Then waves of molten matter rose up again out of the gulfs, tens of miles high and hundreds of miles long, surged forward, and met with a concussion like that of millions of earthly thunder-clouds. Minute after minute they remained writhing and struggling with each other, flinging up spurts of flaming matter far above their crests. Other waves followed them, climbing up their bases as a sea-surge runs up the side of a smooth, slanting rock. Then from the midst of them a jet of living fire leapt up hundreds of miles into the lurid atmosphere above, and then, with a crash and a roar which shook the vast Jovian firmament, the battling lava-waves would split apart and sink down into the all-surrounding fire-ocean, like two grappling giants who had strangled each other in their final struggle. "It's just Hell let loose!" said Murgatroyd to himself as he looked down upon the terrific scene through one of the port-holes of the engine-room; "and, with all respect to my lord and her ladyship, those that come this near almost deserve to stop in it." Meanwhile, Redgrave and Zaidie and their three guests were so absorbed in the tremendous spectacle, that for a few moments no one noticed that they were dropping faster and faster towards the world which Murgatroyd, according to his lights, had not inaptly described. As for Zaidie, all her fears were for the time being lost in wonder, until she saw her husband take a swift glance round upwards and downwards, and then go up into the conning-tower. She followed him quickly, and said: "What is the matter, Lenox, are we falling too quickly?" "Much faster than we should," he replied, sending a signal to Murgatroyd to increase the force by three-tenths. The answering signal came back, but still the _Astronef_ continued to fall with terrific rapidity, and the awful landscape beneath them--a landscape of fire and chaos--broadened out and became more and more distinct. He sent two more signals down in quick succession. Three-fourths of the whole repulsive power of the engines was now being exerted--a force which would have been sufficient to hurl the _Astronef_ up from the surface of the Earth like a feather in a whirlwind. Her downward course became a little slower, but still she did not stop. Zaidie, white to the lips, looked down upon the hideous scene beneath and slipped her hand through Redgrave's arm. He looked at her for an instant and then turned his head away with a jerk, and sent down the last signal. The whole energy of the engines was now directing the maximum of the R. Force against the surface of Jupiter, but still, as every moment passed in a speechless agony of apprehension, it grew nearer and nearer. The fire-waves mounted higher and higher, the roar of the fiery surges grew louder and louder. Then in a momentary lull, he put his arm round her, drew her close up to him and kissed her and said: "That's all we can do, dear. We've come too close and he's too strong for us."