17th.--Leaving our encampment at six in the morning, we traveled along the bottom, which is about two miles wide, bordered by low hills, in which the strata contained handsome and very distinct vegetable fossils. In a gully a short distance farther up the river, and underlying these, was exposed a stratum of an impure or argillaceous limestone. Crossing on the way Black's fork, where it is one foot deep and forty wide, with clear water and a pebbly bed, in nine miles we reached Ham's fork, a tributary to the former stream, having now about sixty feet breadth, and a few inches depth of water. It is wooded with thickets of red willow, and in the bottom is a tolerably strong growth of gra.s.s. The road here makes a traverse of twelve miles across a bend of the river. Pa.s.sing in the way some remarkable hills, two or three hundred feet high, with frequent and nearly vertical escarpments of a green stone, consisting of an argillaceous carbonate of lime, alternating with strata of an iron-brown limestone, and worked into picturesque forms by wind and rain, at two in the afternoon we reached the river again, having made to-day 21 miles. Since crossing the great dividing ridge of the Rocky mountains, plants have been very few in variety, the country being covered princ.i.p.ally with artemisia.

18th.--We pa.s.sed on the road, this morning, the grave of one of the emigrants, being the second we had seen since falling into their trail; and halted to noon on the river, a short distance above.

The Shoshonee woman took leave of us here, expecting to find some of her relations at Bridger's fort, which is only a mile or two distant, on a fork of this stream. In the evening we encamped on a salt creek, about fifteen feet wide, having to-day traveled 32 miles.

I obtained an emersion of the first satellite under favorable circ.u.mstances, the night being still and clear.

One of our mules died here, and in this portion of our journey we lost six or seven of our animals. The gra.s.s which the country had lately afforded was very poor and insufficient; and animals which have been accustomed to grain become soon weak and unable to labor, when reduced to no other nourishment than gra.s.s. The American horses (as those are usually called which are brought to this country from the States) are not of any serviceable value until after they have remained a winter in the country, and become accustomed to live entirely on gra.s.s.

19th.--Desirous to avoid every delay not absolutely necessary, I sent on Carson in advance to Fort Hall this morning, to make arrangements for a small supply of provisions. A few miles from our encampment, the road entered a high ridge, which the trappers called the "little mountain,"

connecting the Utah with the Wind River chain; and in one of the hills near which we pa.s.sed I remarked strata of a conglomerate formation, fragments of which were scattered over the surface. We crossed a ridge of this conglomerate, the road pa.s.sing near a grove of low cedar, and descending upon one of the heads of Ham's fork, called Muddy, where we made our mid-day halt. In the river hills at this place, I discovered strata of fossiliferous rock, having an _oolitic structure_, which, in connection with the neighboring strata, authorize us to believe that here, on the west side of the Rocky mountains, we find repeated the modern formations of Great Britain and Europe, which have hitherto been wanting to complete the system of North American geology.

In the afternoon we continued our road, and searching among the hills a few miles up the stream, and on the same bank, I discovered, among the alternate beds of coal and clay, a stratum of white indurated clay, containing very clear and beautiful impressions of vegetable remains. This was the most interesting fossil locality I had met in the country, and I deeply regretted that time did not permit me to remain a day or two in the vicinity; but I could not antic.i.p.ate the delays to which I might be exposed in the course of our journey--or, rather, I knew that they were many and inevitable; and after remaining here only about an hour, I hurried off, loaded with as many specimens as I could conveniently carry.

Coal made its appearance occasionally in the hills during the afternoon, and was displayed in rabbit burrows in a kind of gap, through which we pa.s.sed over some high hills, and we descended to make our encampment on the same stream, where we found but very poor gra.s.s. In the evening a fine cow, with her calf, which had strayed off from some emigrant party, was found several miles from the road, and brought into camp; and as she gave an abundance of milk, we enjoyed to-night an excellent cup of coffee. We traveled to-day 28 miles, and, as has been usual since crossing the Green river, the road has been very dusty, and the weather smoky and oppressively hot. Artemisia was characteristic among the few plants.

20th.--We continued to travel up the creek by a very gradual ascent and a very excellent gra.s.sy road, pa.s.sing on the way several small forks of the stream. The hills here are higher, presenting escarpments of party-colored and apparently clay rocks, purple, dark-red, and yellow, containing strata of sandstone and limestone with sh.e.l.ls, with a bed of cemented pebbles, the whole overlaid by beds of limestone. The alternation of red and yellow gives a bright appearance to the hills, one of which was called by our people the Rainbow hill, and the character of the country became more agreeable, and traveling far more pleasant, as now we found timber and very good gra.s.s. Gradually ascending, we reached the lower level of a bed of white limestone, lying upon a white clay, on the upper line of which the whole road is abundantly supplied with beautiful cool springs, gushing out a foot in breadth and several inches deep, directly from the hill- side.

At noon we halted at the last main fork of the creek, at an elevation of 7,200 feet, and in lat.i.tude, by observation, 41 39' 45"; and in the afternoon continued on the same excellent road, up the left or northern fork of the stream, towards its head, in a pa.s.s which the barometer placed at 8,230 feet above the sea. This is a connecting ridge between the Utah or Bear River mountains and the Wind River chain of the Rocky mountains, separating the waters of the Gulf of California on the east, and those on the west belonging more directly to the Pacific, from a vast interior basin whose rivers are collected into numerous lakes having no outlet to the ocean. From the summit of this pa.s.s, the highest which the road crosses between the Mississippi and the Western ocean, our view was over a very mountainous region, whose rugged appearance was greatly increased by the smoky weather, through which the broken ridges were dark and dimly seen. The ascent to the summit of the gap was occasionally steeper than the national road in the Alleghanies; and the descent, by way of a spur on the western side, is rather precipitous, but the pa.s.s may still be called a good one. Some thickets of the willow in the hollows below deceived us into the expectation of finding a camp at our usual hour at the foot of the mountain; but we found them without water, and continued down a ravine, and encamped about dark at a place where the springs began again to make their appearance, but where our animals fared badly; the stock of the emigrants having razed the gra.s.s as completely as if we were again in the midst of the buffalo.

21st.--An hour's travel this morning brought us into the fertile and picturesque valley of Bear river, the princ.i.p.al tributary to the Great Salt lake. The stream is here two hundred feet wide, fringed with willows and occasional groups of hawthorns. We were now entering a region which, for us, possessed a strange and extraordinary interest. We were upon the waters of the famous lake which forms a salient point among the remarkable geographical features of the country, and around which the vague and superst.i.tious accounts of the trappers had thrown a delightful obscurity, which we antic.i.p.ated pleasure in dispelling, but which, in the mean time, left a crowded field for the exercise of our imagination.

In our occasional conversations with the few old hunters who had visited the region, it had been a subject of frequent speculation; and the wonders which they related were not the less agreeable because they were highly exaggerated and impossible.

Hitherto this lake had been seen only by trappers who were wandering through the country in search of new beaver-streams, caring very little for geography; its islands had never been visited; and none were to be found who had entirely made the circuit of its sh.o.r.es; and no instrumental observations or geographical survey, of any description, had ever been made anywhere in the neighboring region. It was generally supposed that it had no visible outlet; but among the trappers, including those in my own camp, were many who believed that somewhere on its surface was a terrible whirlpool, through which its waters found their way to the ocean by some subterranean communication. All these things had made a frequent subject of discussion in our desultory conversations around the fires at night; and my own mind had become tolerably well filled with their indefinite pictures, and insensibly colored with their romantic descriptions, which, in the pleasure of excitement, I was well disposed to believe, and half expected to realize.

Where we descended into this beautiful valley, it is three to four miles in breadth, perfectly level, and bounded by mountainous ridges, one above another, rising suddenly from the plain.

We continued our road down the river, and at night encamped with a family of emigrants--two men, women, and several children--who appeared to be bringing up the rear of the great caravan. I was struck with the fine appearance of their cattle, some six or eight yoke of oxen, which really looked as well as if they had been all the summer at work on some good farm. It was strange to see one small family traveling along through such a country, so remote from civilization. Some nine years since, such a security might have been a fatal one, but since their disastrous defeats in the country a little north, the Blackfeet have ceased to visit these waters. Indians however, are very uncertain in their localities; and the friendly feelings, also, of those now inhabiting it may be changed.

According to barometrical observation at noon, the elevation Of the valley was 6,400 feet above the sea; and our encampment at night in lat.i.tude 42 03' 47", and longitude 111 10' 53", by observation--the day's journey having been 26 miles. This encampment was therefore within the territorial limit of the United States; our traveling, from the time we entered the valley of the Green river, on the 15th of August, having been south of the 42d degree of north lat.i.tude, and consequently on Mexican territory; and this is the route all the emigrants now travel to Oregon.

The temperature at sunset was 65; and at evening there was a distant thunder-storm, with a light breeze from the north.

Antelope and elk were seen during the day on the opposite prairie; and there were ducks and geese in the river.

The next morning, in about three miles from our encampment, we reached Smith's fork, a stream of clear water, about 50 feet in breadth. It is timbered with cottonwood, willow, and aspen, and makes a beautiful debouchement through a pa.s.s about 600 yards wide, between remarkable mountain hills, rising abruptly on either side, and forming gigantic columns to the gate by which it enters Bear River valley. The bottoms, which below Smith's fork had been two miles wide, narrowed as we advanced to a gap 500 yards wide, and during the greater part of the day we had a winding route, the river making very sharp and sudden bends, the mountains steep and rocky, and the valley occasionally so narrow as only to leave s.p.a.ce for a pa.s.sage through.

We made our halt at noon in a fertile bottom, where the common blue flax was growing abundantly, a few miles below the mouth of Thomas's fork, one of the larger tributaries of the river.

Crossing, in the afternoon, the point of a narrow spur, we descended into a beautiful bottom, formed by a lateral valley, which presented a picture of home beauty that went directly to our hearts. The edge of the wood, for several miles along the river, was dotted with the white covers of emigrant wagons, collected in groups at different camps, where the smoke was rising lazily from the fires, around which the women were occupied in preparing the evening meal, and the children playing in the gra.s.s; and herds of cattle, grazing about in the bottom, had an air of quiet security, and civilized comfort, that made a rare sight for the traveler in such a remote wilderness.

In common with all the emigration, they had been reposing for several days in this delightful valley, in order to recruit their animals on its luxuriant pasturage after their long journey, and prepare them for the hard travel along the comparatively sterile banks of the Upper Columbia.

At the lower end of this extensive bottom, the river pa.s.ses through an open canon, where there were high vertical rocks to the water's edge, and the road here turns up a broad valley to the right. It was already near sunset; but, hoping to reach the river again before night, we continued our march along the valley, finding the road tolerably good, until we arrived at a point where it crosses the ridge by an ascent of a mile in length, which was so very steep and difficult for the gun and carriage, that we did not reach the summit until dark.

It was absolutely necessary to descend into the valley for water and gra.s.s; and we were obliged to grope our way in the darkness down a very steep, bad mountain, reaching the river at about ten o'clock. It was late before our animals were gathered into the camp, several of those which were very weak being necessarily left to pa.s.s the night on the ridge; and we sat down again to a midnight supper. The road, in the morning, presented an animated appearance. We found that we had encamped near a large party of emigrants; and a few miles below, another party was already in motion. Here the valley had resumed its usual breadth, and the river swept off along the mountains on the western side, the road continuing directly on.

In about an hour's travel we met several Shoshonee Indians, who informed us that they belonged to a large village which had just come into the valley from the mountain to the westward, where they had been hunting antelope and gathering service-berries. Glad at the opportunity of seeing one of their villages, and in the hope of purchasing from them a few horses, I turned immediately off into the plain towards their encampment, which was situated on a small stream near the river.

We had approached within something more than a mile of the village, when suddenly a single horseman emerged from it at full speed, followed by another and another in rapid succession; and then party after party poured into the plain, until, when the foremost rider reached us, all the whole intervening plain was occupied by a ma.s.s of hors.e.m.e.n, which came charging down upon us with guns and naked swords, lances, and bows and arrows-- Indians entirely naked, and warriors fully dressed for war, with the long red streamers of their war-bonnets reaching nearly to the ground, all mingled together in the bravery of savage warfare. They had been thrown into a sudden tumult by the appearance of our flag, which, among these people, is regarded as an emblem of hostility--it being usually borne by the Sioux and the neighboring mountain Indians, when they come here to war; and we had, accordingly been mistaken for a body of their enemies. A few words from the chief quieted the excitement; and the whole band, increasing every moment in number, escorted us to their encampment, where the chief pointed out a place for us to encamp, near his own lodge, and we made known our purpose in visiting the village. In a very short time we purchased eight horses, for which we gave in exchange blankets, red and blue cloth, beads, knives, and tobacco, and the usual other articles of Indian traffic. We obtained from them also a considerable quant.i.ty of berries, of different kinds, among which service-berries were the most abundant; and several kinds of roots and seeds, which we could eat with pleasure, as any kind of vegetable food was gratifying to us. I ate here, for the first time, the _kooyah_, or _tobacco-root_, (_valeriana edulis_,)--the princ.i.p.al edible root among the Indians who inhabit the upper waters of the streams on the western side of the mountains. It has a very strong and remarkably peculiar taste and odor, which I can compare to no other vegetable that I am acquainted with, and which to some persons is extremely offensive. It was characterized by Mr.

Preuss as the most horrid food he had ever put in his mouth; and when, in the evening, one of the chiefs sent his wife to me with a portion which she had prepared as a delicacy to regale us, the odor immediately drove him out of the lodge; and frequently afterwards he used to beg that when those who liked it had taken what they desired, it might be sent away. To others, however, the taste is rather an agreeable one; and I was afterwards glad when it formed an addition to our scanty meals. It is full of nutriment; and in its unprepared state is said by the Indians to have very strong poisonous qualities, of which it is deprived by a peculiar process, being baked in the ground for about two days.

The morning of the 24th was disagreeably cool, with an easterly wind, and very smoky weather. We made a late start from the village, and, regaining the road, (on which, during all the day, were scattered the emigrant wagons,) we continued on down the valley of the river, bordered by high and mountainous hills, on which fires are seen at the summit. The soil appears generally good, although, with the gra.s.ses, many of the plants are dried up, probably on account of the great heat and want of rain. The common blue flax of cultivation, now almost entirely in seed--only a scattered flower here and there remaining--is the most characteristic plant of the Bear River valley. When we encamped at night, on the right bank of the river, it was growing as in a sown field. We had traveled during the day twenty-two miles, encamping in lat.i.tude (by observation) 42 36' 56", chronometric longitude 111 42' 05".

In our neighborhood the mountains appeared extremely rugged, giving still greater value to this beautiful natural pa.s.s.

25th.--This was a cloudless but smoky autumn morning, with a cold wind from the southeast, and a temperature of 45 at sunrise. In a few miles I noticed, where a little stream crossed the road, fragments of _scoriated basalt_ scattered about--the first volcanic rock we had seen, and which now became a characteristic rock along our future road. In about six miles' travel from our encampment, we reached one of the points in our journey to which we had always looked forward with great interest--the famous _Beer springs_. The place in which they are situated is a basin of mineral waters enclosed by the mountains, which sweep around a circular bend of Bear river, here at its most northern point, and which, from a northern, in the course of a few miles acquires a southern direction towards the GREAT SALT LAKE. A pretty little stream of clear water enters the upper part of the basin, from an open valley in the mountains, and, pa.s.sing through the bottom, discharges into Bear river.

Crossing this stream, we descended a mile below, and made our encampment in a grove of cedar immediately at the Beer springs, which, on account of the effervescing gas and acid taste, have received their name from the voyageurs and trappers of the country, who, in the midst of their rude and hard lives, are fond of finding some fancied resemblance to the luxuries they rarely have the fortune to enjoy.

Although somewhat disappointed in the expectations which various descriptions had led me to form of unusual beauty of situation and scenery, I found it altogether a place of very great interest; and a traveler for the first time in a volcanic region remains in a constant excitement, and at every step is arrested by something remarkable and new.

There is a confusion of interesting objects gathered together in a small s.p.a.ce. Around the place of encampment the Beer springs were numerous; but, as far as we could ascertain, were confined entirely to that locality in the bottom. In the bed of the river, in front, for a s.p.a.ce of several hundred yards, they were very abundant; the effervescing gas rising up and agitating the water in countless bubbling columns. In the vicinity round about were numerous springs of an entirely different and equally marked mineral character. In a rather picturesque spot about 1,300 yards below our encampment, and immediately on the river bank, is the most remarkable spring of the place. In an opening on the rock, a white column of scattered water is thrown up, in form like a _jet-d'eau_, to a variable height of about three feet, and, though it is maintained in a constant supply, its greatest height is only attained at regular intervals, according to the action of the force below. It is accompanied by a subterranean noise, which, together with the motion of the water, makes very much the impression of a steamboat in motion; and, without knowing that it had been already previously so called, we gave to it the name of the _Steamboat spring_. The rock through which it is forced is slightly raised in a convex manner, and gathered at the opening into an urn-mouthed form, and is evidently formed by continued deposition from the water, and colored bright red by oxide of iron. An a.n.a.lysis of this deposited rock, which I subjoin, will give you some idea of the properties of the water, which, with the exception of the Beer springs, is the mineral water of the place.

[Footnote: a.n.a.lYSIS.

Carbonate of lime - - - 92.55 Carbonate of magnesia - 0.42 Oxide of iron - - - - - 1.05

Silica- - - - - -} Alumina - - - - -}- - - 5.98 Water and loss- -} _______ 100.00]

It is a hot spring, and the water has a pungent and disagreeable metallic taste, leaving a burning effect on the tongue. Within perhaps two yards of the _jet-d'eau_ is a small hole of about an inch in diameter, through which, at regular intervals, escapes a blast of hot air, with a light wreath of smoke, accompanied by a regular noise. This hole had been noticed by Dr. Wislizenus, a gentleman who had several years since pa.s.sed by this place, and who remarked, with very nice observation, that smelling the gas which issued from the orifice produced a sensation of giddiness and nausea. Mr. Preuss and myself repeated the observation, and were so well satisfied with its correctness, that we did not find it pleasant to continue the experiment, as the sensation of giddiness which it produced was certainly strong and decided. A huge emigrant wagon, with a large and diversified family had overtaken us and halted to noon at our encampment; and, while we were sitting at the spring, a band of boys and girls, with two or three young men, came up, one of whom I asked to stoop down and smell the gas, desirous to satisfy myself further of its effects. But his natural caution had been awakened by the singular and suspicious features of the place, and he declined my proposal decidedly, and with a few indistinct remarks about the devil, whom he seemed to consider the _genius loci_. The ceaseless motion and the play of the fountain, the red rock and the green trees near, make this a picturesque spot.

A short distance above the spring, and near the foot of the same spur, is a very remarkable, yellow-colored rock, soft and friable, consisting princ.i.p.ally of carbonate of lime and oxide of iron, of regular structure, which is probably a fossil coral. The rocky bank along the sh.o.r.e between the Steamboat spring and our encampment, along which is dispersed the water from the hills, is composed entirely of strata of a calcareous _tufa_, with the remains of moss and reed-like gra.s.ses, which is probably the formation of springs. The _Beer_ or _Soda springs_, which have given name to this locality, are agreeable, but less highly flavored than the Boiling springs at the foot of Pike's peak, which are of the same character. They are very numerous, and half hidden by tufts of gra.s.s, which we amused ourselves in removing and searching about for more highly impregnated springs. They are some of them deep, and of various sizes--sometimes several yards in diameter, and kept in constant motion by columns of escaping gas. By a.n.a.lysis, one quart of the water contains as follows:

Grains.

Sulphate of magnesia------------ 12.10 Sulphate of lime---------------- 2.12 Carbonate of lime--------------- 3.86 Carbonate of magnesia----------- 3.22 Chloride of calcium------------- 1.33 Chloride of magnesium----------- 1.12 Chloride of sodium-------------- 2.24 Vegetable extractive matter, &c-- 0.85 _____ 26.84

The carbonic acid, originally contained in the water, had mainly escaped before it was subjected to a.n.a.lysis; and it was not, therefore, taken into consideration.

In the afternoon I wandered about among the cedars, which occupy the greater part of the bottom towards the mountains. The soil here has a dry and calcined appearance; in some places, the open grounds are covered with saline efflorescences, and there are a number of regularly-shaped and very remarkable hills, which are formed of a succession of convex strata that have been deposited by the waters of extinct springs, the orifices of which are found on their summits, some of them having the form of funnel- shaped cones. Others of these remarkably-shaped hills are of a red-colored earth, entirely bare, and composed princ.i.p.ally of carbonate of lime, with oxide of iron, formed in the same manner. Walking near one of them, on the summit of which the springs were dry, my attention was attracted by an underground noise, around which I circled repeatedly, until I found the spot from beneath which it came; and, removing the red earth, discovered a hidden spring, which was boiling up from below, with the same disagreeable metallic taste as the Steamboat spring. Continuing up the bottom, and crossing the little stream which has been already mentioned, I visited several remarkable red and white hills, which had attracted my attention from the road in the morning. These are immediately upon the stream, and, like those already mentioned, are formed by the deposition of successive strata from the springs. On their summits, the orifices through which the waters had been discharged were so large, that they resembled miniature craters, being some of them several feet in diameter, circular, and regularly formed as if by art. At a former time, when these dried-up fountains were all in motion, they must have made a beautiful display on a grand scale; and nearly all this basin appears to me to have been formed under their action, and should be called the _place of fountains_. At the foot of one of these hills, or rather on its side near the base, are several of these small limestone columns, about one foot in diameter at the base, and tapering upwards to a height of three or four feet; and on the summit the water is boiling up and bubbling over, constantly adding to the height of the little obelisks. In some, the water only boils up, no longer overflowing, and has here the same taste as at the Steamboat spring. The observer will remark a gradual subsidence in the water, which formerly supplied the fountains; as on all the summits of the hills the springs are now dry, and are found only low down upon their sides, or on the surrounding plain.

A little higher up the creek its banks are formed by strata of very heavy and hard scoriaceous basalt, having a bright metallic l.u.s.tre when broken.

The mountains overlooking the plain are of an entirely different geological character. Continuing on, I walked to the summit of one of them, where the princ.i.p.al rock was a granular quartz. Descending the mountains, and returning towards the camp along the base of the ridge which skirts the plain, I found, at the foot of a mountain spur, and issuing from a compact rock of a dark blue color, a great number of springs having the same pungent and disagreeably metallic taste already mentioned, the water of which was collected into a very remarkable basin, whose singularity, perhaps, made it appear to me very beautiful. It is large--perhaps fifty yards in circ.u.mference; and in it the water is contained, at an elevation of several feet above the surrounding ground, by a wall of calcareous _tufa_, composed princ.i.p.ally of the remains of mosses, three or four, and sometimes ten feet high. The water within is very clear and pure, and three or four feet deep, where it could be measured, near the wall; and at a considerably low level, is another pond or basin of very clear water, and apparently of considerable depth, from the bottom of which the gas was escaping in bubbling columns at many places. This water was collected into a small stream, which, in a few hundred yards, sank under ground, reappearing among the rocks between the two great springs near the river, which it entered by a little fall.

Late in the afternoon I set out on my return to the camp, and, crossing in the way a large field of salt that was several inches deep, found on my arrival that our emigrant friends, who had been encamped in company with us, had resumed their journey, and the road had again a.s.sumed its solitary character. The temperature of the largest of the _Beer_ springs at our encampment was 65 at sunset, that of the air being 62.5. Our barometric observation gave 5,840 feet for the elevation above the gulf, being about 500 feet lower than the Boiling springs, which are of a similar nature, at the foot of Pike's peak. The astronomical observations gave for our lat.i.tude 42 39' 57", and 111 46' 00" for the longitude.

The night was very still and cloudless, and I sat up for an observation of the first satellite of Jupiter, the emersion of which took place about midnight; but fell asleep at the telescope, awaking just a few minutes after the appearance of the star.

The morning of the 26th was calm, and the sky without clouds, but smoky, and the temperature at sunrise 28.5. At the same time, the temperature of the large Beer spring, where we were encamped, was 56; that of the Steamboat spring 87, and that of the steam-hole, near it, 81.5. In the course of the morning, the last wagons of the emigration pa.s.sed by, and we were again left in our place, in the rear.

Remaining in camp until nearly 11 o'clock, we traveled a short distance down the river, and halted to noon on the bank, at a point where the road quits the valley of Bear river, and, crossing a ridge which divides the Great basin from the Pacific waters, reaches Fort Hall, by way of the Portneuf river, in a distance of probably fifty miles, or two and a half days' journey for wagons. An examination of the great lake which is the outlet of this river, and the princ.i.p.al feature of geographical interest in the basin, was one of the main objects contemplated in the general plan of our survey, and I accordingly determined at this place to leave the road, and, after having completed a reconnoissance of the lake, regain it subsequently at Fort Hall. But our little stock of provisions had again become extremely low; we had only dried meat sufficient for one meal, and our supply of flour and other comforts was entirely exhausted. I therefore immediately dispatched one of the party, Henry Lee, with a note to Carson, at Fort Hall, directing him to load a pack-horse with whatever could be obtained there in the way of provisions, and endeavor to overtake me on the river. In the mean time, we had picked up along the road two tolerably well-grown calves, which would have become food for wolves, and which had probably been left by some of the earlier emigrants, none of those we had met having made any claim to them; and on these I mainly relied for support during our circuit to the lake.

In sweeping around the point of the mountain which runs down into the bend, the river here pa.s.ses between perpendicular walls of basalt, which always fix the attention, from the regular form in which it occurs, and its perfect distinctness from the surrounding rocks among which it had been placed. The mountain, which is rugged and steep, and, by our measurement, 1,400 feet above the river directly opposite the place of our halt, is called the _Sheep-rock_--probably because a flock of the mountain sheep (_ovis montana_) had been seen on the craggy point.

As we were about resuming our march in the afternoon, I was attracted by the singular appearance of an isolated hill with a concave summit, in the plain, about two miles from the river, and turned off towards it, while the camp proceeded on its way southward in search of the lake. I found the thin and stony soil of the plain entirely underlaid by the basalt which forms the river walls; and when I reached the neighborhood of the hill, the surface of the plain was rent into frequent fissures and chasms of the same scoriated volcanic rock, from 40 to 60 feet deep, but which there was not sufficient light to penetrate entirely, and which I had not time to descend. Arrived at the summit of the hill, I found that it terminated in a very perfect crater, of an oval, or nearly circular form, 360 paces in circ.u.mference, and 60 feet at the greatest depth. The walls, which were perfectly vertical, and disposed like masonry in a very regular manner, were composed of a brown-colored scoriaceous lava, similar to the light scoriaceous lava of Mt. Etna, Vesuvius, and other volcanoes. The faces of the walls were reddened and glazed by the fire, in which they had been melted, and which had left them contorted and twisted by its violent action.

Our route luring the afternoon was a little rough, being (in the direction we had taken) over a volcanic plain, where our progress was sometimes obstructed by fissures, and black beds, composed of fragments of the rock.

On both sides, the mountains appeared very broken, but tolerably well timbered.

Crossing a point of ridge which makes in to the river, we fell upon it again before sunset, and encamped on the right bank, opposite to the encampment of three lodges of Snake Indians. They visited us during the evening, and we obtained from them a small quant.i.ty of roots of different kinds, in exchange for goods. Among them was a sweet root of very pleasant flavor, having somewhat the taste of preserved quince. My endeavors to become acquainted with the plants which furnish to the Indians a portion of their support, were only gradually successful, and after long and persevering attention; and even after obtaining, I did not succeed in preserving them until they could be satisfactorily determined. In this portion of the journey, I found this particular root cut up into small pieces, that it was only to be identified by its taste, when the bulb was met with in perfect form among the Indians lower down on the Columbia, among whom it is the highly celebrated kamas. It was long afterwards, on our return through Upper California, that I found the plant itself in bloom, which I supposed to furnish the kamas root, (_cama.s.sia esculenta_.) The root diet had a rather mournful effect at the commencement, and one of the calves was killed this evening for food. The animals fared well on rushes.

27th.--The morning was cloudy, with appearance of rain, and the thermometer at sunrise at 29. Making an unusually early start, we crossed the river at a good ford; and, following for about three hours a trail which led along the bottom, we entered a labyrinth of hills below the main ridge, and halted to noon in the ravine of a pretty little stream, timbered with cottonwood of a large size, ash-leaved maple, with cherry and other shrubby trees. The hazy weather, which had prevented any very extended views since entering the Green River valley, began now to disappear. There was a slight rain in the earlier part of the day, and at noon, when the thermometer had risen to 79.5, we had a bright sun, with blue sky and scattered _c.u.muli_. According to the barometer, our halt there among the hills was at an elevation of 5,320 feet. Crossing a dividing ridge in the afternoon, we followed down another little Bear River tributary, to the point where it emerged on an open green flat among the hills, timbered with groves, and bordered with cane thickets, but without water. A pretty little rivulet coming out of the hillside, and overhung by tall flowering plants of a species I had not hitherto seen, furnished us with a good camping-place. The evening was cloudy, the temperature at sunset 69, and the elevation 5,140 feet. Among the plants occurring along the road during the day, _epinettes des prairies_ (grindelia squarraso) was in considerable abundance, and is among the very few plants remaining in bloom--the whole country having now an autumnal appearance, in the crisp and yellow plants, and dried-up gra.s.ses. Many cranes were seen during the day, with a few antelope, very shy and wild.