As he said this, his jaws came together, and Zaidie saw a look in his eyes that she had never seen there before. He signalled rapidly two or three times to Murgatroyd. The propellers began to whirl at their utmost speed, and the Astronef, making a spiral downward course, swooped down on to the Martian fleet with terrific velocity. Her last curve coincided almost exactly with the circle occupied by the ships. Half-a-dozen spouts of greenish flame came from the nearest vessel, and for a moment the Astronef was enveloped in a yellow mist.

"Evidently they don't know that we are air-tight, and they don't use shot or shell. They've got past that. Their projectiles kill by poison or suffocation. I daresay a volley like that would kill a regiment. Now I'll give that fellow a lesson which he won't live to remember."

They swept through the poison-mist. Redgrave swung the wheel round. The Astronef dropped to the level of the ring of Martian vessels, which had now got up speed again. Her steel ram was directed straight at the vessel which had fired the last shot. Propelled at a speed of nearly two hundred miles an hour, it took the strange-winged craft amidships. As the shock came, Redgrave put his arm round Zaidie's waist and held her close to him, otherwise she would have been flung against the forward wall of the conning-tower.


It took the strange-winged craft amidships.


The Martian vessel stopped and bent up. They saw human figures more than half as large again as men inside her staring at them through the windows in the sides. There were others at the breaches of the guns in the act of turning the muzzles on the Astronef; but this was only a momentary glimpse, for in a second the Astronef's spur had pierced her, the Martian air-ship broke in twain, and her two halves plunged downwards through the rosy clouds.

"Keep her at full speed, Andrew," said Redgrave down the speaking-tube, "and stand by to jump if we want to."