ick was too late. By a whole minute he had missed his chance. He realized that immediately, for before the red light had flared from his pistol, the hostile planes were in the air. He had flown too low, and given the alarm.
It meant a fight now, instead of a mad dog destruction, and Dick did not underestimate the power of the enemy. But he felt a thrill of furious satisfaction at the prospect of battle. From every plane the bombs were falling. Underneath, ruin and destruction, and leaping flames—and yet darkness, save for the phosphorescent outlines of the buildings.
And the lines of these were broken, converging into strange criss-crosses of luminosity, as the beams fell in shapeless heaps. Dark fire, sweeping through the headquarters of the Invisible Emperor, a veritable hell for those below! A taste of the hell that they had made for others!
Then a strange phenomenon obtruded itself upon Dick's notice. Nothing was audible! The bombs were falling, but they were falling silently. No sound came up from beneath. And, except for the throbbing of his engine, Dick would have thought it had stopped. He could no longer hear it.
That terrific holocaust of death and destruction was inaudible. Skimming the upper reach of the air, high above that wall of darkness, Dick saw old Luke Evans pick up his end of the speaking-tube, and mechanically followed suit. He could see the old man's lips moving. But he heard nothing!
And now another phenomenon was borne in on his notice. His flight were perhaps five hundred feet beneath him, hovering a little above the barrage of black gas. But they were converging oddly. And there was no sight of the airplanes that Dick had just seen taking off from the invisible tarmac.