"What a pity," remarked Dick, "that there is no water here. If only one could get water upon it, this sage-brush plain could be turned into a wheat-field big enough to supply the whole State with bread, besides furnishing labor and subsistence for a good-sized population of farmers."

"It would be fine, wouldn't it?" I assented. "And I don't see why it has never been done: there must be many streams coming down from these mountains."

"Yes, no doubt; but the difficulty is that all the streams of any consequence have cut cañons for themselves and are too far below the general level to be of any use. To get water out upon the surface of this valley one would have to go high up on the mountain, find some good-sized stream, head it off—building a dam for the purpose, perhaps—and then conduct the water down here by a ditch several miles long possibly. Far too big an undertaking, you see, for these penniless, unenterprising Mexicans."

"I see. It would take a great deal of work and a great deal of money, probably, but it would be a fine thing to do, all the same."

"Yes, it would; and some day it will be done. It won't be so very many years before all the 'easy water' in the State will have been appropriated, and then people will begin to look out for a supply in the more out-of-the-way places, building reservoirs to catch the rainfall which now runs to waste after every thunder-storm, and carrying the water long distances to sell it to the ranchman. The professor says that some day the business of catching and distributing irrigation water will be the most important industry in the State, and that a good ever-flowing stream will be more valuable than any silver mine."

"I can understand that," I replied. "The best mine will some day come to an end, for when the silver is once dug out it is gone—you can't plant more; whereas, a good stream of water applied on the soil will go on producing forever and ever."

"That's it, exactly. And some day that is what will happen here. This fine stretch of level land, which now grows only grass enough to support about three cows and a burro, won't always lie idle. Some enterprising fellow will come along, climb up into this mountain, catch one of those streams which now go running off through the cañons, turn it down here, and a couple of years later this worthless desert will be converted into farms and orchards."

"A fine undertaking, too!" I exclaimed. "I should like to have a try at it myself."

"So should I. But our object in life just now is 'copper,' so come on, old chap, and let us ride down to the point of this ridge. What is that black speck down there toward the village? Man on horseback? Ah! He has disappeared again. Well, come on now, Frank. Let's get started."