Monday, August 29.--We broke camp about 8 o'clock, leaving the trail, which runs down to the mouth of the creek, and pa.s.sed over a succession of high ridges, and part of the time through fallen timber. The trail of the Indians leads off to the left, to the brink of the Yellowstone, which it follows up about three-fourths of a mile, and then crosses to the east side. Hauser, Gillette, Stickney, Trumbull and myself rode out to the summit of Mount Washburn, which is probably the highest peak on the west side of the river. Having an aneroid barometer with us, we ascertained the elevation of the mountain to be about 9,800 feet. The summit is about 500 feet above the snow line.

Descending the mountain on the southwest side, we came upon the trail of the pack train, which we followed to our camp at the head of a small stream running into the Yellowstone, which is about five miles distant.

As we came into camp a black bear kindly vacated the premises. After supper some of our party followed down the creek to its mouth. At about one mile below our camp the creek runs through a bed of volcanic ashes, which extends for a hundred yards on either side. Toiling on our course down this creek to the river we came suddenly upon a basin of boiling sulphur springs, exhibiting signs of activity and points of difference so wonderful as to fully absorb our curiosity. The largest of these, about twenty feet in diameter, is boiling like a cauldron, throwing water and fearful volumes of sulphurous vapor higher than our heads. Its color is a disagreeable greenish yellow. The central spring of the group, of dark leaden hue, is in the most violent agitation, its convulsive spasms frequently projecting large ma.s.ses of water to the height of seven or eight feet. The spring lying to the east of this, more diabolical in appearance, filled with a hot brownish substance of the consistency of mucilage, is in constant noisy ebullition, emitting fumes of villainous odor. Its surface is covered with bubbles, which are constantly rising and bursting, and emitting sulphurous gases from various parts of its surface. Its appearance has suggested the name, which Hedges has given, of "h.e.l.l-Broth springs;" for, as we gazed upon the infernal mixture and inhaled the pungent sickening vapors, we were impressed with the idea that this was a most perfect realization of Shakespeare's image in Macbeth. It needed but the presence of Hecate and her weird band to realize that horrible creation of poetic fancy, and I fancied the "black and midnight hags" concocting a charm around this horrible cauldron. We ventured near enough to this spring to dip the end of a pine pole into it, which, upon removal, was covered an eighth of an inch thick with lead-colored sulphury slime.

There are five large springs and half a dozen smaller ones in this basin, all of them strongly impregnated with sulphur, alum and a.r.s.enic.

The water from all the larger springs is dark brown or nearly black. The largest spring is fifteen to eighteen feet in diameter, and the water boils up like a cauldron from 18 to 30 inches, and one instinctively draws back from the edge as the hot sulphur steam rises around him.

Another of the larger springs is intermittent. The smaller springs are farther up on the bank than the larger ones. The deposit of sinter bordering one of them, with the emission of steam and smoke combined, gives it a resemblance to a chimney of a miner's cabin. Around them all is an incrustation formed from the bases of the spring deposits, a.r.s.enic, alum, sulphur, etc. This incrustation is sufficiently strong in many places to bear the weight of a man, but more frequently it gave way, and from the apertures thus created hot steam issued, showing it to be dangerous to approach the edge of the springs; and it was with the greatest difficulty that I obtained specimens of the incrustation. This I finally accomplished by lying at full length upon that portion of the incrustation which yielded the least, but which was not sufficiently strong to bear my weight while I stood upright, and at imminent risk of sinking in the infernal mixture, I rolled over and over to the edge of the opening; and, with the crust slowly bending and sinking beneath me, hurriedly secured the coveted prize of black sulphur, and rolled back to a place of safety.

[Ill.u.s.tration: SECURING A SPECIMEN AT h.e.l.l-BROTH SPRINGS.]

From the springs to the mouth of the creek we followed along the bank, the bed or bottom being too rough and precipitous for us to travel in it, the total fall in the creek for the three miles being about fifteen hundred feet. Standing upon the high point at the junction of the creek with the Yellowstone, one first gets some idea of the depth of the canon through which the river runs. From this height the sound of the waters of the Yellowstone, tumbling over tremendous rocks and boulders, could not be heard. Everything around us--mountains, valleys, canon and trees, heights and depths--all are in such keeping and proportion that all our estimates of distances are far below the real truth. To-day we pa.s.sed the mouth of h.e.l.l-Roaring river on the opposite side of the Yellowstone.

It was again Jake Smith's turn for guard duty last night, but this morning Jake's countenance wore a peculiar expression, which indicated that he possessed some knowledge not shared by the rest of the party. He spoke never a word, and was as serene as a Methodist minister behind four aces. My interpretation of this self-satisfied serenity is that his guard duty did not deprive him of much sleep. When it comes to considering the question of danger in this Indian country, Jake thinks that he knows more than the veteran Jim Stuart, whom we expected to join us on this trip, and who has given us some salutary words of caution. In a matter in which the safety of our whole party is involved, it is unfortunate that there are no "articles of war" to aid in the enforcement of discipline, in faithful guard duty.

Tuesday, August 30.--We broke camp about 9 o'clock a.m., traveling in a southerly direction over the hills adjoining our camp, and then descended the ridge in a southwesterly direction, heading off several ravines, till we came into a small valley; thence we crossed over a succession of ridges of fallen timber to a creek, where we halted about ten miles from our morning camp and about a mile from the upper fall of the Yellowstone. Mr. Hedges gave the name "Cascade creek" to this stream.

When we left our camp this morning at h.e.l.l-Broth springs, I remarked to Mr. Hedges and General Washburn that the wonders of which we were in pursuit had not disappointed us in their first exhibitions, and that I was encouraged in the faith that greater curiosities lay before us. We believed that the great cataracts of the Yellowstone were within two days', or at most three days', travel. So when we reached Cascade creek, on which we are now encamped, after a short day of journeying, it was with much astonishment as well as delight that we found ourselves in the immediate presence of the falls. Their roar, smothered by the vast depth of the canon into which they plunge, was not heard until they were before us. With remarkable deliberation we unsaddled and lariated our horses, and even refreshed ourselves with such creature comforts as our larder readily afforded, before we deigned a survey of these great wonders of nature. On our walk down the creek to the river, struck with the beauty of its cascades, we even neglected the greater, to admire the lesser wonders. Bushing with great celerity through a deep defile of lava and obsidian, worn into caverns and fissures, the stream, one-fourth of a mile from its debouchure, breaks into a continuous cascade of remarkable beauty, consisting of a fall of five feet, succeeded by another of fifteen into a grotto formed by proximate rocks imperfectly arching it, whence from a crystal pool of unfathomable depth at their base, it lingers as if half reluctant to continue its course, or as if to renew its power, and then glides gracefully over a descending, almost perpendicular, ledge, veiling the rocks for the distance of eighty feet. Mr. Hedges gave to this succession of cascades the name "Crystal fall." It is very beautiful; but the broken and cavernous gorge through which it pa.s.ses, worn into a thousand fantastic shapes, bearing along its margin the tracks of grizzly bears and lesser wild animals, scattered throughout with huge ma.s.ses of obsidian and other volcanic matter--the whole suggestive of nothing earthly nor heavenly--received at our hands, and not inaptly as I conceive, the name of "The Devil's Den."

I presume that many persons will question the taste evinced by our company in the selection of names for the various objects of interest we have thus far met with; but they are all so different from any of Nature's works that we have ever seen or heard of, so entirely out of range of human experience, and withal so full of exhibitions which can suggest no other fancy than that which our good grandmothers have painted on our boyish imaginations as a destined future abode, that we are likely, almost involuntarily, to pursue the system with which we have commenced, to the end of our journey. A similar imagination has possessed travelers and visitors to other volcanic regions.

We have decided to remain at this point through the entire day to-morrow, and examine the canon and falls. From the brief survey of the canon I was enabled to make before darkness set in, I am impressed with its awful grandeur, and I realize the impossibility of giving to any one who has not seen a gorge similar in character, any idea of it.

[Ill.u.s.tration: Cornelius Hedges.]

It is getting late, and it is already past our usual bedtime, and Jake Smith is calling to me to "turn in" and give him a chance to sleep.

There is in what I have already seen so much of novelty to fill the mind and burden the memory, that unless I write down in detail the events of each day, and indeed almost of each hour as it pa.s.ses, I shall not be able to prepare for publication on my return home any clear or satisfactory account of these wonders. So Jake may go to. I will write until my candle burns out. Jacob is indolent and fond of slumber, and I think that he resents my remark to him the other day, that he could burn more and gather less wood than any man I ever camped with. He has dubbed me "The Yellowstone sharp." Good! I am not ashamed to have the t.i.tle.

Lieutenant Doane has crawled out of his blankets, and is just outside the tent with his hand and fore-arm immersed in water nearly as cold as ice. I am afraid that lock-jaw will set in if he does not consent to have the felon lanced.

Wednesday, August 31.--This has been a "red-letter" day with me, and one which I shall not soon forget, for my mind is clogged and my memory confused by what I have to-day seen. General Washburn and Mr. Hedges are sitting near me, writing, and we have an understanding that we will compare our notes when finished. We are all overwhelmed with astonishment and wonder at what we have seen, and we feel that we have been near the very presence of the Almighty. General Washburn has just quoted from the psalm:

"When I behold the work of Thy hands, what is man that Thou art mindful of him!"

My own mind is so confused that I hardly know where to commence in making a clear record of what is at this moment floating past my mental vision. I cannot confine myself to a bare description of the falls of the Yellowstone alone, for these two great cataracts are but one feature in a scene composed of so many of the elements of grandeur and sublimity, that I almost despair of giving to those who on our return home will listen to a recital of our adventures, the faintest conception of it. The immense canon or gorge of rocks through which the river descends, perhaps more than the falls, is calculated to fill the observer with feelings of mingled awe and terror. This chasm is seemingly about thirty miles in length. Commencing above the upper fall, it attains a depth of two hundred feet where that takes its plunge, and in the distance of half a mile from that point to the verge of the lower fall, it rapidly descends with the river between walls of rock nearly six hundred feet in vertical height, to which three hundred and twenty feet are added by the fall. Below this the wall lines marked by the descent of the river grow in height with incredible distinctness, until they are probably two thousand feet above the water. There is a difference of nearly three thousand feet in alt.i.tude between the surface of the river at the upper fall and the foot of the canon. Opposite Mount Washburn the canon must be more than half a vertical mile in depth. As it is impossible to explore the entire canon, we are unable to tell whether the course of the river through it is broken by other and larger cataracts than the two we have seen, or whether its continuous descent alone has produced the enormous depth to which it has attained. Rumors of falls a thousand feet in height have often reached us before we made this visit. At all points where we approached the edge of the canon the river was descending with fearful momentum through it, and the rapids and foam from the dizzy summit of the rock overhanging the lower fall, and especially from points farther down the canon, were so terrible to behold, that none of our company could venture the experiment in any other manner than by lying p.r.o.ne upon the rock, to gaze into its awful depths; depths so amazing that the sound of the rapids in their course over immense boulders, and lashing in fury the base of the rocks on which we were lying, could not be heard. The stillness is horrible, and the solemn grandeur of the scene surpa.s.ses conception. You feel the absence of sound--the oppression of absolute silence. Down, down, down, you see the river attenuated to a thread. If you could only hear that gurgling river, lashing with puny strength the ma.s.sive walls that imprison it and hold it in their dismal shadow, if you could but see a living thing in the depth beneath you, if a bird would but fly past you, if the wind would move any object in that awful chasm, to break for a moment the solemn silence which reigns there, it would relieve that tension of the nerves which the scene has excited, and with a grateful heart you would thank G.o.d that he had permitted you to gaze unharmed upon this majestic display of his handiwork. But as it is, the spirit of man sympathizes with the deep gloom of the scene, and the brain reels as you gaze into this profound and solemn solitude.

[Ill.u.s.tration: GRAND CAnON.]

The place where I obtained the best and most terrible view of the canon was a narrow projecting point situated two or three miles below the lower fall.[H] Standing there or rather lying there for greater safety, I thought how utterly impossible it would be to describe to another the sensations inspired by such a presence. As I took in this scene, I realized my own littleness, my helplessness, my dread exposure to destruction, my inability to cope with or even comprehend the mighty architecture of nature. More than all this I felt as never before my entire dependence upon that Almighty Power who had wrought these wonders. A sense of danger, lest the rock should crumble away, almost overpowered me. My knees trembled, and I experienced the terror which causes, men to turn pale and their countenances to blanch with fear, and I recoiled from the vision I had seen, glad to feel the solid earth beneath me and to realize the a.s.surance of returning safety.

The scenery surrounding the canon and falls on both banks of the Yellowstone is enlivened by all the hues of abundant vegetation. The foot-hills approach the river, crowned with a vesture of evergreen pines. Meadows verdant with gra.s.ses and shrubbery stretch away to the base of the distant mountains, which, rolling into ridges, rising into peaks, and breaking into chains, are defined in the deepest blue upon the horizon. To render the scene still more imposing, remarkable volcanic deposits, wonderful boiling springs, jets of heated vapor, large collections of sulphur, immense rocks and petrifications abound in great profusion in this immediate vicinity. The river is filled with trout, and bear, elk, deer, mountain lions and lesser game roam the plains, forests and mountain fastnesses.

The two grand falls of the Yellowstone form a fitting completion to this stupendous climax of wonders. They impart life, power, light and majesty to an a.s.semblage of elements, which without them would be the most gloomy and horrible solitude in nature. Their eternal anthem, echoing from canon, mountain, rock and woodland, thrills you with delight, and you gaze with rapture at the iris-crowned curtains of fleecy foam as they plunge into gulfs enveloped in mist and spray. The stillness which held your senses spellbound, as you peered into the dismal depths of the canon below, is now broken by the uproar of waters; the terror it inspired is superseded by admiration and astonishment, and the scene, late so painful from its silence and gloom, is now animate with joy and revelry.

The upper fall, as determined by the rude means of measurement at our command, is one hundred and fifteen feet in height. The river approaches it through a pa.s.sage of rocks which rise one hundred feet on either side above its surface. Until within half a mile of the brink of the fall the river is peaceful and unbroken by a ripple. Suddenly, as if aware of impending danger, it becomes lashed into foam, circled with eddies, and soon leaps into fearful rapids. The rocky jaws confining it gradually converge as it approaches the edge of the fall, bending its course by their projections, and apparently crowding back the water, which struggles and leaps against their bases, warring with its bounds in the impatience of restraint, and madly leaping from its confines, a liquid emerald wreathed with foam, into the abyss beneath. The sentinel rocks, a hundred feet asunder, could easily be spanned by a bridge directly over and in front of the fall, and fancy led me forward to no distant period when such an effort of airy architecture would be crowded with happy gazers from all portions of our country. A quarter of the way between the verge and the base of the fall a rocky table projects from the west bank, in front of and almost within reaching distance of it, furnishing a point of observation where the finest view can be obtained.

In order to get a more perfect view of the cataract, Mr. Hedges and I made our way down to this table rock, where we sat for a long time. As from this spot we looked up at the descending waters, we insensibly felt that the slightest protrusion in them would hurl us backwards into the gulf below. A thousand arrows of foam, apparently _aimed at us_, leaped from the verge, and pa.s.sed rapidly down the sheet. But as the view grew upon us, and we comprehended the power, majesty and beauty of the scene, we became insensible to danger and gave ourselves up to the full enjoyment of it.

Very beautiful as is this fall, it is greatly excelled in grandeur and magnificence by the cataract half a mile below it, where the river takes another perpendicular plunge of three hundred and twenty feet into the most gloomy cavern that ever received so majestic a visitant. Between the two falls, the river, though bordered by lofty precipices, expands in width and flows gently over a nearly level surface until its near approach to the verge. Here a sudden convergence in the rocks compresses its channel, and with a gurgling, choking struggle, it leaps with a single bound, sheer from an even level shelf, into the tremendous chasm. The sheet could not be more perfect if wrought by art. The Almighty has vouchsafed no grander scene to human eyes. Every object that meets the vision increases its sublimity. There is a majestic harmony in the whole, which I have never seen before in nature's grandest works. The fall itself takes its leap between the jaws of rocks whose vertical height above it is more than six hundred feet, and more than nine hundred feet above the chasm into which it falls. Long before it reaches the base it is enveloped in spray, which is woven by the sun's rays into bows radiant with all the colors of the prism, and arching the face of the cataract with their glories. Five hundred feet below the edge of the canon, and one hundred and sixty feet above the verge of the cataract, and overlooking the deep gorge beneath, on the flattened summit of a projecting crag, I lay with my face turned into the boiling chasm, and with a stone suspended by a large cord measured its profoundest depths. Three times in its descent the cord was parted by abrasion, but at last, securing the weight with a leather band, I was enabled to ascertain by a measurement which I think quite exact, the height of the fall. It is a little more than three hundred and twenty feet; while the perpendicular wall down which I suspended the weight was five hundred and ten feet.

[Ill.u.s.tration: LOWER FALL OF THE YELLOWSTONE.]

Looking down from this lofty eminence through the canon below the falls, the scene is full of grandeur. The descent of the river for more than a mile is marked by continuous cascades varying in height from five to twenty feet, and huge rapids breaking over the rocks, and lashing with foam the precipitous sides of the gorge. A similar descent through the entire canon (thirty miles), is probable, as in no other way except by distinct cataracts of enormous height can the difference in alt.i.tude between this point and its outlet be explained. The colors of the rock, which is shaly in character, are variegated with yellow, gray and brown, and the action of the water in its rapid pa.s.sage down the sides of the canon has worn the fragments of shale into countless capricious forms.

Jets of steam issue from the sides of the canon at frequent intervals, marking the presence of thermal springs and active volcanic forces. The evidence of a recession of the river through the canon is designated by the ridges apparent on its sides, and it is not improbable that at no distant day the lower fall will become blended by this process with the upper, forming a single cataract nearly five hundred feet in height.

There are but few places where the sides of the Grand canon can be descended with safety. Hauser and Stickney made the descent at a point where the river was 1,050 feet below the edge of the canon, as determined by triangulation by Mr. Hauser. Lieutenant Doane, accompanied by his orderly, went down the river several miles, and following down the bed of a lateral stream reached its junction with the Yellowstone at a point where the canon was about 1,500 feet in depth--the surface of the ground rising the farther he went down the river.

Mr. Hedges and I sat on the table-rock to which I have referred, opposite the upper fall, as long as our limited time would permit; and as we reluctantly left it and climbed to the top, I expressed my regret at leaving so fascinating a spot, quoting the familiar line:

"A thing of beauty is a joy forever."

Mr. Hedges asked me who was the author of the line, but I could not tell. I will look it up on my return.[I]

Yes! This stupendous display of nature's handiwork will be to me "a joy forever." It lingers in my memory like the faintly defined outlines of a dream. I can scarcely realize that in the unbroken solitude of this majestic range of rocks, away from civilization and almost inaccessible to human approach, the Almighty has placed so many of the most wonderful and magnificent objects of His creation, and that I am to be one of the few first to bring them to the notice of the world. Truly has it been said, that we live to learn how little may be known, and of what we see, how much surpa.s.ses comprehension.

Thursday, September 1.--We did not break camp till nearly ten o'clock this morning, the pack-train crossing Cascade creek at its head, and coming into the river trail about two miles above the upper fall. The more direct trail--shorter by one and a half miles--runs along the bank of the river.

If we had not decided, last night, that we would move on to-day, I think that every member of the party would have been glad to stay another day at the canon and falls. I will, however, except out of the number our comrade Jake Smith. The afternoon of our arrival at the canon (day before yesterday), after half an hour of inspection of the falls and canon, he said: "Well, boys, I have seen all there is, and I am ready to move on."

However, the perceptible decline in our larder, and the uncertainty of the time to be occupied in further explorations, forbid more than these two days' stay at the falls and canon. The sun this morning shone brightly, and its rays were reflected upon the sides of the dismal canon--so dark, and gray, and still--enlivening and brightening it.

To-day has been warm, and nature this morning seemed determined that our last look should be the brightest, for the beauties of the entire landscape invited us to make a longer stay, and we lingered till the last moment, that the final impression might not be lost.

Pursuing our journey, at two miles above the falls we crossed a small stream which we named "Alum" creek, as it is strongly impregnated with alum.

[Ill.u.s.tration: W.C. Gillette.]

Six miles above the upper fall we entered upon a region remarkable for the number and variety of its hot springs and craters. The princ.i.p.al spring, and the one that first meets the eye as you approach from the north, is a hot sulphur spring, of oval shape, the water of which is constantly boiling and is thrown up to the height of from three to seven feet. Its two diameters are about twelve feet and twenty feet, and it has an indented border of seemingly pure sulphur, about two feet wide and extending down into the spring or cauldron to the edge of the water, which at the time of our visit, if it had been at rest, would have been fifteen or eighteen inches below the rim of the spring. This spring is situated at the base of a low mountain, and the gentle slope below and around the spring for the distance of two hundred or three hundred feet is covered to the depth of from three to ten inches with the sulphurous deposit from the overflow of the spring. The moistened bed of a dried-up rivulet, leading from the edge of the spring down inside through this deposit, showed us that the spring had but recently been overflowing.

Farther along the base of this mountain is a sulphurous cavern about twenty feet deep, and seven or eight feet in diameter at its mouth, out of which the steam is thrown in jets with a sound resembling the puffing of a steam-boat when laboring over a sand-bar, and with as much uniformity and intonation as if emitted by a high-pressure engine. From hundreds of fissures in the adjoining mountain from base to summit, issue hot sulphur vapors, the apertures through which they escape being encased in thick incrustations of sulphur, which in many instances is perfectly pure. There are nearby a number of small sulphur springs, not especially remarkable in appearance.

About one hundred yards from these springs is a large hot spring of irregular shape, but averaging forty feet long by twenty-five wide, the water of which is of a dark muddy color. Still farther on are twenty or thirty springs of boiling mud of different degrees of consistency and color, and of sizes varying from two to eight feet in diameter, and of depths below the surface varying from three to eight feet. The mud in these springs is in most cases a little thinner than mortar prepared for plastering, and, as it is thrown up from one to two feet, I can liken its appearance to nothing so much as Indian meal hasty pudding when the process of boiling is nearly completed, except that the puffing, bloated bubbles are greatly magnified, being from a few inches to two feet in diameter. In some of the springs the mud is of dark brown color, in others nearly pink, and in one it was almost yellow. Springs four or five feet in diameter and not over six feet apart, have no connection one with another either above or beneath the surface, the mud in them being of different colors. In some instances there is a difference of three feet in the height to which the mud in adjoining springs attains. There may be in some instances two or more springs which receive their supply of mud and their underground pressure from the same general source, but these instances are rare, nor can we determine positively that such is the case. This mud having been worked over and over for many years is as soft as the finest pigments.

All of these springs are embraced within a circle the radius of which is from a thousand to twelve hundred feet, and the whole of this surface seems to be a smothered crater covered over with an incrustation of sufficient strength and thickness to bear usually a very heavy weight, but which in several instances yielded and even broke through under the weight of our horses as we rode over it. We quickly dismounted, and as we were making some examinations, the crust broke through several times in some thin places through which vapor was issuing. Under the whole of this incrustation the hottest fires seem to be raging, and the heat issuing from the vents or from the crevices caused from the breaking in of the surface is too intense to be borne by the gloved hand for an instant. Surrounding the natural vents are deposits of pure sulphur, portions of which in many instances we broke off, and after allowing them to cool, brought them away with us. On the top of the mountain overlooking the large sulphur spring is a small living crater about six inches in diameter, out of which issue hot vapor and smoke. On the slope adjoining the mud spring is another crater of irregular shape, but embracing about one hundred square inches, out of which issues hot vapor, the rocks adjoining changing color under the intense heat with every breath blown upon them.

The tramp of our horses' feet as we rode over the incrustation at the base of the mountain returned a hollow sound; yet while some of our party were not disposed to venture upon it with their horses, still I think with care in selecting a route there is very little danger in riding over it.

On the mountain, large quant.i.ties of sulphur formed by the condensation of the vapor issuing from the crevices, now closed, but once in activity in the incrusted covering, have been deposited, and we collected many specimens of pure and crystallized sulphur. Thousands of pounds of pure and nearly pure sulphur are now lying on the top and sides of the mountain, all of which can be easily gathered with the aid of a spade to detach it from the mountain side incrustations to which it adheres in the process of condensation. We gave to this mountain the name "Crater hill."

Five miles further on we camped near the "Mud geyser." Our course to-day has been for the greater part over a level valley, which was plainly visible from the top of Mount Washburn. The water of the river at this point is strongly impregnated with the mineral bases of the springs surrounding our camp, and that empty into the river above it.

Friday, September 2.--To-day we have occupied ourselves in examining the springs and other wonders at this point. At the base of the foot-hills adjoining our camp are three large springs of thick boiling mud, the largest of which resembles an immense cauldron. It is about thirty feet in diameter, bordered by a rim several feet wide, upon which one can stand within reach of the boiling ma.s.s of mud, the surface of which is four or five feet below the rim enclosing it, the rim being a little raised above the surrounding level. Some twelve or fifteen rods from this spring are two other springs from ten to twelve feet in diameter.

Near by is a hot (not boiling) spring of sulphur, fifteen to eighteen feet in diameter, too hot to bathe in. From these we pa.s.sed over the timbered hill at the base of which these springs are situated. In the timber along the brow of the hill and near its summit, and immediately under the living trees, the hot sulphur vapor and steam issue from several fissures or craters, showing that the hottest fires are raging at some point beneath the surface crust, which in a great many places gives forth a hollow sound as we pa.s.s over it. Through a little coulee on the other side of the hill runs a small stream of greenish water, which issues from a small cavern, the mouth of which is about five feet high and the same dimension in width. From the mouth, the roof of the cavern descends at an angle of about fifteen degrees, till at the distance of twenty feet from the entrance it joins the surface of the water. The bottom of the cavern under the water seems to descend at about the same angle, but as the water is in constant ebullition, we cannot determine this fact accurately. The water is thrown out in regular spasmodic jets, the pulsations occurring once in ten or twelve seconds. The sides and mouth of this cavern are covered with a dark green deposit, some of which we have taken with us for a.n.a.lysis. About two hundred yards farther on is another geyser, the flow of which occurs about every six hours, and when the crater is full the diameter of the surface is about fourteen feet, the sides of the crater being of an irregular funnelshape, and descending at an angle of about forty-five degrees. At the lowest point at which we saw the water it was about seven feet in diameter on the surface. One or another of our party watched the gradual rise of the water for four or five hours. The boiling commenced when the water had risen half way to the surface, occasionally breaking forth with great violence. When the water had reached its full height in the basin, the stream was thrown up with great force to a height of from twenty to thirty feet, the column being from seven to ten feet in diameter at the midway height of the column, from bottom to top. The water was of a dark lead color, and those portions of the sides of the crater that were overflowed and then exposed by the rise and fall of the water were covered with stalagmites formed by the deposit from the geyser.

While surveying these wonders, our ears were constantly saluted by dull, thundering, booming sounds, resembling the reports of distant artillery.

As we approached the spot whence they proceeded, the ground beneath us shook and trembled as from successive shocks of an earthquake. Ascending a small hillock, the cause of the uproar was found to be a mud volcano--the greatest marvel we have yet met with. It is about midway up a gentle pine-covered slope, above which on the lower side its crater, thirty feet in diameter, rises to a height of about thirty-five feet.

Dense ma.s.ses of steam issue with explosive force from this crater, into whose tapering mouth, as they are momentarily dispelled by the wind, we can see at a depth of about forty feet the regurgitating contents. The explosions are not uniform in force or time, varying from three to eight seconds, and occasionally with perfect regularity occurring every five seconds. They are very distinctly heard at the distance of half a mile, and the ma.s.sive jets of vapor which accompany them burst forth like the smoke of burning gunpowder.