He hopes to make this little volume useful to those who are, or who expect to be, engaged in the arduous employments of mining. If any shall be encouraged to perseverance--especially if any young men who shall be thus thrown into circumstances where immorality and vice are so prevalent, and to which many give themselves up too easy victims, shall be put upon their guard, his best wishes will have been accomplished. He recalls, with sadness, the case of a merchant of education and refinement, who left a large circle of friends and a young family. With bright hopes he started for the gold placers. Disheartened by several failures, depressed at his separation from his family, he sought in the social cup to forget his sorrows and disappointments. Within three months from the time he arrived in the country he became a subject of _mania a potu_, and died in the streets of San Francisco. The path of vice in California lies not through the ordinary influences of life; it leads not, as elsewhere, through a long course. It lies rather on an inclined plane, and speedily runs down into despair and ruin. I intend to make this volume a miner’s manual, in which he may find important directions relating to the various mining operations. Another motive with the writer is the desire to induce all who are doing _well enough_, who are living within their means and laying by a little, to remain satisfied at home. The question is often asked, _Who should go to the mines?_ It is very sure that a man with a family depending upon his daily efforts should not go. He should not exhaust his slender means, and run himself in debt, with the hope of making himself independent in one or two years. Let such a one, who is inclined to do this, picture to himself his wife struggling alone with poverty or sickness, his children left without a father’s presence and love to guide and protect, and himself a homeless wanderer, subjected to the privations, hardships, and sickness incident to such a vagrant life. Let the young man go, if he will, who has no family depending upon him--who has a strong constitution, and stronger moral courage; who is sober and persevering; who has little prospect of making a comfortable living at home, and who can make up his mind to spend five years from it, and to enjoy as few comforts as did Diogenes. To such a one there may be some comfort in even a miner’s life. He has not, like the man of family in a similar condition, to experience how much the heart can bear and not break--to live only in the future, while he “Drags at each remove a lengthening chain.” His is not the history of an _exile heart_. He may enjoy the rest of the laboring man beneath God’s own glorious canopy. The hardships which he endures in this, the _gold-age_ of his life, may make him more satisfied with his situation when he returns home, while the troubles which once annoyed him will not there be experienced.