. Willow run had risen six feet since the rain, and as the plains were so wet that they could not proceed, they passed the night at their camp.
At the Whitebear camp also, we had not been insensible to the hail-storm, though less exposed. In the morning there had been a heavy shower of rain, after which it became fair. After assigning to the men their respective employments, captain Lewis took one of them and went to see the large fountain near the falls. For about six miles he passed through a beautiful level plain, and then on reaching the break of the river hills, was overtaken by the gust of wind from the southwest attended by lightning, thunder, and rain: fearing a renewal of the scene on the 27th, they took shelter in a little gully where there were some broad stones with which they meant to protect themselves against the hail; but fortunately there was not much, and that of a small size; so that they felt no inconvenience except that of being exposed without shelter for an hour, and being drenched by the rain: after it was over they proceeded to the fountain which is perhaps the largest in America. It is situated in a pleasant level plain, about twenty-five yards from the river, into which it falls over some steep irregular rocks with a sudden ascent of about six feet in one part of its course. The water boils up from among the rocks and with such force near the centre, that the surface seems higher there than the earth on the sides of the fountain, which is a handsome turf of fine green grass. The water is extremely pure, cold and pleasant to the taste, not being impregnated with lime or any foreign substance. It is perfectly transparent and continues its bluish cast for half a mile down the Missouri, notwithstanding the rapidity of the river. After examining it for some time captain Lewis returned to the camp.
Sunday 30. In the morning Captain Clarke sent the men to bring up the baggage left in the plains yesterday. On their return the axletrees and carriages were repaired, and the baggage, conveyed on the shoulders of the party across Willow run which had fallen as low as three feet. The carriages being then taken over, a load of baggage was carried to the six-mile stake, deposited there, and the carriages brought back. Such is the state of the plains that this operation consumed the day. Two men were sent to the falls to look for the articles lost yesterday; but they found nothing but the compass covered with mud and sand at the mouth of the ravine; the place at which captain Clarke had been caught by the storm, was filled with large rocks. The men complain much of the bruises received yesterday from the hail. A more than usual number of buffaloe appeared about the camp to-day, and furnished plenty of meat: captain Clarke thought that at one view he must have seen at least ten thousand. In the course of the day there was a heavy gust of wind from the southwest, after which the evening was fair.
At the Whitebear camp we had a heavy dew this morning, which is quite a remarkable occurrence. The party continues to be occupied with the boat, the crossbars for which are now finished, and there remain only the strips to complete the wood work: the skins necessary to cover it have already been prepared and they amount to twenty-eight elk skins and four buffaloe skins. Among our game were two beaver, which we have had occasion to observe always are found wherever there is timber. We also killed a large bat or goatsucker of which there are many in this neighbourhood, resembling in every respect those of the same species in the United States. We have not seen the leather-winged bat for some time, nor are there any of the small goatsucker in this part of the Missouri. We have not seen either that species of goatsucker or nighthawk called the whippoorwill, which is commonly confounded in the United States with the large goatsucker which we observe here; this last prepares no nest but lays its eggs in the open plains; they generally begin to sit on two eggs, and we believe raise only one brood in a season: at the present moment they are just hatching their young.
Monday, July 1. After a severe day's work captain Clarke reached our camp in the evening, accompanied by his party and all the baggage except that left at the six-mile stake, for which they were too much fatigued to return. The route from the lower camp on Portage creek to that near Whitebear island, having been now measured and examined by captain Clarke was as follows:
From our camp opposite the last considerable rapid to the entrance of Portage creek south 9° east for three quarters of a mile: thence on a course south 10° east for two miles, though for the canoes the best route is to the left of this course, and strikes Portage one mile and three quarters from its entrance, avoiding in this way a very steep hill which lies above Portage creek; from this south 18° west for four miles, passing the head of a drain or ravine which falls into the Missouri below the great falls, and to the Willow run which has always a plentiful supply of good water and some timber: here the course turns to south 45° west for four miles further; then south 66° west three miles, crossing at the beginning of the course the head of a drain which falls into the Missouri at the Crooked Falls, and reaching an elevated point of the plain from which south 42° west. On approaching the river on this course there is a long and gentle descent from the high plain, after which the road turns a little to the right of the course up the river to our camp. The whole portage is seventeen and three quarter miles.
At the Whitebear camp we were occupied with the boat and digging a pit for the purpose of making some tar. The day has been warm, and the mosquitoes troublesome. We were fortunate enough to observe equal altitudes of the sun with sextant, which since our arrival here we have been prevented from doing, by flying clouds and storms in the evening.
Tuesday, July 2d. A shower of rain fell very early this morning. We then despatched some men for the baggage left behind yesterday, and the rest were engaged in putting the boat together. This was accomplished in about three hours, and then we began to sew on the leather over the crossbars or iron on the inner side of the boat which form the ends of the sections. By two o'clock the last of the baggage arrived, to the great delight of the party who were anxious to proceed. The mosquitoes we find very troublesome.
Having completed our celestial observations we went over to the large island to make an attack upon its inhabitants the bears, who have annoyed us very much of late, and who were prowling about our camp all last night. We found that the part of the island frequented by the bear forms an almost impenetrable thicket of the broad-leafed willow: into this we forced our way in parties of three; but could see only one bear, who instantly attacked Drewyer. Fortunately as he was rushing on the hunter shot him through the heart within twenty paces and he fell, which enabled Drewyer to get out of his way: we then followed him one hundred yards and found that the wound had been mortal. Not being able to discover any more of these animals we returned to camp: here in turning over some of the baggage we caught a rat somewhat larger than the common European rat, and of a lighter colour: the body and outer parts of the legs and head of a light lead colour; the inner side of the legs as well as the belly, feet and ears are white; the ears are not covered with hair, and are much larger than those of the common rat; the toes also are longer, the eyes black and prominent, the whiskers very long and full; the tail rather longer than the body, and covered with fine fur and hair of the same size with that on the back, which is very close, short, and silky in its texture. This was the first we had met, although its nests are very frequent among the cliffs of rocks and hollow trees, where we also found large quantities of the shells and seed of the prickly pear, on which we conclude they chiefly subsist. The musquitoes are uncommonly troublesome. The wind was again high from the southwest: these winds are in fact always the coldest and most violent which we experience, and the hypothesis which we have formed on that subject is, that the air coming in contact with the Snowy mountains immediately becomes chilled and condensed, and being thus rendered heavier than the air below it descends into the rarified air below or into the vacuum formed by the constant action of the sun on the open unsheltered plains. The clouds rise suddenly near these mountains and distribute their contents partially over the neighbouring plains. The same cloud will discharge hail alone in one part, hail and rain in another, and rain only in a third, and all within the space of a few miles; while at the same time there is snow falling on the mountains to the southeast of us. There is at present no snow on those mountains; that which covered them on our arrival as well as that which has since fallen having disappeared. The mountains to the north and northwest of us are still entirely covered with snow, and indeed there has been no perceptible diminution of it since we first saw them, which induces a belief either that the clouds prevailing at this season do not reach their summits or that they deposit their snow only. They glisten with great beauty when the sun shines on them in a particular direction, and most probably from this glittering appearance have derived the name of the Shining mountains.