A few moments later the second monster arrived. The eagle saw at once that the two were enemies. The first dived headlong at the second, spitting fire, with a loud and dreadful rap-rap-rapping noise, from its strange blunt muzzle. The two circled around each other, and over and under each other, at a speed which made even the eagle dizzy with amazement; and he saw that it was something more deadly than fire which spurted from their blunt snouts; for every now and then small things, which travelled too fast for him to see, twanged past him with a vicious note which he knew for the voice of death. He edged discreetly farther away. Evidently this battle of the giants was dangerous to spectators. His curiosity was beginning to get sated. He was on the point of leaving the danger area altogether, when the dreadful duel came suddenly to an end. He saw the second monster plunge drunkenly, in wild, ungoverned lurches, and then drop head first, down, down, down, straight as a stone, till it crashed into the earth and instantly burst into flame. He saw the great still eyes of the victor staring down inscrutably upon the wreck of its foe. Then he saw it whirl sharply--tilting its rigid wings at so steep an angle that it almost seemed about to overturn--and dart away again in the direction from which it had come. He saw the reason for this swift departure. A flock of six more monsters, of the breed of the one just slain, came sweeping up from the south to take vengeance for their comrade's defeat. The eagle had no mind to await them. He had had enough of wonders, and the call in his heart had suddenly grown clear and intelligible. Mounting still upward till he felt the air growing thin beneath his wing-beats, he headed northwards as fast as he could fly. He had no more interest now in the amazing panorama which unrolled beneath him, in the thundering and screaming flights of shell which sped past in the lower strata of the air. He was intent only upon gaining the wild solitudes of which he dreamed. He marked others of the monsters which he so dreaded, journeying sometimes alone, sometimes in flocks, but always with the same implacable directness of flight, always with that angry and menacing hum which, of all the sounds he had ever heard, alone had power to shake his bold heart. He noticed that sometimes the sky all about these monsters would be filled with sudden bursts of fleecy cloud, looking soft as wool; and once he saw one of these apparently harmless clouds burst full on the nose of one of the monsters, which instantly flew apart and went hurtling down to earth in revolving fragments. But he was no longer curious. He gave them all as wide a berth as possible, and sped on, without delaying to note their triumphs or their defeats.