Now Deviation is the variation in the needle caused by the distribution of iron on board of ship. This purely local variation I derived from the deviation card of my standard compass and then applied to the Correct Magnetic Course. The result was the Compass Course. And yet, not yet. My standard compass was amidships on the companionway. My steering compass was aft, in the cockpit, near the wheel. When the steering compass pointed west-by-south three-quarters-south (the steering course), the standard compass pointed west-one-half-north, which was certainly not the steering course. I kept the Snark up till she was heading west-by-south-three-quarters-south on the standard compass, which gave, on the steering compass, south-west-by-west. “The Compass Course is the course to steer, and is derived from the Correct Magnetic Course by applying to it the Deviation.”!

“Of course,” he added, “these are only theories of mine. I like to speculate upon the glorious future of man. Levitation may not be possible, but I like to think of it as possible.” “So Adam Eve these two fella go along scrub. And God He make ’m one big fennis (fence) all around garden and He put ’m one fella marster belong God along fennis. And He give this fella marster belong God one big fella musket, and He speak, ‘S’pose you look ’m these two fella Adam Eve, you shoot ’m plenty too much.’”

And now, in a cooler moment, I hasten to blab the whole simplicity of it, to blab on Roscoe and the other navigators and the rest of the priesthood, all for fear that I may become even as they, secretive, immodest, and inflated with self-esteem. And I want to say this now: any young fellow with ordinary gray matter, ordinary education, and with the slightest trace of the student-mind, can get the books, and charts, and instruments and teach himself navigation. Now I must not be misunderstood. Seamanship is an entirely different matter. It is not learned in a day, nor in many days; it requires years. Also, navigating by dead reckoning requires long study and practice. But navigating by observations of the sun, moon, and stars, thanks to the astronomers and mathematicians, is child’s play. Any average young fellow can teach himself in a week. And yet again I must not be misunderstood. I do not mean to say that at the end of a week a young fellow could take charge of a fifteen-thousand-ton steamer, driving twenty knots an hour through the brine, racing from land to land, fair weather and foul, clear sky or cloudy, steering by degrees on the compass card and making landfalls with most amazing precision. But what I do mean is just this: the average young fellow I have described can get into a staunch sail-boat and put out across the ocean, without knowing anything about navigation, and at the end of the week he will know enough to know where he is on the chart. He will be able to take a meridian observation with fair accuracy, and from that observation, with ten minutes of figuring, work out his latitude and longitude. And, carrying neither freight nor passengers, being under no press to reach his destination, he can jog comfortably along, and if at any time he doubts his own navigation and fears an imminent landfall, he can heave to all night and proceed in the morning. This is the way it is done. The canoes form in line, one hundred to two hundred feet apart. In the bow of each canoe a man wields a stone, several pounds in weight, which is attached to a short rope. He merely smites the water with the stone, pulls up the stone, and smites again. He goes on smiting. In the stern of each canoe another man paddles, driving the canoe ahead and at the same time keeping it in the formation. The line of canoes advances to meet a second line a mile or two away, the ends of the lines hurrying together to form a circle, the far edge of which is the shore. The circle begins to contract upon the shore, where the women, standing in a long row out into the sea, form a fence of legs, which serves to break any rushes of the frantic fish. At the right moment when the circle is sufficiently small, a canoe dashes out from shore, dropping overboard a long screen of cocoanut leaves and encircling the circle, thus reinforcing the palisade of legs. Of course, the fishing is always done inside the reef in the lagoon. “The Compass Course is the course to steer, and is derived from the Correct Magnetic Course by applying to it the Deviation.”