“Put it back, please, oh, put it back,” Martin pleaded. “You were too quick for me.” My heart almost stood still waiting the answer. By that answer my professional medical prestige stood or fell. Martin, I could see, was quite sure it was going to fall. And then the answer—O blessed answer!!

And that is how it came about that I tackled surf-riding. And now that I have tackled it, more than ever do I hold it to be a royal sport. But first let me explain the physics of it. A wave is a communicated agitation. The water that composes the body of a wave does not move. If it did, when a stone is thrown into a pond and the ripples spread away in an ever widening circle, there would appear at the centre an ever increasing hole. No, the water that composes the body of a wave is stationary. Thus, you may watch a particular portion of the ocean’s surface and you will see the same water rise and fall a thousand times to the agitation communicated by a thousand successive waves. Now imagine this communicated agitation moving shoreward. As the bottom shoals, the lower portion of the wave strikes land first and is stopped. But water is fluid, and the upper portion has not struck anything, wherefore it keeps on communicating its agitation, keeps on going. And when the top of the wave keeps on going, while the bottom of it lags behind, something is bound to happen. The bottom of the wave drops out from under and the top of the wave falls over, forward, and down, curling and cresting and roaring as it does so. It is the bottom of a wave striking against the top of the land that is the cause of all surfs. CHAPTER XIV THE AMATEUR NAVIGATOR

Then there was the fishing. One did not have to go in search of it, for it was there at the rail. A three-inch steel hook, on the end of a stout line, with a piece of white rag for bait, was all that was necessary to catch bonitas weighing from ten to twenty-five pounds. Bonitas feed on flying-fish, wherefore they are unaccustomed to nibbling at the hook. They strike as gamely as the gamest fish in the sea, and their first run is something that no man who has ever caught them will forget. Also, bonitas are the veriest cannibals. The instant one is hooked he is attacked by his fellows. Often and often we hauled them on board with fresh, clean-bitten holes in them the size of teacups. So the Snark comes back on her course. The breath increases to a tiny puff. The Snark feels the weight of it and actually heels over a trifle. There is flying scud overhead, and I notice the stars being blotted out. Walls of darkness close in upon me, so that, when the last star is gone, the darkness is so near that it seems I can reach out and touch it on every side. When I lean toward it, I can feel it loom against my face. Puff follows puff, and I am glad the mizzen is furled. Phew! that was a stiff one! The Snark goes over and down until her lee-rail is buried and the whole Pacific Ocean is pouring in. Four or five of these gusts make me wish that the jib and flying-jib were in. The sea is picking up, the gusts are growing stronger and more frequent, and there is a splatter of wet in the air. There is no use in attempting to gaze to windward. The wall of blackness is within arm’s length. Yet I cannot help attempting to see and gauge the blows that are being struck at the Snark. There is something ominous and menacing up there to windward, and I have a feeling that if I look long enough and strong enough, I shall divine it. Futile feeling. Between two gusts I leave the wheel and run forward to the cabin companionway, where I light matches and consult the barometer. “29-90” it reads. That sensitive instrument refuses to take notice of the disturbance which is humming with a deep, throaty voice in the rigging. I get back to the wheel just in time to meet another gust, the strongest yet. Well, anyway, the wind is abeam and the Snark is on her course, eating up easting. That at least is well. Once she came in from the garden, all upset. A moment before (and she showed the place), the father and daughter had appeared to her, one after the other; they did nothing but look at her.