“The thing is self-evident,” I continue. “184° west longitude means a lapping over in east longitude of four degrees. Besides I have been in east longitude all the time. I sailed from Fiji, and Fiji is in east longitude. Now I shall chart my position and prove it by dead reckoning.” Every Thursday, friends of Madame Aubain dropped in for a game of cards, and it was Felicite’s duty to prepare the table and heat the foot-warmers. They arrived at exactly eight o’clock and departed before eleven.!

It was three against one, and my hold on an aching tooth was certainly a foul one; but in spite of the handicap he got away with us. The forceps slipped off, banging and grinding along against his upper teeth with a nerve-scraping sound. Out of his month flew the forceps, and he rose up in the air with a blood-curdling yell. The three of us fell back. We expected to be massacred. But that howling savage of sanguinary reputation sank back in the chair. He held his head in both his hands, and groaned and groaned and groaned. Nor would he listen to reason. I was a quack. My painless tooth-extraction was a delusion and a snare and a low advertising dodge. I was so anxious to get that tooth that I was almost ready to bribe him. But that went against my professional pride and I let him depart with the tooth still intact, the only case on record up to date of failure on my part when once I had got a grip. Since then I have never let a tooth go by me. Only the other day I volunteered to beat up three days to windward to pull a woman missionary’s tooth. I expect, before the voyage of the Snark is finished, to be doing bridge work and putting on gold crowns. The Snark sailed from Fiji on Saturday, June 6, and the next day, Sunday, on the wide ocean, out of sight of land, I proceeded to endeavour to find out my position by a chronometer sight for longitude and by a meridian observation for latitude. The chronometer sight was taken in the morning when the sun was some 21° above the horizon. I looked in the Nautical Almanac and found that on that very day, June 7, the sun was behind time 1 minute and 26 seconds, and that it was catching up at a rate of 14.67 seconds per hour. The chronometer said that at the precise moment of taking the sun’s altitude it was twenty-five minutes after eight o’clock at Greenwich. From this date it would seem a schoolboy’s task to correct the Equation of Time. Unfortunately, I was not a schoolboy. Obviously, at the middle of the day, at Greenwich, the sun was 1 minute and 26 seconds behind time. Equally obviously, if it were eleven o’clock in the morning, the sun would be 1 minute and 26 seconds behind time plus 14.67 seconds. If it were ten o’clock in the morning, twice 14.67 seconds would have to be added. And if it were 8: 25 in the morning, then 3½ times 14.67 seconds would have to be added. Quite clearly, then, if, instead of being 8:25 A.M., it were 8:25 P.M., then 8½ times 14.67 seconds would have to be, not added, but subtracted; for, if, at noon, the sun were 1 minute and 26 seconds behind time, and if it were catching up with where it ought to be at the rate of 14.67 seconds per hour, then at 8.25 P.M. it would be much nearer where it ought to be than it had been at noon.

So the trip was decided upon, and the building of the Snark began. We named her the Snark because we could not think of any other name—this information is given for the benefit of those who otherwise might think there is something occult in the name. When we increased the length of the Snark in order to get space for a bath-room, we found that all the space was not required by the bath-room. Because of this, we increased the size of the engine. Seventy horse-power our engine is, and since we expect it to drive us along at a nine-knot clip, we do not know the name of a river with a current swift enough to defy us. “Don’t let him get away,” I cautioned to Martin. “I want that tooth.”