"I don"t think there can be any doubt about that," Joe replied; "but I think your plan is a good one, all the same, so let us do it."
We did not waste much time in getting down to the ranch and back again, when, pulling on our rubber boots, we proceeded to make our survey. It was not an easy task.
With the ring at the end of the tape-measure hooked over my little finger, I took a candle in that hand and the compa.s.s in the other, and having ascertained that the course of the stream was due southeast, I told Joe to go ahead. My partner, therefore, with his arm slipped through the handle of the lantern and with a pole in his hand with which to test the depth of the stream, thereupon started down the pa.s.sage, stepping from rock to rock when possible, and taking to the water when the rocks were too far apart, until, having reached the limit of the tape-measure, he made a mark upon the wall with a piece of white chalk.
This being done, I noted on a bit of paper the direction and the distance, when Joe advanced once more, I following as far as to the chalk-mark, when the operation was repeated.
In this manner we worked our way, slowly and carefully, down the pa.s.sage, the direction of which varied only two or three degrees to one side or the other of southeast, until, having advanced a little more than a thousand feet, we found our further progress barred.
For some time it had appeared to us that the sound of splashing water was increasing in distinctness, though the stream itself made so much noise in that hollow pa.s.sage that we could not be sure whether we were right or not. At length, however, having made his twentieth chalk-mark, indicating one thousand feet, Joe, waving his lantern for me to come on, advanced once more; but before I had come to his last mark, he stopped and shouted back to me that he could go no farther.
Wondering why not, I slowly waded forward, Joe himself winding up the tape-measure as I approached, until I found myself standing beside my companion, when I saw at once "why not."
The stream here took a sudden dive down hill, falling about three feet into a large pool, the limits of which we could not discern--for we could see neither sides nor end--its surface unbroken, except in a few places where we could detect the ragged points of big lava-blocks projecting above the water, while here and there a rounded boulder showed its smooth and shining head.
Joe, very carefully descending to the edge of the pool, measured the depth with his rod, when, finding it to be about four feet deep, we concluded that we would let well enough alone and end our survey at this point.
"Come on up, Joe," I called out. "No use trying to go any farther: it"s too dangerous; we might get in over our heads."
"Just a minute," Joe replied. "Let"s see if we can"t find out which way the current sets in the pool."
With that he took from his pocket a newspaper he had brought with him in case for any purpose we should need to make a "flare," and crumpling this into a loose ball he set it afloat in the pool. Away it sailed, quickly at first, and then more slowly; and taking a sight on it as far as it was distinguishable, I found that the set of the current continued as before--due southeast.
"All right, Joe," I cried. "Come on, now." And Joe, giving me the end of his stick to take hold of, quickly rejoined me, when together we made our way carefully up the stream again, and climbing the rope, once more found ourselves out in the daylight.
"Now, Joe," said I, "let us run our line and find out where it takes us."
Having previously measured the distance from the point where the underground stream turned southeast to where the rope hung down, we now measured the same distance back again along the foot of the bluff, and thence, ourselves turning southeastward, we measured off a thousand feet. This brought us down to the lowest of the old lake-benches, about a hundred yards back of the house, when, sighting along the same line with the compa.s.s, we found that that faithful little servant pointed us straight to the entrance of the lower canon.
"Then that does settle it!" cried Joe. "We"ve found the stream that keeps "the forty rods" wet; there can be no doubt of it."
It did, indeed seem certain that we had at last discovered the stream which supplied "the forty rods" with water; but allowing that we _had_ discovered it:--what then? How much better off were we?
Beneath our feet, as we had now every reason to believe, ran the long-sought water-course, but between us and it was a solid bed of lava about forty feet thick; and how to get the water to the surface, and thus prevent it from continuing to render useless the meadow below, was a problem beyond our powers.
"It beats me," said Joe, taking off his hat and tousling his hair according to custom. "I can see no possible way of doing it. We shall have to leave it to your father. Perhaps he may be able to think of a plan. Do you suppose he"ll venture to go down the rope, Phil?"
"No, I don"t," I replied. "It is all very well for you and me, with our one hundred and seventy pounds, or thereabouts, but as my father weighs forty pounds more than either of us, and has not been in the habit of climbing ropes for amus.e.m.e.nt as long as I can remember, I think the chances are that he won"t try it."
"I suppose not. It"s a pity, though, for I"m sure he would be tremendously interested to see the stream down there in the crevice.
Couldn"t we----Look here, Phil: couldn"t we set up a ladder to reach from the bottom up to the bulge?"
I shook my head.
"I don"t think so," I answered. "It would take a ladder twenty feet long, and the bulge in the wall would prevent its going down."
"That"s true. Well, then, I"ll tell you what we can do. We"ll make two ladders of ten feet each--a ten-foot pole will go down easily enough--set one on the floor of the crevice and the other on that wide ledge about half way up to the bulge. What do you think of that?"
"Yes, I think we could do that," I replied. "We"ll try it anyhow. But we must go in and get some dinner now: it"s close to noon."
We did not take long over our dinner--we were too anxious to get to work again--and as soon as we had finished we selected from our supply of fire-wood four straight poles, each about ten feet long, and with these, a number of short pieces of six-inch plank, a hammer, a saw and a bag of nails, we drove back to the scene of action.
Even a ten-foot pole, we found, was an awkward thing to get down to the bottom of the fissure, but after a good deal of coaxing we succeeded in lowering them all, when we at once set to work building our ladders.
The first one, standing on the floor of the crevice, reached as high as the ledge Joe had mentioned, while the second, planted upon the ledge itself, leaned across the chasm, its upper end resting against the rock just below the bulge, so that, with the rope to hold on by, it ought to be easy enough to get up and down. It is true that the second ladder being almost perpendicular, looked a little precarious, but we had taken great care to set it up solidly and were certain it could not slip. As to the strength of the ladders, there was nothing to fear on that score, for the smallest of the poles was five inches in diameter at the little end.
This work took us so long, for we were very careful to make things strong and firm, that it was within half an hour of sunset ere we had finished, and as it was then too late to begin hauling rocks, we drove down to the ranch again at once.
As we came within sight of the house, we had the pleasure of seeing the buggy with my father and mother in it draw up at the door. Observing us coming, they waited for us, when, the moment we jumped out of the wagon, before we could say a word ourselves, my father exclaimed:
"Hallo, boys! What are you wearing your rubber boots for?"
My mother, however, looking at our faces instead of at our feet, with that quickness of vision most mothers of boys seem to possess, saw at once that something unusual had occurred.
"What"s happened, Phil?" she asked.
"We"ve made a discovery," I replied, "and we want father to come and see it."
"Can"t I come, too?" she inquired, smiling at my eagerness.
"I"m afraid not," I answered. "I wish you could, but I"m afraid your petticoats would get in the way."
To this, perceiving easily enough that we had some surprise in store for my father, and not wishing to spoil the fun, my mother merely replied:
"Oh, would they? Well, I"m afraid I couldn"t come anyhow: I must go in and prepare supper. So, be off with you at once, and don"t be late. You can tell me all about it this evening."
"One minute, father!" I cried; and thereupon I ran to the house, reappearing in a few seconds with his rubber boots, which I thrust into the back of the buggy, and then, climbing in on one side while Joe scrambled in on the other, I called out:
"Now, father, go ahead!"
"Where to?" he asked, laughing.
"Oh, I forgot," said I. "Up to our stone-quarry."
If we had expected my father to be surprised, we were not disappointed.
At first he rather demurred at going down our carefully prepared ladders, not seeing sufficient reason, as he declared, to risk his neck; but the moment we called his attention to the sound of water down below, and he began to understand what the presence of the rubber boots meant, he became as eager as either Joe or I had been.
In short, he went with us over the whole ground, even down to the pool; and so interested was he in the matter that he quite forgot the flight of time, until, having reascended the ladders and followed with us our line on the surface down to the heap of stones with which we had marked the thousand-foot point, he--and we, too--were recalled to our duties by my mother, who, seeing us standing there talking, came to the back-door of the kitchen and called to us to come in at once if we wanted any supper.
Long was the discussion that ensued that evening as we sat around the fire in the big stone fireplace; but long as it was, it ended as it had begun with a remark made by my father.
"Well," said he, as he leaned back in his chair and crossed his slippered feet before the fire, "it appears to come to this: instead of discovering a way to drain "the forty rods," you have only provided us with another insoluble problem to puzzle our heads over. There seems to be no way that we can figure out--at present, anyhow--by which the water can be brought to the surface, and consequently our only resource is, apparently, to discover, if possible, where it first runs in under the lava-bed, to come squirting out again down in that fissure--an almost hopeless task, I fear."
"It does look pretty hopeless," Joe a.s.sented; "though we have found out one thing, at least, which may be of service in our search, and that is that the water runs between the lava and the sandstone. That fact should be of some help to us, for it removes from the list of streams to be examined all those whose beds lie below the sandstone."
"That"s true enough," I agreed. "But, then again, the source may not be some mountain stream running off under the lava, as we have been supposing. It is quite possible that it is a spring which comes up through the sandstone, and not being able to get up to daylight because of the lava-cap, goes worming its way through innumerable crevices to the underground reservoir we suppose to exist somewhere beneath the surface of the Second Mesa."
"That is certainly a possibility," replied my father. "Nevertheless, it is my opinion that it will be well worth while making an examination of the creeks on Mount Lincoln. The streams to search would be those running on a sandstone bed and coming against the upper face of the lava-flow. It is worth the attempt, at least, and when the snow clears off you boys shall employ any off-days you may have in that way."