A GOLD MINE. 73
into it ; in that case they would be arranged in layers according to their specific gravity or weight, but they are not. Then, again, the most delicate crystals and threads of gold are mingled and interlaced in such ways that a melted mass forced up into the rents would not permit to form. The explanation is that the quartz was introduced into all veins either from below through the agencies of hot water and steam, in which it and all its metals were dissolved, or it oozed from the walls out of the surrounding rocks, through which there is always a circulation of water. There are abundant reasons for this ex-planation, but here there is no space for stating them. At the Steamboat Hot Springs of Nevada this making a quartz vein with metallic contents is going on to-day, and open to all observers, and it is accomplished as I have indicated.
Now for a little further notice about gold. It is mined with drills, picks and shovels, and dynamite in the hands of strong, hardy men. They do not "dig" gold only in gravel deposits. With us the quartz is blasted out, and hauled to a stamping-mill or crusher, where it is pounded into sand by stamps weighing about nine hundred pounds each. The gold is thus cleared from the quartz, melted into bars, and sold in New York to the United States Government.