"I am a native of _____, in the United States of America... My father died shortly after I was twenty-one; and being left well off, and having a taste for travel and adventure, I resigned, for a time, all pursuit of the almighty dollar, and became a desultory wanderer over the face of the earth... In the year 18__, happening to be in _____, I was invited by a professional engineer, with whom I had made acquaintance, to visit the recesses of the ________ mine, upon which he was employed... (Chapter I)"