Kirby felt his lips tightening in a grim smile at the thought that jealousy was not unknown even to the semi-human creatures of this neither world. He looked at Nini and Ivana during a stretched out second. Then he moved. "Good," he snapped. "We go on at once." That was his only recognition of what was surely one of the important happenings of a lifetime. But for all that, his tired brain, which so lately had felt the chill of black depression, was suddenly set on fire with triumph and thanksgiving. CHAPTER XII As they marched rapidly, the ape-woman, who called herself Gori, succeeded in making them understand that most of the ape-tribes, commanded by the Duca and his caciques, were assembled in the central community toward which they were heading, that grave danger of some sort threatened Naida, and that the need for haste was great. But what the danger was, the two girls could not understand. "We can't make out what is going to happen--what they plan to do to-night," Ivana whispered at last to Kirby. "All Gori says is that we must rescue Naida and take her away, and must take the Duca away so that he cannot influence the men any more. And she keeps repeating that we must hurry." "And you can't find out what we must rescue Naida _from_?" Ivana shook her head. "I'm afraid we're facing something of an appalling nature, as dangerous to ourselves as to Naida. But I know nothing more." By the time the silver glow which corresponded to moonlight flooded the jungle, Gori had left the open trail, and was leading them across country which humans could not have negotiated without the guidance she offered. Advancing cautiously always, she stopped for long seconds at a time to reconnoitre, shifting her huge ears about and changing their shape, twitching her nostrils, and glancing hither and thither with bright little eyes. Sometimes they passed immense spike-tipped flowers ten feet in diameter, with fleshy yellow leaves which gave out a nauseating stench. Vines with long, recurved thorns and blossoms of deep scarlet, laced the undergrowth together and made passing dangerous. Fire-flies drifted past, and all above and about them flapped moths as big as bats. Kirby, his clothes almost torn from his body, sweat pouring from every pore, heard the labored breathing of the girls, and wondered how they could hang on. But they did, and after a long time, Gori, halting in the midst of a slight clearing, held up a warning hand. * * * * * A queer sensation came over Kirby. As he stared and listened, he realized that the twinkles he saw far ahead were not fire-flies, as he had thought, but lights. In the frosted moon glow, Nini and Ivana drew close, and Kirby clasped their hands and pressed them for a second. Too tired to exult further he was, even though they seemed close to their goal of goals.