“Come on for a sail,” I called below to Charmian. “But put on your swimming suit. It’s going to be wet.” And now, in simple language. I shall describe how I taught myself navigation. One whole afternoon I sat in the cockpit, steering with one hand and studying logarithms with the other. Two afternoons, two hours each, I studied the general theory of navigation and the particular process of taking a meridian altitude. Then I took the sextant, worked out the index error, and shot the sun. The figuring from the data of this observation was child’s play. In the “Epitome” and the “Nautical Almanac” were scores of cunning tables, all worked out by mathematicians and astronomers. It was like using interest tables and lightning-calculator tables such as you all know. The mystery was mystery no longer. I put my finger on the chart and announced that that was where we were. I was right too, or at least I was as right as Roscoe, who selected a spot a quarter of a mile away from mine. Even he was willing to split the distance with me. I had exploded the mystery, and yet, such was the miracle of it, I was conscious of new power in me, and I felt the thrill and tickle of pride. And when Martin asked me, in the same humble and respectful way I had previously asked Roscoe, as to where we were, it was with exaltation and spiritual chest-throwing that I answered in the cipher-code of the higher priesthood and heard Martin’s self-abasing and worshipful “Oh.” As for Charmian, I felt that in a new way I had proved my right to her; and I was aware of another feeling, namely, that she was a most fortunate woman to have a man like me.!

“I never heard of him if he did. But it is only a theory of mine, this living on air. It would be fine, wouldn’t it? Of course it may be impossible—most likely it is. You see, I am not unpractical. I never forget the present. When I soar ahead into the future, I always leave a string by which to find my way back again.” And then, and later, I learned the details of the marvellous book Ernest Darling had written. Twelve years ago he lay close to death. He weighed but ninety pounds, and was too weak to speak. The doctors had given him up. His father, a practising physician, had given him up. Consultations with other physicians had been held upon him. There was no hope for him. Overstudy (as a school-teacher and as a university student) and two successive attacks of pneumonia were responsible for his breakdown. Day by day he was losing strength. He could extract no nutrition from the heavy foods they gave him; nor could pellets and powders help his stomach to do the work of digestion. Not only was he a physical wreck, but he was a mental wreck. His mind was overwrought. He was sick and tired of medicine, and he was sick and tired of persons. Human speech jarred upon him. Human attentions drove him frantic. The thought came to him that since he was going to die, he might as well die in the open, away from all the bother and irritation. And behind this idea lurked a sneaking idea that perhaps he would not die after all if only he could escape from the heavy foods, the medicines, and the well-intentioned persons who made him frantic.

Also, during the attack of fever, Charmian developed a Solomon sore. It was the last straw. Every one on the Snark had been afflicted except her. I had thought that I was going to lose my foot at the ankle by one exceptionally malignant boring ulcer. Henry and Tehei, the Tahitian sailors, had had numbers of them. Wada had been able to count his by the score. Nakata had had single ones three inches in length. Martin had been quite certain that necrosis of his shinbone had set in from the roots of the amazing colony he elected to cultivate in that locality. But Charmian had escaped. Out of her long immunity had been bred contempt for the rest of us. Her ego was flattered to such an extent that one day she shyly informed me that it was all a matter of pureness of blood. Since all the rest of us cultivated the sores, and since she did not—well, anyway, hers was the size of a silver dollar, and the pureness of her blood enabled her to cure it after several weeks of strenuous nursing. She pins her faith to corrosive sublimate. Martin swears by iodoform. Henry uses lime-juice undiluted. And I believe that when corrosive sublimate is slow in taking hold, alternate dressings of peroxide of hydrogen are just the thing. There are white men in the Solomons who stake all upon boracic acid, and others who are prejudiced in favour of lysol. I also have the weakness of a panacea. It is California. I defy any man to get a Solomon Island sore in California. By the time we went about again, darkness had fallen. We were now to windward of the Snark, and the squall was howling. In came the jib, and down came the mainsail, all but a patch of it the size of a pillow-slip. By an accident we missed the Snark, which was riding it out to two anchors, and drove aground upon the inshore coral. Running the longest line on the Snark by means of the launch, and after an hour’s hard work, we heaved the cutter off and had her lying safely astern. How it came to me I know not—call it an inspiration if you will; but the thought arose in me: if southing is latitude, why isn’t westing longitude? Why should I have to change westing into longitude? And then the whole beautiful situation dawned upon me. The meridians of longitude are 60 miles (nautical) apart at the equator. At the poles they run together. Thus, if I should travel up the 180° meridian of longitude until I reached the North Pole, and if the astronomer at Greenwich travelled up the 0 meridian of longitude to the North Pole, then, at the North Pole, we could shake hands with each other, though before we started for the North Pole we had been some thousands of miles apart. Again: if a degree of longitude was 60 miles wide at the equator, and if the same degree, at the point of the Pole, had no width, then somewhere between the Pole and the equator that degree would be half a mile wide, and at other places a mile wide, two miles wide, ten miles wide, thirty miles wide, ay, and sixty miles wide.