Wheeling his pony, Old Billee rode back with the boy ranchers, until they reached the bottom of the reservoir wall. Then, dismounting, Bud, Nort and Dick scrambled up the earth slope on one side until they could look into the storage tank, and at the pipe which, connecting with the old underground water-course, kept the reservoir filled.
"She isn't spouting!" said Bud, in blank disappointment.
"Just a dribble," added Nort, mournfully.
"And if it does as it did before that'll stop in a little while," remarked Dick.
"When did it start to stop?" asked Bud, unconscious of the double meaning of his words.
"About an hour ago," Old Billee answered. "I happened t' notice it when I come up here t' try for a fish."
"Fish!" cried Nort. "Can you get any fishhere?"
"Sartin sure!" asserted the old cowboy. "They come in from th' river, under th' mountain, though how they like the dark I can't say, an' they come out of this pipe. I've caught many a good one."
The eastern lads looked to Bud for confirmation, and their cousin, nodded, rather gloomily, though.
"Yes," said Bud, "fish do come through the pipe. But if we don't get any more water they'll all die off soon."
"Maybe the water will come back—as it did before," asserted Dick.
Bud did not answer. He appeared to be figuring out something on the back of an old envelope with the stub of a pencil.
"We'll have enough for a week, I think," finally announced the boy rancher. "Then, if the water doesn't come back, we'll have to drive all the stock over to Diamond X. Can't take a chance letting 'em die of thirst here, even if they didn't stampede, which they'd be sure to do."
Two things are vitally necessary on a ranch—grass and water for the stock. Of grass there was plenty in Flume Valley, and, had the stream continued to come through the pipe, there would have been a goodly supply of water, even for the extra stock added from Square M.
But when no fluid spurted from the mouth of the black pipe, the other end being hidden in the opening of the natural water course, it spelled ruin for Diamond X Second.
"I wonder—I just wonder—if this has anything to do with the threat we received?" mused Bud, as he and his cousins went down the slope to the little table of land where the tents were pitched.
"Granting that it has, who sent the warning?" asked Nort.
"Who else but the man who doesn't want to see any water diverted from Pocut River?" asked Bud, in turn. "I mean Hank Fisher, and the gang he trails along with! If anyone stopped this water, he did!"
"But how?" asked Yellin' Kid, who had strolled up to take part in the general conversation. "He couldn't do it at th' river end of th' pipe, without bein' found out, and he hasn't been aroundhere, I'll gamble on that—not since we started keepin' watch at night."
"No, he hasn't been here," admitted Bud, slowly. "It sure is a puzzle. Well, let's have grub, and talk about it later. It may come back. If it doesn't we have enough for a week—maybe longer."
It was drinking water for the cattle that was mostly needed, since the occasional, slight rainfall was now sufficient to provide for the grass, though some water was used to irrigate certain sections that would be called "meadows" in the east. This drinking water was conducted to distant troughs by pipes running from the reservoir, the pipes being controlled by means of valves, or water gates.
Had there been natural water-holes in Flume Valley it would, long ago, have been used as a place to raise cattle. But it was the absence of drinking places that caused it to be passed by, until, by artificial means, tapping the river through the underground course, Mr. Merkel had enabled his son and nephews to become boy ranchers in earnest.
As Bud had stated, there was about a week's supply on reserve in the concrete reservoir. When that was exhausted, unless the water again started flowing through the pipe, the cattle would suffer from thirst.
"Well, she isn't spouting any," mournfully remarked Nort, as, with his brother and Bud, he ascended the slope, standing on the edge of the reservoir.
"No," agreed Bud. "She's as dry as an old buffalo skull now. I don't know what to do!"
The shadows of dusk were falling, and the boys felt that the night was coming with its gloom to match their own feelings. Failure seemed to stare them in the face.
"But I don't see how anyone—granting that somebody like Hank Fisher or Del Pinzo has it in for us—can shut off the water without operating at either end of the flume!" exclaimed Nort.
"That is queer," agreed Bud. "I wonder what's inside that tunnel where the old watercourse runs? I've been through it, but couldn't see much of anything. I've a good notion——"
He broke off his remarks to gaze intently ahead. There was a movement in the gloom, and a figure walked away.
"Who's there?" asked Bud sharply, his hand slipping to his .45.
"It's me," came quickly, if not grammatically, from Pocut Pete, whose voice the boys recognized. "I just moseyed up here t' see if she was runnin'."
"Well, she isn't," spoke Bud, a bit shortly.
"So I see," came the drawling answer, and it was followed by a faint tinkling of glass.
Bud started, and tried to pierce the night shadows. But all he saw was the figure of the strange cowboy becoming more and more indistinct. Bud was just going to say something when he was halted by the voice of Nort.
"I have an idea!" exclaimed the eastern lad.
"What is it?" asked his brother. "Anything to do with this?" and he waved toward the reservoir which was strangely still, now that the water no longer bubbled into it from the pipe.
"Yes," went on Nort. "Why not investigate and see where the stoppage is, Bud?"
"Investigate what?"
"The pipe line—the old underground water-course."
"You mean go through the tunnel?" Bud asked.
"Sure! Why not? You say it's big enough all the way through, and the water itself doesn't occupy much of the bottom. We could walk it in a day, easy!"
"Yes," agreed Bud, "it isn't more than five miles, though we'd have to carry lanterns, and we might get lost in some side passage."
"That's just what I want to find out about!" cried Nort. "If thereisa branch passage maybe that's where the water goes! Come on, Bud, let's go through the tunnel!"
"I'm with you!" said Dick.
For a moment Bud hesitated and then, as he was about to reply, there came the sudden sound of a shot, which shattered the night with a sliver of flame, plainly visible to the boys.
Instantly a band of coyotes set up their weird howling, and the startled steers lowed and bellowed as they rushed about.
"What's that?" cried Bud.
"Who's there?" demanded Nort.
The hand of Dick went toward the .45 he wore in a holster at his belt, and, it might be added, the hands of the others did also.
"Keep your shirts on," came the somewhat drawling voice of Pocut Pete, who, it seemed, had returned after shuffling off in the darkness. "I just winged a coyote."
"Oh," murmured Bud. "You were shooting at them, were you?" he asked.
"Not exactly," answered Pocut Pete, as he sauntered up out of the gloom. "I saw something movin' down among th' cattle, an' I knew it couldn't be any of you fellows, so I let go at him."
"Him!" cried Nort. "Was it a man?"
"Looked like one," drawled Pete. "I heard you'd had trouble with rustlers before I came, so I wasn't takin' any chances. I didn't aim t' hit him, though, only t' scare him, an' I must have winged one of them night-owls!" He chuckled at this characterization of the coyotes.
"Let's take a look down there," suggested Bud to his cousins, their worried interest in the stoppage of the water momentarily eclipsed by the new excitement.
"Oh, you won't find anyone down therenow!" Pocut Pete made haste to say. "If it was a rustler he's far enough off bythistime, an' I'm not positive I really saw one—it was so dark."
"It won't do any harm to take a look," declared Bud, and his cousins were of the same opinion.
"Suit yourself," spoke Pete, easily. "If I did hit him let me know."
Again he moved off in the darkness, and the boy ranchers, after a moment of hesitation, started in the direction whence the shot had been heard and the sliver of flame seen. Pocut Pete had gone on the opposite trail after returning to the boys, a fact which caused Dick to remark:
"Wouldn't you think he'd want to see if he did wing anybody?"
"He knows well enough he didn't," declared Bud in a low voice, for he and the others realized that sounds, especially voices, carried almost as clearly in the night air as across a body of water.
"What made him talk that way then?" asked Nort.
"Oh, he's—queer, I guess," replied Bud. "I don't exactly just like the way he acts. Did you fellows hear the tinkle of glass just before that shot?"
"I did," answered Nort, but Dick was not so sure. "What do you make of it?" Nort wanted to know.
"Wish I knew," spoke Bud, and then he told them about having found the small, thin, broken phial of dubious-smelling mixture in the bunk tent of the older cowboys.
"Do you think he takes 'dope,' or medicine of some sort?" asked Dick.
"It's hard to say," was Bud's reply. "But let's look around and see what we can find."
Their search was unrewarded, however. The cattle quieted down after the shot, and the coyotes only occasionally gave vent to their blood-curdling yells. But as for finding anyone who had been shot—including even a miserable coyote—there was not a sign.
"Guess Pete didn't wing anybody after all," mused Dick, as he and his chums turned back toward the camp.
"I never s'posed he did," grunted Bud. "He's a four-flusher, that fellow is, in my opinion. I wish dad had sent me somebody else."
"He's a good cowboy," defended Nort.
"Yes, but I don't feel that I can trust him. I'd rather have one like Old Billee, slow as he is, than two Pocut Pete chaps," grumbled the boy rancher. "But we've got other worries besides him, fellows! What are we going to do for water, now that we have a double supply of cattle at our ranch? That's what's worrying me!"
"It's enough to worry anyone," Dick agreed. "Maybe the water will come back, Bud."
"I hope it does," added Nort.
"We'll take a stroll through that tunnel—it's the only way to find out what's wrong," decided Bud. "Talk about black rabbits! I begin to think Old Billee was more right than wrong!"
"But your bad luck, so far, isn't as bad as your father's in losing cattle from disease," remarked Nort.
"No, and I hope that the epidemic doesn't break out here at Diamond X Second," went on Bud. "If it starts, and we don't get the water back, we may as well give up!"
He was plainly discouraged, and no wonder. He was young, and it was his first experience as a rancher "on his own." Nort and Dick, too, were a little down-hearted.
"But maybe things will look better to-morrow," suggested Nort, as they turned in for the night, having discovered nothing alarming in the direction where Pocut Pete had shot.
"Maybe," half-heartedly assented Bud.
But there was no water coming through the reservoir end of the tunnel pipe when the sun shone again, and, after breakfast, the boy ranchers prepared to explore the dark cave-like opening which extended under the mountain.
"I hope we can turn it on," said Bud, and he looked at the concrete basin of water, trying to calculate how much longer it would last if the supply were not replenished. Already it was lower than it had been the night before, for the cattle had drunk freely during the darkness.
Lanterns were gotten ready, a supply of grub packed, weapons were looked to (for who knew what beast might not lurk in the tunnel?) and at last the boy ranchers were ready to start.
"Good luck!" wished Yellin' Kid as the little party started for the mouth of the tunnel.
"Thanks," chorused Nort, Dick and Bud.
Then they entered the black opening.
If you will imagine a hillside, with a hole, or tunnel, about ten feet high and as broad, but of irregular shape, opening into it, and on the bottom, or floor, a two-foot iron pipe out of which, at normal times, ran a stream of water, you will have a good idea of the place into which our young heroes were to enter.
The tunnel extended all the way through Snake Mountain, curving this way and that, as a brook curves its way through a meadow. In fact the tunnel had been made, centuries ago, by a stream forcing its way through the soft parts of the mountain, and it was this old, hidden, underground stream-way of which Mr. Merkel had taken advantage to bring water to Flume Valley.
The stream flowed along the bottom of the tunnel course, leaving room on either side for persons to walk, as they might walk along the banks of a stream in the open. The underground river was not more than four feet wide, and about the same in average depth, but in places it flowed with a very powerful current.
"Whew! It's black as tar here!" exclaimed Dick, as they walked in past the pipe, and found themselves in the tunnel proper.
"As bad as the Hole of Calcutta," added Nort, who had read that grim story of the Sepoy rebellion in India.
"Do you want to back out?" asked Bud, swinging his lantern so that it cast flickering shadows on the place where water had flowed, but where there was none now.
"Back out!" cried Nort. "I should say not! Lead on, Macduff!"
And they started off in the blackness of the tunnel, with only the faint gleams of the lanterns to illuminate their way. What would they find?
Echoes of the footsteps of the boy ranchers sounded and resounded as they tramped along the now dry water-course of what had, only a day before, been a life-giving stream of water. The rocky and roughly-vaulted roof overhead gave back the noises like the soundbox of a phonograph, and the lads had to speak loudly, in places, to make their voices carry above the echoes. These places were spots where the vaulted roof of the tunnel was higher than usual.
They had walked on, the semi-circular spot of light at the entrance near the black pipe growing more and more faint, until it was not at all visible.
"There she goes!" exclaimed Dick, looking back.
"What?" asked his brother.
"The last gleam of daylight," was the answer. "If anything happens to our lanterns, so that they go out, and we get mixed up in some branch passages—good night! That's all I have to say!" and Dick was very emphatic in this.
"By Zip Foster!" exclaimed Bud, using that expression for the first time in several days. "You're a cheerful chap to have along on a picnic like this, Dick! Not!"
"Well, might as well prepare for the worst and hope for the best," laughed Dick, while Nort inquired:
"Why don't you tell us more about Zip Foster?"
"Oh—you—say, did you hear anything then?" asked Bud, and his voice had in it such a note of anxiety that his companions did not, at the time, imagine he might have been putting them off from a much-wanted and often-delayed explanation of this mysterious Zip Foster personage.
"Hear what!" asked Dick.
"Something like water running," replied Bud. "I have a notion that our stream—I call it ours for it doesn't seem to belong to anyone else—our stream may just trickle off, now and then, into some other underground course."
"Maybe it does," agreed Dick. "But I don't hear any water running."
"Nor I," added his brother.
"Maybe I was mistaken," Bud admitted. "But I sure would like to come across that missing water of mine!"
He little realized, nor did the others, what fruit his wish was to bear, and that very shortly.
"I guess what you heard was the echoes," spoke Dick. "I never heard so many queer noises."
"It's like the cave of the winds," murmured Nort. "But it's a great adventure all the same, Bud! I mean it would be great if we didn't have to worry about the water not coming back," he made haste to add, for he realized what it would mean to their new ranch in Flume Valley if no drink could be had for the cattle.
"It beats the finding of the Triceratops all to slathers!" exclaimed Dick, "and that was no slouch of a happening, either."
"Yes, no telling what's ahead of us," spoke Bud, as he walked along, unsteadily enough for the way was rough and filled with stones. And, as the boys tramped along in the tunnel, part of the time in the very bed of the stream that had gone dry, their lanterns cast fantastic shadows on the rocky walls. I have said that the stream was dry, but this was not strictly true, for in places, where the uneven bed formed depressions, there were pools of water. And, in some places, there were even little rills trickling along. But they never would reach the iron pipe that discharged into the reservoir.
On and on tramped the boys, pausing, now and then, to hold up their lanterns and inspect the rocky walls of the underground tunnel which echoed so strangely to their footsteps, and through which swept strange, cold and clammy winds.
"Well, I reckon we'll have to go all the way to the end before we discover anything, if we do find it," said Bud, when they had walked on for over an hour. Their pace was slow because of the uneven footing.
"And when we get to the other end and find the water running into the pipe at the dam in Pocut River, what then?" asked Nort.
"We'll hardly find that, I think," said Bud. "Or, I mean, we won't have to go all the way to the other end if the water is found running there."
"Why not?" asked Dick.
"Because, if the water's running in from the dam end of the pipe, we'll meet the stream before we get all the way through the tunnel," Bud explained. "I meant to call up on the telephone and find out if everything was all right at the river end before we started out, but I forgot. My theory is that the stream gets into this tunnel from the river all right, but is shunted off before it reaches us," he added.
"How shunted?" Dick wanted to know.
"That's what I can't tell," spoke Bud. "But why try to puzzle this out until we get something better to work on? I'm hungry! What do you say that we eat?"
"Suits me," agreed Nort.
"I'm not going to vote in the negative," asserted Dick.
They judged that they were about a quarter way through the mysterious tunnel now, and, setting down the lanterns on the rocky floor, the boy ranchers took out the food they had brought with them. It would be risky to kindle a fire in that enclosed place, Bud decided, as the smoke might choke them, though so far they had found an abundance of fresh air, a current blowing part of the time in their faces, and part of the time in the opposite direction. This proved that there was a good draft in the elongated cave, but it was voted best not to take any chances, though there was plenty of dried driftwood on the tunnel floor, and this could have been used for a blaze.
But the boys sat about in the gleam of their lanterns, and, while they ate the sandwiches they had brought, they talked of the strange happenings that had led up to this venture in which they were now joined.
Suddenly Bud, who had just taken up a piece of fruit cake, part of a chunk that his pretty sister Nell had sent over from the main ranch house a day or so before, stopped chewing in order to listen better; for, as you doubtless know, the action of the jaws precludes keen attention to outside sounds.
"What's the matter?" asked Dick, noting his cousin's act.
"I heard something," Bud answered.
"I'm hearing things all the while!" declared Dick. "This is the most weird place for mysterious noises I ever struck!"
"But this is different," insisted Bud. "Listen!"
Nort and Dick stopped chewing and strained their ears to catch the sound that had attracted Bud's attention. A strange, rushing, whispering echo seemed to fill the tunnel.
"Doesn't that sound like rushing water?" asked Bud.
"Yes," agreed Dick, after a moment of intentness; "it does."
"Look out!" quickly yelled Nort. "Itiswater, and on the rush, too! Jump for your lives! It's a flood!" and making a grab for one of the lanterns, that they might not be left in total blackness, he sprang toward the rocky side of the tunnel, an example followed by his companions.
And the rush of waters filled the underground cave with a mighty, roaring sound.
Stumbling, slipping, sliding, half-falling, bruising themselves on the sharp rocks, but ever leaping forward toward the sides of the tunnel, and away from the depressed centre down which they could see the rush of waters coming, the boy ranchers at last managed to reach the granite wall. Nort had succeeded in grabbing up one of the lanterns, but there was no time for Dick or Bud to take one, and the food had to be abandoned.
"Climb up! Climb up, if there's a ledge!" shouted Bud. "We'll be drowned if we can't get above the water!"
He had, somehow or other, brought up in the rear. Though he did not admit it, this was because he had shoved his cousins ahead of him, hoping thus to enable them to gain a safe place.
And as Nort and Dick glanced back they saw, in the gleam of the one lantern left alight, a white mass of water bearing down on them, and, seemingly, filling the tunnel from wall to wall, as it rushed foaming and murmuring onward.
It was as though a dam had suddenly burst, or some obstruction had been removed, allowing the pent-up waters to rush along the accustomed channel. And if you have ever noticed a dammed-up stream, say in some gutter, thus quickly released, you can imagine what happened on a larger scale in the tunnel where the boys were.
The water, normally, flowed only in the four-foot channel. But now it spread out on either side, and, of course, was much deeper in the centre. But as the tunnel sloped from either wall, in a sort of V shape to the centre channel, naturally the parts nearest the side walls were less covered by water than the others.
It was because of this that Bud, Nort and Dick were enabled to maintain a footing, though they were knee-deep in water in an instant, and the one remaining lantern had to be held up to prevent it from being engulfed and extinguished in the sudden flood.
"Climb up! Climb up!" shouted Bud. "Isn't there some place—some rocky ledge—where you can find a footing? The water's getting deeper!"
And this was true. Either the flood was growing at its source (a place as yet unknown to the boys) or it was running too rapidly, and in too great a volume, to accommodate itself to the tunnel channel, and was thus piling up in the vicinity of the boys.
"What happened? What caused it?" cried Nort.
"Never mind that—now!" shouted Bud. "Find the highest place you can, and stick!"
"Suppose the whole tunnel fills?" asked Dick, trying to pierce the semi-gloom, and look for a refuge on the rocky wall.
"If it does we'll have to swim for it," grimly said Bud. "But isn't there some place where you can climb up?"
"This looks like a ledge," Dick answered, as he caught sight of a darker shadow on the rocky wall of the tunnel, above his head, when his brother swung the lantern.
"Just what we need!" exclaimed Bud, as he waded through the ever-deepening water to the side of his cousins. "Up with you! Here, Nort, I'll hold the lantern until you make it!"
Thus, again, Bud was seeing that his cousins reached a place of comparative safety before he looked to himself. For they found the ledge, once they had scrambled up to it, well above the water, and wide enough to give shelter and a safe perch for all three.
"Whew! That was touch and go!" murmured Bud, as he leaned back, half exhausted, against the rocky wall at the rear of the ledge.
"I should say so!" gasped Dick. "It all happened so suddenly that I don't know yet what it was all about."
"The stream suddenly started flowing again," spoke Bud. "That's all there was to it. Must have been dammed up some place, and suddenly released. It's still rising, too," he added, as he leaned forward and held the lantern down over the ledge where he and his cousins had taken refuge.
"Rising?" sharply inquired Nort, and there was a tone of anxiety in his voice.
"Yes," remarked Bud, as he swung the lantern to and fro. "We didn't get up here any too soon, fellows! Look, the water would be up to our waists down there now, in the most shallow place, and it's got speed like one of Christy Mathewson's curves!"
His cousins could see that he had not exaggerated the matter. The waters were rising. Inch by inch, and foot by foot, the flood was approaching the crest. Where the boy ranchers had sat in the almost dry bed of the stream, to eat their lunch, there was now a mad race of swirling waters. Where they had stood, before climbing up to the ledge of safety, there was now three feet depth of water. And, as Bud had said, it was flowing along so swiftly, like the stream which turns a mill-wheel, that the boys could hardly have been able to keep their feet had they been down in the current, or even on the weakest edge of it.
But, as they were, they were safe for the time being. How long that would be the case none could tell. They could see, in the gleam of the one lantern saved in the mad rush, that the stream was coursing along as it had never coursed before.
"There must be a powerful lot of water coming out of the reservoir pipe," Nort remarked.
"Biggest ever, with all this water behind forcing it out," agreed Bud. "I hope the pipe holds."
"It isn't as if the pipe were the only outlet," said Dick. "You know the water can flow out of the tunnel above, and on either side of the conduit."
"Yes," agreed Bud, "and dad had it put in that way on purpose, so if ever a big flood did come, the tunnel could relieve itself without ripping away the pipe and reservoir. There's a sort of spillway at one side of the reservoir, you know."
The boys from the east had noticed this. Up to now no water had run off through this auxiliary channel, but it was there for emergencies such as now had occurred. And the water could find a vent and outlet down the middle of Flume Valley, as, indeed, the surplus from the reservoir itself did, when there was any.
"Well, it sure is queer, and we had a mighty narrow escape," remarked Nort, as Bud leaned back again with the lantern. "But the fellows back at the camp will be scared."
"I reckon they will," admitted Bud. "They'll see the water spouting out, in a greater volume than ever before, and they'll imagine all sorts of things have happened to us."
"Well, nothing has happened yet—except we've lost two perfectly good lanterns, and what grub we didn't eat," asserted Nort.
"But something else may happen," said Bud in a low voice, as, once more, he leaned forward, and again held the lantern over the edge of the rocky ledge.
"What?" Dick wanted to know.
"Look," was what Bud replied. And his cousins, glancing down, saw that the waters were rising, rising, rising!
When would they stop?
Pressing back toward the rocky ledge, against which they leaned, gazing with fearsome eyes at the rising waters, on which the lantern-light shone fitfully, and almost holding their breaths at times, so great was the strain, the boy ranchers waited—for what they scarcely knew. And yet they did, in a measure.
For they waited to see if the waters would stop rising, a happening, as they well knew, which, alone, could save their lives.
As one of them had remarked, they might have to swim for it. But, looking at the foaming current, dashing along over jagged rocks on which the boys had more than once stumbled, they knew what a risk that effort to escape would bring.
And should the water fill the whole tunnel they would have no earthly chance!
For only a fish can exist in a hose or pipe completely filled with water, and that is what the tunnel would become if the water rose to the roof—merely a great, underground rocky pipe for the conveying of the liquid from Pocut River.
So you can easily imagine with what anxiety Bud, Nort and Dick watched the rising water. Every now and again one of them would lean over the ledge, swinging the lantern to and fro, so its gleams would be reflected in the hurrying, foaming stream, and indicate how fast it was rising.
At first the rate of rise had been rapid. But as the boys, again and again, made observations in the semi-gloom Bud, at length, uttered a joyful cry.
"Look!" he shouted, pointing with trembling finger at the foamy flood close, now, to the top of the ledge. "Look!"
"What—a big fish?" asked Dick.
"Fish nothing!" retorted his cousin. "But the water is going down! Look, it isn't as high as it was. I can see a wet mark where it came up to, and it's two inches below that now! The flood is going down!"
"Are you sure?" asked Nort, eagerly.
"Look for yourselves!" invited Bud, handing over the lantern.
Nort's observation was confirmatory of his cousin's.
"Sheisgoing down!" remarked Nort. "And just in time, too!"
How truly he spoke was evidenced by that fact that another inch of rise would have sent the flood over the ledge on which the boys rested!
So narrow had been their escape!
"If she only doesn't begin to rise again, after she starts going down—as you say she is—we'll be all right," said Dick. "But if she comes up——"
He did not finish what he started to say, but his companions knew what he meant, and they looked each other in the face with grave apprehensions.
"The question is now," went on Bud, as he again took an observation and noted that the flood was still on the descent, "how long we shall have to stay here."
"If it's too long we'll be wanting some of that grub which was washed away," asserted Diet. "In fact I dropped a sandwich half eaten."
"Same here," remarked his brother. "But let's hope that it will go down as suddenly as it came up."
That was all they could do—hope; but it bore fruits, for in about an hour, as they ascertained by glances at their watches, the flood was almost down to the normal channel of the underground stream.
"And if it will only stay there we can venture to keep on to the other end of the tunnel," spoke Bud.
"Will you do that?" Dick wanted to know.
"Why not?" asked Bud. "We want to see what happened, and where this water goes to when it disappears so suddenly; don't we?"
"Yes," agreed Dick. "But I thought, after our escape, that we had better head back for camp."
"It's about six of one and half a dozen of the other," asserted Bud. "We're almost half way through the tunnel, now, and we might as well keep on. I'd like to solve this mystery, and we can't if we call it off now."
"That's right," assented Nort. "We don't run any more danger going on to the river end of the tunnel than we would in going back to the camp end. That is unless we discover a big cavern, or hole through to China, in the other end of the tunnel. Even then we might be able to skirt around it."
"Let's go on!" suggested Bud, as he prepared to climb down off the ledge. "This thing has my goat!"
"Speaking of goats is most appropriate on a cattle ranch," laughed Nort, and the spirits of all the lads were lighter now. "But let's keep on to the end for which we started!"
This was agreed to and, after waiting a little while to make sure that the waters were not again going to rise, away started the boy ranchers. They were traveling lighter now, for they only had one lantern, and no food to carry.
The remainder of the tunnel was as the first part had been—a great, uneven tube through the mountain, twisting and turning here and there, sometimes the roof being so high that it did not show in the swinging lantern-light, and again being low enough, almost, for the boys to touch.
On all sides was evidence that the flood had been here, as it had been at the place where the boys took refuge. Now and then they came to deep pools, which they had to skirt, and, in one case, leap over.
Suddenly, as they were walking along, the lantern which Bud was carrying went out, leaving them in pitch blackness!
"Hello! What's the idea?" asked Nort.
"Did you do it on purpose?" asked Dick.
"Why, no, of course not!" asserted Bud. "The oil must be gone, though I filled it before we started, and it ought to have burned longer than this."
"Whew! This is tough!" bemoaned Nort. "Left in the dark!"
"Not altogether!" exclaimed Bud. "I brought some candles!"
"Great!" voiced Nort. "Light up!"
Which Bud did, placing a short length of candle inside the lantern, by fastening it, with some grease that hardened, on top of the oil reservoir of the wick.
"But I can't understand what happened to the lantern," went on Bud, making an examination by means of a second candle, from the store he had, luckily, placed in his pocket. "Oh, yes, I can!" he went on.
"What?" asked Dick.
"One of the soldered seams of the lantern oil tank started, and the oil has leaked out. Guess one of us must have banged it against a stone when we made the rush. But we'll be all right. A candle in the lantern is nearly as good as the regular wick."
It was not quite so good, but the boys made the best of it as they tramped on through the tunnel, hoping to reach the river end without another flood, or any mishap.
"The water seems to be behaving very nicely," observed Nort, as they all saw that the stream was well within its rocky channel.
"But what gets me," said Bud, "is where it goes to—when it goes. I mean where does it disappear to? We haven't come to a single branch tunnel, or any other passage that could drain off the river water."
"That's right," agreed his cousins.
"But maybe we'll find it further on," suggested Nort.
"We'll soon know, for we must be close to the other end now," observed Bud. "Our candles are holding out well."
They had come several miles, as they knew by the time consumed. The way through the tunnel had been uphill all the way, as it must needs be to allow the water to run down to the reservoir in Flume Valley. But, so far, they had seen nothing to indicate any side channel for the stream—any place that might drain off the water, and return it in such a sudden volume as to cause a flood.
"I can't understand it," Bud remarked as he swung the lantern to and fro. "It sure is a puzzle. Where does the water disappear?"
His cousins could offer no solution. All the way along they had carefully scanned the underground stream, but there appeared no break in its uneven, rocky bank in the middle of the tunnel.
"Well, let's keep on," suggested Nort. "We aren't at the end yet, and it may be close to the intake—I mean the mysterious influence—that shuts off our water supply and turns it on again, may be there. Forward, march!" he cried gaily.
Together they started off, having come to a momentary halt to inspect a place wider and deeper than usual, when Bud suddenly came to a stop and exclaimed:
"Some one is coming!"
Instantly the boy ranchers came to a halt, standing there in the tunnel, beside the running water. They had nearly reached the other end of the flume, and could dimly see, ahead of them, a faint glow, which told of daylight to come. Bud, who was carrying the lantern, made shift to hide it behind the bodies of himself and his cousins, so that the unknown, approaching, might not have them at a disadvantage, he being in the dark.
"Who you reckon it is?" asked Nort. He and his brother were rapidly falling into the custom of using the picturesque if not always elegant talk of the west. Nort spoke in a whisper, and Bud answered in the same tone.
"Can't imagine who it may be," spoke the western lad, "but if it's Hank, Del Pinzo, or any of their gang——"
He did not finish, but a slight movement told that he was freeing his .45 in its holster, an example quickly followed by Nort and Dick.
Meanwhile the steps continued to approach, echoing loudly in the vaulted tunnel, as if the maker of them had no design to conceal his movements. In another few seconds the boys saw, looming in front of them, as displayed by the gleam of their half-hidden lantern, a bulky figure. At the same moment the figure seemed to become aware of the presence in the tunnel of others besides himself.
"Who's there?" came in sharp challenge.
And what a relief it was to the boy ranchers when they heard that voice.
"Slim!" cried Bud. "Slim Degnan!"
"That you, Bud?" called the foreman of Diamond X ranch, as he recognized the voice of his employer's son, while Bud, in turn, sensed whom the looming figure was.
"Sure!" Bud joyously answered. "And Nort and Dick are here! Say, what's the matter with our water? Is there a stoppage at the dam?"
"Nary a stop, but your dad got a telephone from your side-partners at the valley camp, saying you'd started through the tunnel to see what caused the shut-off. I happened to be over near Square M, seeing if I could get on the track of that cattle epidemic, and they relayed your dad's message on to me. So I hit the trail for here."
"What was dad's message?" Bud wanted to know.
"Why, he said you, and them tenderfeet—— No, I'll takethatback!" Slim hastened to say as he recalled all that Nort and Dick had done. "Anyhow, he said they shouldn't have allowed you to come in the tunnel alone, and he asked some of the men, from this end, to go in and see if they could locate you."
"You found us," said Bud.
"Well," resumed Slim, "I just got here, heard the news and I started in. Some of the others are coming, but I guess we don't need to make any search. You're here!"
"And more by good luck than good management," asserted Dick.
"How's that?" asked Slim, as they all started for the opening at the river end of the tunnel, where daylight dimly showed.
"Why, when we started in at the other side the stream was dry," explained Bud. "There wasn't a drop coming through the pipe into the reservoir, and we left, early this morning, to see what the trouble was. When we got half way through the stream suddenly began flowing, and there was a regular flood. Only that we found a ledge to climb up on, we'd been drowned!"
"As bad as that!" gasped Slim.
"Every bit!" Dick asserted.
"But tell me," went on Bud, "did the water stop at the river end, Slim? Was there any stoppage at the dam or pipe?"
"Nary a stop, Bud," Slim answered. "They told me, when I started in, that the water had been flowing all night, as usual, and they didn't see why you claimed there was none at your end."
"By Zip Foster! But there's something mighty strange here!" cried the boy rancher.
"You intimated good and plenty that time!" declared Slim as he and the boys reached the river end of the tunnel, where the intake pipe took the water from the Pocut stream, delivering it to the tunnel.
"But here's a queer part of it," went on Dick, as they joined the other cowboys who were preparing to follow Slim in, and search for the Diamond X lads. "No such body of water, as so nearly overwhelmed us, ever came through this pipe," and he pointed to the one that tapped the dammed-up water of the river.
"That's right!" agreed Bud. "This thing gets worse and worse! We'll never get to the bottom of this mystery!"
"You're right!" declared one of the cowboys. "When you're dealing with them underground water-courses you never know what you're up against. The old Indians and Spaniards who lived here hundreds of years ago had their own troubles, and maybe they wished them same troubles on to you."
"What you mean?" asked Slim. "That's all bosh!"
"Bosh nothin'!" declared another. "You read history an' you'll get lots of cases where streams showed up, and then vanished under mountains, more than once."
"A heap sight you know abouthist'ry!" laughed Slim in good-natured raillery.
"Well, this is sure queer, anyhow!" declared Bud. "Is there any history of the stream that waters our valley?" he asked the cowboy who had made the assertion.
"Not your particular one," was the answer, "but there's lots of just such cases mentioned—hidden water-courses and all that."
"Well, there's something wrong," agreed Bud, "and I believe there must be some place along the tunnel where our water shunts itself off at times, and turns itself on again. We were looking for just such a place."
"And you didn't find it?" asked Slim.
"Nary a find!" asserted Bud.
"But we aren't going to give up, just on that account!" said Nort.
"Bet you not!" added his brother. "We'll try it again, and take a canoe with us, so if the dry water-course suddenly turns wet, we can paddle along it."
"Well, it seems to be all right now," spoke Slim. "And you'd better 'phone your father that you're all right, Bud. He'll be anxious to hear."
And after Mr. Merkel had been assured, over the wire, of the safe transit of his son and nephews through the tunnel, the boys' camp was called up, to let Old Billee and the others know that no accident had happened.
"Gosh! I'm glad to hear that!" said the veteran cowboy over the wire. "When we see that there water come gushin' out, we thought sure you was goners, Bud!"
"Then the water is running again?" Bud asked.
"Absolutely!" declared Billee. "You comin' back here?"
"Sure! Butoverthe mountain—notunderit."
Bud and his boy rancher chums remained that night at the store settlement near the dam, getting beds in what passed for a hotel. It was too late to secure horses and ride over Snake Mountain trail back to Flume Valley.
While thus having a night of leisure, and seeing such sights as were to be viewed in the little town, Bud and his chums discussed the queer situation of the mysteriously disappearing and reappearing water. But, talk as they did, and venture opinions as they and their cowboy friends did, no one could hit on a solution.
"We'll just have to make another and more careful inspection," declared Nort.
"That's what!" agreed Bud.
They learned from Slim that the situation regarding the cattle epidemic at Square M ranch was not much better. All stock which had not been exposed to the infection had been removed, either to Diamond X, Triangle B or Flume Valley, and the infected steers remaining there were being treated by a veterinarian whom Mr. Merkel had engaged.
"But they're slowly dying off," Slim reported. "And I don't believe Square M ranch will ever be safe to use again."
"Why not?" asked Bud.
"Because there must be some infection in the grass there to have made so many of the cattle sicken and die."
"Maybe it was something else," suggested Nort.
"Well, maybe," assented the foreman. "It's about as mysterious as that underground river of yours. Had any more warnings, Bud?"
"No, I guess they're done with. And I believe it's a natural cause, and not due to any work of enemies, that accounts for the queer way our flume acts."
"Um!" spoke Slim musingly, and that was all he would say.
Borrowing horses from their friends, the boy ranchers next day made the trip over Snake Mountain and returned to camp, finding matters there in good shape. There was an abundance of water in the reservoir, and the pipe was flowing freely.
For more than a week nothing happened. The cattle at Flume Valley, including those of the boy ranchers, and the herd transferred from Square M to save it from the epidemic, were doing well, abundant grass and water being their portions.
There was no lack of hard work for the boys and their cowboy assistants, for it was not all easy sailing. Occasionally bunches of steers would stray, and have to be driven back by hard riding. There were night watches to be carried on, and another bunch of cattle was shipped away.
Bud, Dick and Nort hazed them over to the railroad, and on the trip a small-sized stampede gave them all they wanted to handle. But they were true sons of the west, and did not complain.
"Whew! That was hot, while it lasted!" exclaimed Bud, as he and cousins managed to get the stampeding animals quieted, after they had tried so hard to run off by themselves, in varying directions.
"Yes, a thing like that gives you an appetite," remarked Dick.
"As ifyouever needed any stimulant!" laughed Nort. "I never saw the time yet when you had to be offered an inducement to sit up to grub!"
"You either!" retorted the stout lad. "But, speaking of grub, when do we eat, Bud?"
"Might as well make it right soon," was the answer. "Now that we have the steers quieted they'll be glad enough to take it easy. I planned to water 'em at the next stopping place, and that will give us a chance to see what Buck Tooth put up for us."
"Stay there all night; will we?" asked Nort.
"Might as well," assented his cousin. "No use running all the fat off our stock. We want 'em to weigh as heavy as possible."
This was good business tact on the part of the boy ranchers. For cattle are generally sold by weight, either "on the hoof," which means alive and as they stand in the stock yards, or by weight after being slaughtered. In the case of ranchers "on the hoof" is generally understood.
And driving a bunch of steers at too great a speed from the ranch to the railroad would make them thin, "running off their fat," so to speak, thus losing all the advantages of the rich fodder to which they had had access. And when it is considered that it is not at all difficult to cause a steer to lose from ten to fifteen pounds by means of poor driving, and when to this statement is added the fact that this loss is multiplied in hundreds of steers, Bud's state of mind can easily be imagined.
"Yes, we'll get 'em quieted down, and take it easy ourselves," suggested the Western lad. And, a little later when some of the steers broke into a run, Nort exclaimed:
"Are they stampeding again?"
"No. I reckon they just smell water," Bud answered.
This proved to be true, and this contagion spread all through the herd, though with no ill effects, for the water hole was not far off and, reaching it, the animals stopped to drink.
There was some confusion and excitement because so many thirsty cattle all wanted to drink at once, but it did not last long, and Bud, Nort and Dick were glad when they could slip from their saddles, tossing the reins over their ponies' heads as an intimation to the animals not to stray.
"Oh boy! But I'm tired!" exclaimed Nort, sighing.
"Add hungry to that and I'm with you," said his brother. For there had been days of long and difficult work in preparing this bunch of cattle for shipment.
"Getting tired of the game?" asked Bud, as he rustled up some sticks of greasewood to make a fire over which they might boil coffee and fry bacon.
"Not on your life!" laughed Nort. "We're in the game to stick!"
"Sure thing!" asserted Dick.
They made a simple but ample meal over the camp fire and then, as evening settled down over the vast prairies, and quiet enfolded them like some soft mantle, they lay on their blankets and gazed at the feeding cattle.
The steers were very quiet now, evidently feeling quite satisfied with the manner in which they had been treated, and having, of course, no intimation of the fate in store for them. They had food and water and that is all they required. Overhead was the cloudless sky, in which sparkling stars were beginning to stud themselves.
"I hope the market is well up in price when we get to the yards," observed Bud, idly chewing on a spear of grass.
"Yes, it would be dandy to get a big price for this stock," agreed Nort.
The boy ranchers were rapidly becoming interested in the business end of their venture, as they had been, for some time, in the more picturesque side. The difference of a fraction of a cent in the price of cattle on the hoof meant the difference of several hundred of dollars where there were many tons of meat to be considered.
"Well, we'd better ride herd a little while, to make sure they get bedded down quietly," suggested Bud, as it began to get darker. "Then we'll roll up and snooze ourselves."
This "bedding down" of the cattle, meaning thereby inducing them to get quiet enough so they would lie down contentedly chewing their cuds, was part of the routine of a cowboy's life.
"Some of 'em have already started in," observed Nort, as he went up to his pony, which, with the other two animals, had been contentedly grazing. "Looks like they'd lived here all their lives."
He indicated a score or more of the steer's that were stretched out on the rich grass which at once formed their food and their bed.
"Yes, I reckon we'll have a quiet night," observed Bud.
The three chums slowly rode around the bunch of cattle, the lads occasionally breaking into the chorus of some song.
The cattle seemed to like this singing—not that this is to be considered a compliment to the voices of Nort, Dick and Bud, though their tones were far from unmusical. But the fact is that animals of most sorts are fond of music in any form, and nothing so seems to soothe and quiet a bunch of cattle, especially at night, as the singing of the herders.
Perhaps it is due to this fact that we have so many cowboy songs with an interminable number of verses, in which there is little sense or sequence—a mere jumble of words, often repeated. The cattle seem to care more for the tune than for the sentiment.
At any rate the bunch from Flume Valley grew more quiet as the night became darker, and when the remains of their camp fire gleamed dully in the blackness, as they made their way back to it, Bud and his cousins considered their work done for the day.
"We won't stand any regular watch," Bud said. "I think they'll be all right. But if we should hear a disturbance—I mean any one of us—he can awaken the others, and we'll do whatever we have to."
"And if we have any luck we won't have to roll out," observed Nort, as he spread out his blankets and tarpaulin, which last was to keep the dampness of the ground away.
"Then I'm going to cross my fingers for luck," observed Dick.
Save for the occasional distant howl of a coyote, or the uneasy movement of an occasional steer, with, now and then, the clashing of the horns of some of the beasts, there was silence in the camp. Bud was the first to fall asleep, because he was more accustomed to this sort of life than were his cousins. But they were rapidly falling in with the ways of the west, which teaches a wayfarer to consider home wherever he hangs up his hat, and his bed any place he can throw his blanket and saddle.
But finally Nort and Dick dropped off into slumber, which became sounder as the hours of night passed. All three of the boy ranchers were tired and they were in the most healthful state imaginable, brought about by their life in the open.
"What hour it was Dick had no idea, but he was suddenly awakened by sensing some movement near him—too near for comfort considering his exposed sleeping position. For he felt something cold and clammy at the back of his neck, as though a chunk of ice, or a hand dipped in cold water, had touched him.
"Hi! Who's doing that?" yelled Dick, for he had a sudden dream that he was back at school, and some one was playing a trick on him. "Cut it out!"
No sooner had he spoken than he realized that he had awakened Nort and Bud, for by the flickering light of the embers of the fire he could see them sitting up and staring over at him.
"What's the matter?" demanded Bud.
"Something tickled the back of my neck," declared Dick. "I guess a coyote must have been picking up scraps of food, and smelled of me. Hope he didn't take me for a dead one!"
"Coyote!" exclaimed Bud. "I don't believe you could get one to come near you, not as long as you breathed. It must have been a——"
"Snake!" broke in Nort, without thinking of what the word might mean.
"Wow! Don't say that!" cried Dick, and he leaped up, scattering his blanket and tarpaulin each in a different direction.
"Shut up!" commanded Bud, laughing. "Do you want to start the cattle off again? If it was a snake it won't hurt you, and it was probably more scared than you, Dick."
"Yes—maybe!" said the other. He lighted a stick of greasewood at the fire, and looked about his part of the sleeping ground. But he found nothing in the animal line.
"Guess you dreamed it!" said Nort.
"I certainly did not!" emphatically declared his brother.
"Well, go to sleep again," advised Bud. "If you feel it a second time call me!"
"Huh! I'll do that all right!" declared Dick. He carefully shifted his sleeping place, making a searching examination of the ground before spreading out his tarpaulin. And he was some little time in dropping off to slumber again.
But there was no further disturbance in the night, and in the morning Bud looked for marks on the ground, declaring the visitor had been a prairie dog, which Dick declared his unbelief in, sticking to the snake theory as being more sensational.
After breakfast they started to drive the cattle again, reaching the railroad yards and successfully transacting the business of selling their stock.
It was the night that Bud and his cousins returned from having driven the steers to the railroad yard that something happened which again brought to the front all their worries and anxieties.
They were all seated about the camp fire, and Pocut Pete had just arisen, remarking that he would get ready for his turn at night-riding, when there was a sort of hissing in the air over the heads of those gathered about the blaze, and something hit the ground in the midst of the circle.
"What's that?" exclaimed Nort
"An arrow!" answered Bud, and so it proved. An Indian arrow—of the sort used by the Redmen years ago, and hard to pick up now, even as relics—quivered in the ground near the blaze. And by the flickering flames it was seen that a paper was rolled about it.
In an instant Bud had leaped to his feet, plucked the arrow from the ground, and torn off the paper. By the light of the fire he read it.
"Another warning!" cried Bud.
"What does it say?" demanded Dick.
Bud read: