At the word of command there flamed out almost as one a thousand lances of energy intolerable. Masonry, brickwork, steel, glass, and chromium trim disappeared; flaring away in sparkling, hissing vapor or cascading away in brilliantly mobile streams of fiery, corrosive liquid. Disappeared, revealing the unbearably incandescent surface of the Boskonian defensive screen.
Full–driven, that barrier held, even against the Titanic thrusts of the maulers above and of the heavy defense–guns below. Energy rebounded in scintillating torrents, shot off in blinding streamers, released itself in bolts of lightning hurling themselves frantically to ground.
Nor was that superbly–disguised citadel designed for defense alone. Knowing now that the last faint hope of continuing in business upon Bronseca was gone, and grimly determined to take full toll of the hated Patrol, the defenders in turn loosed their beams. Five of them shot out simultaneously, and five of the panels of mobile screen flamed instantly into eye–tearing violet Then black. These were not the comparatively feeble, antiquated beams which Haynes had expected, but were the output of up–to–the–minute, first–line space artillery!
Defenses down, it took but a blink of time to lick up the caterpillars. On, then, the destroying beams tore, each in a direct line for a remote–control station. Through tremendous edifices of masonry and steel they drove, the upper floors collapsing into the cylinder of annihilation only to be consumed almost as fast as they could fall.
"All screen–control stations, back! Fast!" Haynes directed, crisply. "Back, dodging. Put your screens on automatic block until you get back beyond effective range. Spy–ray men! See if you can locate the enemy observers directing fire!"
Three or four of the crews were caught, but most of the men were able to get away, to move back far enough to save their lives and their equipment. But no matter how far back they went, Boskonian beams still sought them out in grimly persistent attempts to slay. Their shielding fields blazed white, their refractories wavered in the high blue as the overdriven refrigerators strove mightily to cope with the terrific load. The operators, stifling, almost roasting in their armor of proof, shook sweat from the eyes they could not reach as they drove themselves and their mechanisms on to even greater efforts; cursing luridly, fulminantly the while at carrying on a space–war in the hotly reeking, the hellishly reflecting and heat–retaining environment of a metropolis!
And all around the embattled structure, within the Patrol's now partially open wall of screen, spread holocaust supreme, holocaust spreading wider and wider during each fractional split second. In an instant, it seemed, nearby buildings burst into Same. The fact that they were fireproof meant nothing whatever. The air inside them, heated in moments to a point far above the ignition temperature of organic material, fed furiously upon furniture, rugs, drapes, and whatever else had been left in place. Even without such adventitious aids the air itself, expanding tremendously, irresistibly, drove outward before it the glass of windows and the solid brickwork of walls. And as they fell glass and brick ceased to exist as such. Falling, they fused; coalescing and again splashing apart as they descended through the inferno of annihilatory vibrations in an appalling rain which might very well have been sprinkled from the hottest middle of the central core of hell itself. And in this fantastically potent, this incredibly corrosive flood the very ground, the metaled pavement, the sturdily immovable foundations of sky–scrapers, dissolved as do lumps of sugar in boiling coffee. Dissolved, slumped down, flowed away in blindingly turbulent streams. Superstructures toppled into disintegration, each discrete particle contributing as it fell to the utterly indescribable fervency of the whole.
More and more panels of mobile screen went down. They were not designed to stand up under such heavy projectors as "Wembleson's" mounted, and the Boskonians blasted them down in order to get at the remote–control operators back of them. Swath after swath of flaming ruin was cut through the Bronsecan metropolis as the enemy gunners followed the dodging caterpillar tractors.
"Drop down, maulers!" Haynes ordered. "Low enough so that your screens touch ground. Never mind damage—they'll blast the whole city if we don't stop those beams. Surround him!"
Down the maulers came, ringwise; mighty protective envelopes overlapping, down^until the screens bit ground. Now the caterpillar and mobile–screen crews were safe; powerful as Prellin's weapons were, they could not break through those maulers' screens.
Now holocaust waxed doubly infernal. The wall was tight, the only avenue of escape of all that fiercely radiant energy was straight upward; adding to the furor were the flaring underlets—themselves destructive agents by no means to be despised!
Inside the screens, then, raged pure frenzy. At the line raved the maulers' prodigious lifting blasts. Out and away, down every avenue of escape, swept torrents of superheated air at whose touch anything and everything combustible burst into flame. But there could be no firefighting—yet. Outlying fires, along the line of destruction previously cut, yes; but personal armor has never been designed to enable life to exist in such an environment as that near those screens then was.
"Burn out the –ground under them!" came the order. 'Tip them over—slag them down!"
Sharply downward angled two–score of the beams which had been expending their energies upon Boskone's radiant defenses. Downward into the lake of lava which had once been pavement. That lake had already been seething and bubbling; from moment to moment emitting bursts of lambent flame. Now it leaped into a frenzy of its own, a transcendent fury of volatilization. High–explosive shells by the hundred dropped also into the incandescent mess, hurling the fiery stuff afar; deepening, broadening the sulphurous moat .
"Deep enough," Haynes spoke calmly into his microphone. "Tractors and pressors as assigned—tip him over."
The intensity of the bombardment did not slacken, but from the maulers to the north there reached out pressors, from those upon the south came tractors: each a beam of terrific power, each backed by all the mass and all the driving force of a veritable flying fortress.
Slowly that which had been a building leaned from the perpendicular, its inner defensive screen still intact.
"Chief?" From his post as observer Kinnison flashed a thought to Haynes. "Are you beginning to think any funny thoughts about that ape down there?"
"No. Are you? What?" asked the Port Admiral in surprise.
"Maybe I'm nuts, but it wouldn't surprise me if he'd start doing a flit pretty quick. I've got a CRX tracer on him, just in case, and it might be smart to caution Henderson to be on his toes."
"Your diagnosis—'nuts'—is correct, I think," came the answering thought; but the Port Admiral followed the suggestion, nevertheless.
And none too soon. Deliberately, grandly the Colossus was leaning over, bowing in stately fashion toward the awful lake in which it stood. But only so far. Then there was a flash, visible even in the inferno of energies already there at war, and the already coruscant lava was hurled to all points of the compass as the full–blast drive of a superdreadnought was cut loose beneath its surface!
To the eye the thing simply and instantly disappeared; but not to the ultra– vision of the observers' plates, and especially not to the CRX tracers solidly attached by Kinnison and by Henderson. They held, and the chief pilot, already warned, was on the trail as fast as he could punch his keys.