Among the Forces Part 6

The section traversed that day seemed while we were in it like a mighty chasm, a world half rent asunder, full of vast sublimities, but the next day, seen from the rim as a part of the mighty whole, it appeared comparatively little. One gets new meanings of the words almighty, eternity, infinity, in the presence of things done that seem to require them all.

In 1869 Major J. W. Powell, aided by nine men, attempted to pa.s.s down this tumultuous river with four boats specially constructed for the purpose. In ninety-eight days he had made one thousand miles, much of it in extremest peril. For weeks there was no possibility of climbing to the plateau above.

Any great scene in nature is like the woman you fall in love with at first sight for some pose of head, queenly carriage, auroral flush of color, penetrative music of voice, or a glance of soul through its illumined windows. You do not know much about her, but in long years of heroic endurance of trials, in the great dignity of motherhood, in the unspeakable comfortings that are scarcely short of G.o.dlike, and in the supernal, ineffable beauty and loveliness that cover it all, you find a richness and worth of which the most ardent lover never dreamed.

The first sight of the canon often brings strong men to their knees in awe and adoration. The gorge at Niagara is one hundred and fifty feet deep; it is far short of this, which is six thousand six hundred and forty. Great is the first impression, but in the longer and closer acquaintance every sense of beauty is flooded to the utmost.

The next morning I was out before "jocund day stood tiptoe on the breezy mountain tops." I have seen many sunrises In this world and one other: I have watched the moon slowly rolling its deep valleys for weeks into its morning sunlight. I knew what to expect. But nature always surpa.s.ses expectations. The sinuosities of the rim sent back their various colors. A hundred domes and spires, wind sculptured and water sculptured, reached up like Memnon to catch the first light of the sun, and seemed to me to break out into Memnonian music. As the world rolled the steady light penetrated deeper, shadows diminished, light s.p.a.ces broadened and multiplied, till it seemed as if a new creation were veritably going forward and a new "Let there be light"

had been uttered. I had seen it for the first time the night before in the mellow light of a nearly full moon, but the sunlight really seemed to make, in respect to breadth, depth, and definiteness, a new creation.

One peculiar effect I never noticed elsewhere. It is well known that the blue sky is not blue and there is no sky. Blue is the color of the atmosphere, and when seen in the miles deep overhead, or condensed in a jar, it shows its own true color. So, looking into this inconceivable canon, the true color came out most beauteously. There was a background of red and yellowish rocks. These made the cold blue blush with warm color. The sapphire was backed with sardonyx, and the bluish white of the chalcedony was half pellucid to the gold chrysolite behind it. G.o.d was laying the foundation of his perfect city there, and the light of it seemed fit for the redeemed to walk in, and to have been made by the luminousness of Him who is light.

One great purpose of this world is its use as significant symbol and hint of the world to come. The communication of ideas and feelings there is not by slow, clumsy speech, often misunderstood, originally made to express low physical wants, but it is by charade, panorama, parable, and music rolling like the voice of many waters in a storm.

The greatest things and relations of earth are as hintful of greater things as a bit of float ore in the plains is suggestive of boundless mines in the upper hills. So the joy of finding one lost lamb in the wilderness tells of the joy of finding and saving a human soul. One should never go to any of G.o.d's great wonders to see sights, but to live life; to read in them the figures, symbols, and types of the more wonderful things in the new heavens and the new earth.

The old Hebrew prophets and poets saw G.o.d everywhere in nature. The floods clap their hands and the hills are joyful together before the Lord. Miss Proctor, in the Yosemite, caught the same lofty spirit, and sang:

"Perpetual ma.s.ses here intone, Uncounted censers swing, A psalm on every breeze is blown; The echoing peaks from throne to throne Greet the indwelling King; The Lord, the Lord is everywhere, And seraph-tongued are earth and air."

THE YELLOWSTONE PARK GEYSERS

THEIR ESSENTIAL FACTS AND CAUSES

I have been to school. Dame Nature is a most kind and skillful teacher. She first put me into the ABC cla.s.s, and advanced me through conic sections. The first thing in the geyser line she showed me was a mound of rock, large as a small c.o.c.k of hay, with a projection on top large as a shallow pint bowl turned upside down. In the center of this was a half-inch hole, and from it every two seconds, with a musical chuckle of steam, a handful of diamond drops of water was ejected to a height of from two to five feet. I sat down with it half an hour, compelled to continuous laughter by its own musical cachinnations.

There were all the essentials of a geyser. There was a mound, not always existent, built up by deposits from the water supersaturated with mineral. It might be three feet high; it might be thirty. There was the jet of water ejected by subterranean forces. It might be half an inch in diameter; it might be three hundred feet, as in the case of the Excelsior geyser. It might rise six inches; it might rise two hundred and fifty feet. There was the interval between the jets. It might be two seconds; it might be weeks or years.

[Ill.u.s.tration: Formation of the Grotto Geyser.]

A subsequent lesson in my Progressive Geyser Reader was the "Economic."

Here was a round basin ten feet in diameter, very shallow, with a hole in the middle about one foot across. The water was perfectly calm.

But every six minutes a sudden spurt of water and steam would rise about thirty feet, for thirty seconds, and then settle economically, without waste of water, into the pool, sinking with pulsations as on an elastic cus.h.i.+on a foot below the bottom of the pool. One could stride the opening like a colossus for five and one half minutes without fear.

He might be using the calm depth for a mirror. But stay a moment too long and he is scalded to death by the sudden outburst.

The next lesson required more patience and gave more abundant reward.

I found a great raised platform on which stood a castellated rock, more than twenty feet square, that had been built up particle by particle into a perfect solid by deposits from the fiery flood. In the center was a brilliant orange-colored throat that went down into the bowels of the earth. That was not the geyser--it was only the trump through which the archangel was to blow. I had heard the preliminary tuning of the instrument.

The guide book said the grand play of this "Castle" geyser began from eight to thirty hours after a previous exhibition, and was preceded by jets of water fifteen to twenty feet high, and that these continued five or six hours before the grand eruption. I hovered near the grand stand till the full thirty hours and the six predictive hours were over, and then, as the thunder above roared threateningly and the rain fell suggestively, I took a rubber coat and camped on the trail of that famous spouter.

Geysers are more than a trifle freaky. "Old Faithful" is a notable exception. Every sixty-five minutes, with almost the regularity of star time, he throws his column of hissing water one hundred and fifty feet high. Others are irregular, sometimes playing every three hours for a few times, and then taking a rest for three or more days. This Castle geyser is not registered to be quiet more than thirty hours, nor to indulge in preparatory spouts for more than six hours. When I finally camped to watch it out all these premonitory symptoms had been duly exhibited. I first carefully noted the frequency and height of the spouts, that any change might foretell the grand finale. There were ten spouts to the minute, and an average height of twenty feet.

Hours went by with no hint of a change: ten to the minute, twenty feet in height. People by the dozen came and asked when it would go off. I said, "Liable to go any minute; it is long past due now." Stage loads of tourists, scheduled to run on time, drove up, waited a few minutes, and drove on, as if the grand object of the trip was to make time--not to see the grandeur they had come a thousand miles to enjoy. A photographer set up his camera to catch a shadow of the great display.

He stood, sometimes air-bulb in hand, an hour or two, then folded his camera tent and stole away. Five hours had pa.s.sed and night was near.

Everybody was gone. I lay down on the ground to convince myself that I was perfectly patient. I attained so nearly to Nirvana that a little ground squirrel came and ran over me, kissing my hand in a most friendly way.

Six hours of waiting were nearly over when, without a single previous hint of change, one descending spout was met by an ascending one, and a vast column of hissing water rose, with a sound of continuous thunder, one hundred feet in air; and stood there like a pillar of cloud in the desert. The air throbbed as in a cannonade, and the sun brushed away all clouds as if he could not bear to miss a sight he had seen perhaps a million times. Then the top of this upward Niagara bent over like the calyx of a calla, and the downward Niagara covered all that elevated masonry with a rus.h.i.+ng cascade. s.h.i.+fting my position a little, I could see that the sun was thrilling the whole glorious outpour with rainbows. At such times one can neither measure nor express emotions by words. In the thunder which anyone can hear there is always, for all who can receive it, the ineffably sweet voice of the Father saying, "Thou art my beloved son, and all this grand display is for thy precious sake."

In sixteen minutes the flow of waters ceased, and a rush of saturated steam succeeded. At the same time the fierce swish of ascending waters and of descending cascades ceased, and a clear, definite note, as of a trumpet, exceeding long and loud, was blown. No archangel could have done better. As the steam rolled skyward it was condensed, and a very heavy rain fell on about an acre at the east as it was drifted by the air. It looked more like lines of water than separated drops. I found it thoroughly cooled by its flight in the upper air.

I climbed the huge natural masonry, and stood on the top. I could have put my hand into the hot rus.h.i.+ng of measureless power. What a sight it was! There were the brilliant colors of the throat, open, three feet wide, and the dazzling whiteness of the steam. At thirty-two minutes from the beginning the steam suddenly became drier, like that close to the spout of a kettle, or close to the whistle of an engine. All pure steam is invisible. At the same time the note of the trumpet distinctly changed. The heavy rain at the east as suddenly stopped.

The air could absorb the present amount of moisture. One could see farther down the terrible throat that seemed about to be rent asunder.

The awful grandeur was becoming too much for human endurance. The contorted forms of rocks on the summit began to take the forms and heads of dragons, such as the Chinese carve on their monuments. The awful column began to change its effect from terror to fascination, and I knew how Empedocles felt when he flung himself into the burning Aetna. It was time to get down and stand further off.

[Ill.u.s.tration: Bee-Hive Geyser.]

The long waiting had been rewarded. "To patient faith the prize is sure." The grand tumult began to subside. It was beyond all my expectations. Nature never disappoints, for she is of G.o.d and in her he yet immanently abides. The next day the sky and all the air were full of falling rain. How could it be otherwise? It was the geyser returning to earth. I sought the place. The awful trumpet was silent, and the steam exhaled as gently as a sleeping baby's breath.

Only one more lesson will be recited at present. I had just arrived in camp when they told me that the Splendid geyser, after two days of quiet, was showing signs of uneasiness. I immediately went out to study my lesson. There was a little hill of very gentle slopes, a little pool at the top, three holes at the west side of it, with a dozen sputtering hot springs scattered about, while in a direct line at the east, within one hundred and forty feet, were the Comet, the Daisy, and another geyser. The Daisy was a beauty, playing forty feet high every two or four hours. All the slopes were constantly flowing with hot water. This general survey was no sooner taken than our glorious Splendid began to play. The roaring column, tinted with the sunset glories, gradually climbed to a height of two hundred feet, leaned a little to the southeast, and bent like a glorious arch of triumph to the earth, almost as solid on its descending as on its ascending side.

No wonder it is named "Splendid."

Whoever has studied waterfalls of great height--I have seen nearly forty justly famous falls--has noticed that when a column or ma.s.s of water makes the fearful plunge smaller ma.s.ses of water are constantly feathered off at the sides and delayed by the resistance of the air, while the central ma.s.s hurries downward by its concentrated weight.

The general appearance is that of numerous spearheads with serrated edges, feathered with light, thrust from some celestial armory into the writhing pool of agonized waters below. In the geyser one gets this effect both in the ascending and in the descending flood.

Four times that first night dear old Splendid lured me from my bed to watch her t.i.tanic play in the full light of the moon. During all this time not a hot spring ceased its boiling, nor a smaller geyser its wondrous play, for this gigantic outburst of power that might well have absorbed every energy for a mile around. Obviously they have no connection. Then my beloved Splendid settled into a three-days' rest.

These are the essential facts of geyser display. There are very many variations of performance in every respect, I have seen over twenty geysers in almost jocular, and certainly in overwhelmingly magnificent, activity.

"To him who in the love of nature holds Communion with her visible forms, she speaks A various language."

WHAT ARE THE CAUSES?

What is the power that can throw a stream of water two by six feet over the tops of the highest skysc.r.a.pers of Chicago? It is heat manifested in the expansive power of steam. Scientists have theorized long and experimented patiently to read the open book of this tremendous manifestation of uncontrollable energy. At first the form and action of a teakettle was supposed to be explanatory. Everyone knows that when steam acc.u.mulates under the lid it forces a gentle stream of water from the higher nozzle. This fact was made the basis of a theory to account for geysers by Sir George Mackenzie in 1811. But to suppose that nature has gone into the teakettle manufacturing business to the extent of thirty such kettles in a s.p.a.ce of four square miles was seen to be preposterous. So the construction theory was given up.

But suppose a tube (how it is made will be explained later), large or small, regular or irregular, to extend far into the earth, near or through any great source of heat resulting from condensation, combustion, chemical action, or central fire. Now suppose this tube to be filled with water from surface or subterranean sources. Heat converts water, under the pressure of one atmosphere, or fifteen pounds to the square inch, into steam at a temperature of two hundred and twelve degrees. But under greater pressure more heat is required to make steam. The water never leaps and bubbles in an engine boiler.

The awful pressure compels it to be quiet. A cubic inch of water will make a cubic foot--one thousand seven hundred and twenty-eight times as much--of steam under the pressure of one atmosphere. But under the pressure of a column of water one thousand feet high, giving a pressure of four hundred and thirty-two pounds to the square inch at the bottom, water becomes steam, if at all, only by great heat. Every engineer knows that the pressure exerted by steam increases by great geometrical ratios as the heat increases by small arithmetical ratios. Steam made by two hundred and twelve degrees exerts a pressure, as we have said, of fifteen pounds.

To simply double the two hundred and twelve degrees of heat increases the steam pressure twenty-three times.

Now suppose the subterranean tube or lake of Old Faithful to be freshly filled with its million gallons of water. Sufficient heat makes steam under any pressure. It rises up the tube and is condensed to water again by the colder water above. Hence no commotion. But the whole volume of water grows hotter for an hour. When it is too hot to absorb the steam, and the tube is too narrow to let the amount made bubble up through the water, it lifts the whole ma.s.s with a sudden jerk. The instant the pressure of the water is taken off in any degree, the water below, that was kept water by the pressure, breaks into steam most voluminously, and the measureless power floods the earth and sky with water and steam.

It is also known that superheated steam suddenly takes on such great power that no boiler can hold it. Once let the water in a boiler get very low and no boiler can hold the force of the resultant superheated steam. The same heat that, applied to water, gives perfect safety, applied to steam gives utter destruction. Hence the amazing force of the vast jets of the geyser that follow the first spurts.

As soon as the steam is blown off the subterranean waterworks fill the tube and the process is repeated.

This modus operandi was first proposed as a theory by Bunsen in 1846, and later was demonstrated by the artificial geyser of Professor J. H.

J. Muller, of Freiburg.

[Ill.u.s.tration: Pulpit Terrace and Bunsen Peak.]

MOUNDS OF MINERAL DEPOSITS

I have the extremely difficult task of representing emotions by words--glories of color and form seen by the eye by symbols meant to be addressed to the ear. Before seeking to describe the diverse colors made largely by one substance, let us remember that while silica, the princ.i.p.al part of these water-built mounds, is one of the three parts of granite, namely, the white crystal quartz, it is also the substance of the beautifully variegated jasper, the lapis lazuli, the green malachite, and the opal, with its cloudy milk-whiteness through which flashes its heart of fire. Silica and alumina combine to make common clay, but alumina forms itself into the red ruby, the golden-tinted topaz, the violet oriental amethyst, the red, white, yellow, and violet sapphire, and the beautiful green emerald. With substances of such rare capabilities we may expect rich results in color and form.

We turn now to deposits from water of these two substances, especially the first. About the Old Faithful geyser is a mound about one hundred and forty-five feet broad at the base, twelve feet high, jeweled over with pools of beauty of every shape, beaded and fretted with glories of color never seen before except in the sky. How were they made?

Water is a general solvent. It can take into its substance several similar bulks of other substances without greatly increasing its own, some actually diminis.h.i.+ng it. Hot alkaline water will dissolve even silica rock. When water is saturated with sugar, salt, or other substance, if a little or much water is evaporated some of the saturating substance must be deposited as a solid. All crystals, as quartz or diamonds, have been made by deposits from water. Hot water can hold in solution much more of a solid than cold water. Therefore, when hot water comes out of the earth and is cooled, some of the saturating substance must be deposited as a solid. It is done in various ways, especially two.