When we sailed from San Francisco on the Snark I knew as much about sickness as the Admiral of the Swiss Navy knows about salt water. And here, at the start, let me advise any one who meditates going to out-of-the-way tropic places. Go to a first-class druggist—the sort that have specialists on their salary list who know everything. Talk the matter over with such an one. Note carefully all that he says. Have a list made of all that he recommends. Write out a cheque for the total cost, and tear it up. Then a thin small voice, which I do not recognize, coming from nowhere in particular in my consciousness, says:!

“The True Course is the angle made with the meridian by a straight line on the chart drawn to connect the ship’s position with the place bound to.” Virginia was growing weaker.

But in our particular case there was another perturbing factor. The sun, in its annual march north through the heavens, was increasing its declination. On the 19th parallel of north latitude in the middle of May the sun is nearly overhead. The angle of arc was between eighty-eight and eighty-nine degrees. Had it been ninety degrees it would have been straight overhead. It was on another day that we learned a few things about taking the altitude of the almost perpendicular sun. Roscoe started in drawing the sun down to the eastern horizon, and he stayed by that point of the compass despite the fact that the sun would pass the meridian to the south. I, on the other hand, started in to draw the sun down to south-east and strayed away to the south-west. You see, we were teaching ourselves. As a result, at twenty-five minutes past twelve by the ship’s time, I called twelve o’clock by the sun. Now this signified that we had changed our location on the face of the world by twenty-five minutes, which was equal to something like six degrees of longitude, or three hundred and fifty miles. This showed the Snark had travelled fifteen knots per hour for twenty-four consecutive hours—and we had never noticed it! It was absurd and grotesque. But Roscoe, still looking east, averred that it was not yet twelve o’clock. He was bent on giving us a twenty-knot clip. Then we began to train our sextants rather wildly all around the horizon, and wherever we looked, there was the sun, puzzlingly close to the sky-line, sometimes above it and sometimes below it. In one direction the sun was proclaiming morning, in another direction it was proclaiming afternoon. The sun was all right—we knew that; therefore we were all wrong. And the rest of the afternoon we spent in the cockpit reading up the matter in the books and finding out what was wrong. We missed the observation that day, but we didn’t the next. We had learned. In order to facilitate the children’s studies, he presented them with an engraved geography which represented various scenes of the world; cannibals with feather head-dresses, a gorilla kidnapping a young girl, Arabs in the desert, a whale being harpooned, etc. The baggage was sent the day before on Liebard’s cart. On the following morning, he brought around two horses, one of which had a woman’s saddle with a velveteen back to it, while on the crupper of the other was a rolled shawl that was to be used for a seat. Madame Aubain mounted the second horse, behind Liebard. Felicite took charge of the little girl, and Paul rode M. Lechaptois’ donkey, which had been lent for the occasion on the condition that they should be careful of it.