Paul and Bob had stayed up on purpose to witness this event, and by dead reckoning had computed their position so closely that John's announcement had come just as they were about to make a similar statement. Although they could see no "line" stretching along down there in the sea, they fancied they could, with the most pleasant imagery. That great line, the belt of the universe, dividing the Northern and Southern hemispheres, they had already crossed once, in their zigzagging course, at the mouth of the Amazon. Now here in the South China Sea they were crossing it a second time. At no time had they been more than thirteen degrees away from it. One more crossing of it, if all went well, and they would be almost within sight of the end of their journey--Panama! With this pleasant thought Bob and Paul rolled up in their hammocks, trusting John and Tom to bring them safely through the bad weather that seemed in store, and were soon asleep. To the two older flyers, used to all conditions of aerial passage as a result of several years' experience, the present conditions were not at all terrifying. Although the spectacle of the dark clouds in front of them was extremely uncanny, they realized that they were only local thunder showers which could probably be avoided by a little careful navigating. In this they were right. By wheeling a little out of their course, to the left or right, and by flying up over one big cloud which could not be avoided in any other manner, they managed to dodge the most dangerous fields of lightning and the worst torrents of rain. Presently they left the dark clouds far behind, and once more the stars appeared in the blue firmament above and the pale moon lit up the tropical sea. With relief John guided the Sky-Bird lower, so that they could keep a sharp lookout for guide-posts of land. They passed several small islets which were uncharted with them, but when, about midnight, they made out a great black blotch not far ahead, they recognized it as the southern end of the island of Borneo, and knew they were all right. In a little while Borneo was sweeping along below them, its mangroved shores gloomy and desolate-looking, not to say weird, in the pale moonlight. Among those dense forests and thickets the flyers knew many a wild animal was prowling at that very moment, and in the thatched huts in the glens slept many a fierce-visaged savage with weapons close at hand.