And now for another phase of the physics of surf-riding. All rules have their exceptions. It is true that the water in a wave does not travel forward. But there is what may be called the send of the sea. The water in the overtoppling crest does move forward, as you will speedily realize if you are slapped in the face by it, or if you are caught under it and are pounded by one mighty blow down under the surface panting and gasping for half a minute. The water in the top of a wave rests upon the water in the bottom of the wave. But when the bottom of the wave strikes the land, it stops, while the top goes on. It no longer has the bottom of the wave to hold it up. Where was solid water beneath it, is now air, and for the first time it feels the grip of gravity, and down it falls, at the same time being torn asunder from the lagging bottom of the wave and flung forward. And it is because of this that riding a surf-board is something more than a mere placid sliding down a hill. In truth, one is caught up and hurled shoreward as by some Titan’s hand. “No harbour this place,” he announced, shaking his head ominously.!

Twenty-seven days out from San Francisco we arrived at the island of Oahu, Territory of Hawaii. In the early morning we drifted around Diamond Head into full view of Honolulu; and then the ocean burst suddenly into life. Flying fish cleaved the air in glittering squadrons. In five minutes we saw more of them than during the whole voyage. Other fish, large ones, of various sorts, leaped into the air. There was life everywhere, on sea and shore. We could see the masts and funnels of the shipping in the harbour, the hotels and bathers along the beach at Waikiki, the smoke rising from the dwelling-houses high up on the volcanic slopes of the Punch Bowl and Tantalus. The custom-house tug was racing toward us and a big school of porpoises got under our bow and began cutting the most ridiculous capers. The port doctor’s launch came charging out at us, and a big sea turtle broke the surface with his back and took a look at us. Never was there such a burgeoning of life. Strange faces were on our decks, strange voices were speaking, and copies of that very morning’s newspaper, with cable reports from all the world, were thrust before our eyes. Incidentally, we read that the Snark and all hands had been lost at sea, and that she had been a very unseaworthy craft anyway. And while we read this information a wireless message was being received by the congressional party on the summit of Haleakala announcing the safe arrival of the Snark. “New arrivals are almost certain sooner or later to suffer from fever. The natives are also subject to it. The number of deaths among the whites in the year 1897 amounted to 9 among a population of 50.”

“Never mind their pesky road,” he said to me as we dragged ourselves up a shelf of rock and sat down, panting, to rest. “I’ll get an air machine soon and fool them. I’m clearing a level space for a landing stage for the airships, and next time you come to Tahiti you will alight right at my door.” 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. Out there in the midst of such a succession of big smoky ones, a third man was added to our party, one Freeth. Shaking the water from my eyes as I emerged from one wave and peered ahead to see what the next one looked like, I saw him tearing in on the back of it, standing upright on his board, carelessly poised, a young god bronzed with sunburn. We went through the wave on the back of which he rode. Ford called to him. He turned an airspring from his wave, rescued his board from its maw, paddled over to us and joined Ford in showing me things. One thing in particular I learned from Freeth, namely, how to encounter the occasional breaker of exceptional size that rolled in. Such breakers were really ferocious, and it was unsafe to meet them on top of the board. But Freeth showed me, so that whenever I saw one of that calibre rolling down on me, I slid off the rear end of the board and dropped down beneath the surface, my arms over my head and holding the board. Thus, if the wave ripped the board out of my hands and tried to strike me with it (a common trick of such waves), there would be a cushion of water a foot or more in depth, between my head and the blow. When the wave passed, I climbed upon the board and paddled on. Many men have been terribly injured, I learn, by being struck by their boards.