After half a year’s luxurious vagrancy in the islands, I took shipping in a sailing vessel, and regretfully returned to San Francisco—a voyage in every way delightful, but without an incident: unless lying two long weeks in a dead calm, eighteen hundred miles from the nearest land, may rank as an incident. Schools of whales grew so tame that day after day they played about the ship among the porpoises and the sharks without the least apparent fear of us, and we pelted them with empty bottles for lack of better sport. Twenty-four hours afterward these bottles would be still lying on the glassy water under our noses, showing that the ship had not moved out of her place in all that time. The calm was absolutely breathless, and the surface of the sea absolutely without a wrinkle. For a whole day and part of a night we lay so close to another ship that had drifted to our vicinity, that we carried on conversations with her passengers, introduced each other by name, and became pretty intimately acquainted with people we had never heard of before, and have never heard of since. This was the only vessel we saw during the whole lonely voyage.  
We had fifteen passengers, and to show how hard pressed they were at last for occupation and amusement, I will mention that the gentlemen gave a good part of their time every day, during the calm, to trying to sit on an empty champagne bottle (lying on its side), and thread a needle without touching their heels to the deck, or falling over; and the ladies sat in the shade of the mainsail, and watched the enterprise with absorbing interest. We were at sea five Sundays; and yet, but for the almanac, we never would have known but that all the other days were Sundays too.
I was home again, in San Francisco, without means and without employment. I tortured my brain for a saving scheme of some kind, and at last a public lecture occurred to me! I sat down and wrote one, in a fever of hopeful anticipation. I showed it to several friends, but they all shook their heads. They said nobody would come to hear me, and I would make a humiliating failure of it.
They said that as I had never spoken in public, I would break down in the delivery, anyhow. I was disconsolate now. But at last an editor slapped me on the back and told me to “go ahead.” He said, “Take the largest house in town, and charge a dollar a ticket.” The audacity of the proposition was charming; it seemed fraught with practical worldly wisdom, however. The proprietor of the several theatres endorsed the advice, and said I might have his handsome new opera-house at half price—fifty dollars. In sheer desperation I took it—on credit, for sufficient reasons. In three days I did a hundred and fifty dollars’ worth of printing and advertising, and was the most distressed and frightened creature on the Pacific coast. I could not sleep—who could, under such circumstances? For other people there was facetiousness in the last line of my posters, but to me it was plaintive with a pang when I wrote it:
“Doors open at 7 1/2. The trouble will begin at 8.”
That line has done good service since. Showmen have borrowed it frequently. I have even seen it appended to a newspaper advertisement reminding school pupils in vacation what time next term would begin. As those three days of suspense dragged by, I grew more and more unhappy. I had sold two hundred tickets among my personal friends, but I feared they might not come. My lecture, which had seemed “humorous” to me, at first, grew steadily more and more dreary, till not a vestige of fun seemed left, and I grieved that I could not bring a coffin on the stage and turn the thing into a funeral. I was so panic-stricken, at last, that I went to three old friends, giants in stature, cordial by nature, and stormy-voiced, and said:
“This thing is going to be a failure; the jokes in it are so dim that nobody will ever see them; I would like to have you sit in the parquette, and help me through.”
They said they would. Then I went to the wife of a popular citizen, and said that if she was willing to do me a very great kindness, I would be glad if she and her husband would sit prominently in the left-hand stage- box, where the whole house could see them. I explained that I should need help, and would turn toward her and smile, as a signal, when I had been delivered of an obscure joke—“a............