The richest deposits of gold were found in the beds and banks of the rivers, creeks, and ravines, in the flats on the convex side of the bends of the streams, and in many of the flats and hollows high up in the mountains. The precious metal was also abstracted from the very hearts of the mountains, through tunnels drifted into them for several hundred yards; and in some places real mining was carried on in the bowels of the earth by means of shafts sunk to the depth of a couple of hundred feet. The principal diggings in the neighborhood of Hangtown were surface diggings; but, with the exception of river diggings, every kind of mining operation was to be seen in full force. The gold is found at various depths from the surface; but the dirt on the bed-rock is the richest, as the gold naturally in time sinks through earth and gravel, till it is arrested in its downward progress by the solid rock. The diggings here were from four to six or seven feet deep; the layer of “pay-dirt” being about a couple of feet thick on the top of the bed-rock. I should mention that “dirt” is the word universally used in California to signify the substance dug, earth, clay, gravel, loose slate, or whatever other name might be more appropriate. The miners talk of rich dirt and poor dirt, and of “stripping off” so many feet of “top dirt” before getting to “pay-dirt,” the latter meaning dirt with so much gold in it that it will pay to dig it up and wash it. The apparatus generally used for washing was a “long tom,” which was nothing more than a wooden trough from twelve to twenty-five feet long, and about a foot wide. At the lower end it widens considerably, and on the floor there is a sheet of iron pierced with holes half an inch in diameter, under which is placed a flat box a couple of inches deep. The long tom is set at a slight inclination over the place which is to be worked, and a stream of water is kept running through it by means of a hose, the mouth of which is inserted in a dam built for the purpose high enough up the stream to gain the requisite elevation; and while some of the party shovel the dirt into the tom as fast as they can dig it up, one man stands at the lower end stirring up the dirt as it is washed down, separating the stones and throwing them out, while the earth and small gravel falls with the water through the sieve into the “ripple-box.” This box is about five feet long, and is crossed by two partitions. It is also placed at an inclination, so that the water falling into it keeps the dirt loose, allowing the gold and heavy particles to settle to the bottom, while all the lighter stuff washes over the end of the box along with the water. When the day’s work is over, the dirt is taken from the “ripple-box” and is “washed out” in a “wash-pan,” a round tin dish, eighteen inches in diameter, with shelving sides three or four inches deep. In washing out a panful of dirt, it has