Even though he swung around in a wide circle, to approach the strange stronghold at a wide angle to his former line, such was the power of the plane that Siblin reached his destination in little more than an hour. Keying Radnor's visibeam to the visiplates of the plane, so that the distant scientist could see everything that happened, Siblin again drove a heavy beam into the unyielding pattern of green force.
Surrounded by a shell of energy, he was drawn toward the huge dome.
This time, however, the reaction was instantaneous. A fierce tongue of green flame licked out and seized the flying plane in mid-air. One wing and side panel were sliced off neatly and Siblin was thrown out violently, but he did not fall. Surrounded by a vibrant shell of energy, he was drawn rapidly toward the huge dome. The dome merged with the shell as it touched it, but the two did not coalesce. The shell passed smoothly through the dome, which as smoothly closed behind it. Siblin inside the shell, the shell inside the dome.
XVII.
Siblin never knew exactly what happened during those first few minutes, nor exactly how it happened. One minute, in his sturdy plane, he was setting up his "diversion" by directing a powerful beam of force upon the green dome of the invaders. Suddenly his rocket ship had been blasted apart and he had been hurled away from the madly spinning, gyrating wreckage.
He had a confused recollection of sitting down violently upon something very hard, and perceived dully that he was lying asprawl upon the inside of a greenishly shimmering globe some twenty feet in diameter. Its substance had the hardness of chilled steel, yet it was almost perfectly transparent, seemingly composed of cold green flame, pale almost to invisibility. He also observed, in an incurious, foggy fashion, that the great dome was rushing toward him at an appalling pace.