It looked easy on paper. Here was Hilo and there was our objective, 128° west longitude. With the northeast trade blowing we could travel a straight line between the two points, and even slack our sheets off a goodly bit. But one of the chief troubles with the trades is that one never knows just where he will pick them up and just in what direction they will be blowing. We picked up the northeast trade right outside of Hilo harbour, but the miserable breeze was away around into the east. Then there was the north equatorial current setting westward like a mighty river. Furthermore, a small boat, by the wind and bucking into a big headsea, does not work to advantage. She jogs up and down and gets nowhere. Her sails are full and straining, every little while she presses her lee-rail under, she flounders, and bumps, and splashes, and that is all. Whenever she begins to gather way, she runs ker-chug into a big mountain of water and is brought to a standstill. So, with the Snark, the resultant of her smallness, of the trade around into the east, and of the strong equatorial current, was a long sag south. Oh, she did not go quite south. But the easting she made was distressing. On October 11, she made forty miles easting; October 12, fifteen miles; October 13, no easting; October 14, thirty miles; October 15, twenty-three miles; October 16, eleven miles; and on October 17, she actually went to the westward four miles. Thus, in a week she made one hundred and fifteen miles easting, which was equivalent to sixteen miles a day. But, between the longitude of Hilo and 128° west longitude is a difference of twenty-seven degrees, or, roughly, sixteen hundred miles. At sixteen miles a day, one hundred days would be required to accomplish this distance. And even then, our objective, 128° west longitude, was five degrees north of the Line, while Nuka-hiva, in the Marquesas, lay nine degrees south of the Line and twelve degrees to the west! Every day and every day this unending battle goes on. Ukiukiu is the name of the trade-wind that comes raging down out of the north-east and hurls itself upon Haleakala. Now Haleakala is so bulky and tall that it turns the north-east trade-wind aside on either hand, so that in the lee of Haleakala no trade-wind blows at all. On the contrary, the wind blows in the counter direction, in the teeth of the north-east trade. This wind is called Naulu. And day and night and always Ukiukiu and Naulu strive with each other, advancing, retreating, flanking, curving, curling, and turning and twisting, the conflict made visible by the cloud-masses plucked from the heavens and hurled back and forth in squadrons, battalions, armies, and great mountain ranges. Once in a while, Ukiukiu, in mighty gusts, flings immense cloud-masses clear over the summit of Haleakala; whereupon Naulu craftily captures them, lines them up in new battle-formation, and with them smites back at his ancient and eternal antagonist. Then Ukiukiu sends a great cloud-army around the eastern-side of the mountain. It is a flanking movement, well executed. But Naulu, from his lair on the leeward side, gathers the flanking army in, pulling and twisting and dragging it, hammering it into shape, and sends it charging back against Ukiukiu around the western side of the mountain. And all the while, above and below the main battle-field, high up the slopes toward the sea, Ukiukiu and Naulu are continually sending out little wisps of cloud, in ragged skirmish line, that creep and crawl over the ground, among the trees and through the canyons, and that spring upon and capture one another in sudden ambuscades and sorties. And sometimes Ukiukiu or Naulu, abruptly sending out a heavy charging column, captures the ragged little skirmishers or drives them skyward, turning over and over, in vertical whirls, thousands of feet in the air.!

“So you write books,” he said, one day when, tired and sweaty, I finished my morning’s work. “Ready about!” he called.

The Snark has been a hospital for months, and I confess that we are getting used to it. At Meringe Lagoon, where we careened and cleaned the Snark’s copper, there were times when only one man of us was able to go into the water, while the three white men on the plantation ashore were all down with fever. At the moment of writing this we are lost at sea somewhere northeast of Ysabel and trying vainly to find Lord Howe Island, which is an atoll that cannot be sighted unless one is on top of it. The chronometer has gone wrong. The sun does not shine anyway, nor can I get a star observation at night, and we have had nothing but squalls and rain for days and days. The cook is gone. Nakata, who has been trying to be both cook and cabin boy, is down on his back with fever. Martin is just up from fever, and going down again. Charmian, whose fever has become periodical, is looking up in her date book to find when the next attack will be. Henry has begun to eat quinine in an expectant mood. And, since my attacks hit me with the suddenness of bludgeon-blows I do not know from moment to moment when I shall be brought down. By a mistake we gave our last flour away to some white men who did not have any flour. We don’t know when we’ll make land. Our Solomon sores are worse than ever, and more numerous. The corrosive sublimate was accidentally left ashore at Penduffryn; the peroxide of hydrogen is exhausted; and I am experimenting with boracic acid, lysol, and antiphlogystine. At any rate, if I fail in becoming a reputable M.D., it won’t be from lack of practice. 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. Nor on the question of fever were the “Sailing Directions” any more encouraging, for in them I read: