"Them are a breed of Mexies called Sonorans," answered Ham; "an' they are a-throwin' that dirt up in th' air an' a-catchin' it ag'in tew git th' gold out of it. You see th' wind keeps a-blowin' th' lighter dirt out an' a-leavin' th' gold, 'cause it's heavier, until thar's nuthin' left but th' dirt what's tew heavy for th' wind tew blow away an' th' gold-dust, which is cleaned by blowing th' heavy dirt out of th' bowl with th' breath. That way of gittin' gold is called dry-washin'; an' is tew slow an' dirty for Americans or anybody else that's got much gump tew 'em; but them tarnal Mexies seem tew thrive on it. I reckon th' good Lord made 'em nearly black, jest so they could live an' work in dirt, without th' dirt showin' through much. That sort of thing would kill a white man in a week," and Ham looked his disgust.
"Say, but this gold-digging is no fun, no matter how you do it, is it?" and Thure's eyes swept up and down the ravine, where hundreds of men were toiling like ditch-diggers.
"Fun! Gold-diggin' fun!" and Ham grinned. "Th' feller what comes tew th' diggin's a-thinkin' that th' gold is a-goin' tew jump up right out of th' ground, 'cause it's so glad tew see him, is a-goin' tew git fooled 'bout as bad as Dutch Ike did, when he took a skunk for a new kind of an American house cat an' tried tew pick it up in his arms. Fun! No; gold-diggin' is jest grit an' j'int grease mixed tewgether an' kept a-goin' with beans an' salt pork an' flapjacks. But, we're gettin' ahind a-watchin' them dirty Sonorans. Come on," and the huge strides of Ham made Thure and Bud both trot to keep up with him, as he hurried after the others, to whom the dry-washing Mexicans were too common a sight to be worthy a moment's pause for the purpose of watching.
"Now, dad," and Thure turned inquiringly to his father, when, at length, all stood together in Holt's Gulch on the mound of dirt that had been already thrown up in building the wing dam, "I don't just see how this dam is going to help you find the gold."
"Well, my son," and Mr. Conroyal smiled, "it is not at all surprising to find that you do not know all about mining, seeing that you have been in the diggings only over night; but I'll give you the theory of the dam. This little stream of water, as you can see from where we stand, makes rather a sharp turn a few rods down, against an almost perpendicular wall of rock, forming a curve in the stream that can be likened to the crook in a bent arm, and leaving quite a little open space of ground almost on a level with the water in the bend of the arm. Now we've discovered that there is a deep hole right at the elbow joint, partly filled with gravel and big enough to hold a good many tons of gold, but too deep to get at through the water; and we've figured it out something like this. The gold found in all the diggings along the beds of rivers has been washed out of the rocks by the water and carried down by the current, until stopped by its own weight or some obstruction; and we calculate that most of the gold carried down by this stream would sink down into this hole and stay there, because, gold being so heavy, it would sure fall down into the hole, and, once there, the water would not be strong enough to lift it out again. Now, that is the reason why we think there might be gold and lots of it in that there hole," and he pointed to the elbow made by the curve in the stream.
"But, of course, not being fish, we cannot get down into the hole to see whether or not there is gold in it, as long as the water runs over it; and so we are making this wing dam up here above the elbow, to turn the stream into a new channel and send it flowing kitti-corner-wise across the opening between the two arms of the elbow and back into its own channel below the elbow, which, of course, would leave the elbow dry and give us a chance to clean out the hole and get all the gold there is in it."
"Oh, I see now!" exclaimed Thure, his eyes beginning to shine with excitement. "And you call it a wing dam, because you have to make a sort of a wing to the main dam, extending for quite a ways out on the dry land, in order to give the water a sufficient turn to keep it from flowing back into the old channel until you are ready to have it."
"Exactly," and Mr. Conroyal smiled. "And, if the good Lord will only keep it from raining until we get the dam finished, all of us might make our fortunes right here; and, again, we might not find a cent's worth of gold. It's all a speculation," and he shrugged his big shoulders.
"But—but what difference could a little rain make? You are not afraid of getting wet, are you?" and Thure smiled at the thought of these hardy men standing in dread of a little rain.
"No, son, we are not afraid of getting wet," and Mr. Conroyal smiled grimly. "But a big rain up there in the mountains where this stream comes from, would mean that in less than no time a flood of water would come a-tearing down this narrow gulch that would sweep our dam off its feet quicker than you could wink an eye—and us along with it, if we didn't get out of here about as lively as the Lord would let us. Howsomever we are not counting much on a rain, seeing that the dry season has got a fairly good start; but it might come," and his eyes turned a little anxiously toward the snow-covered mountains to the northeast, whence came the little stream of water running through Holt's Gulch. "But, come, we must get busy. Now, the first thing for us to do is to figure out about how much longer it will take us to finish the dam. I calculate that we have the dam about two-thirds done; and, since we have now been at work twelve days, I think we can count on finishing it in another six days."