as the eyelid of a bird sweeps across its eye, and the picture was clear again. And now Graham beheld men running down among the wind-wheels, pointing weapons from which jetted out little smoky flashes. They swarmed thicker and thicker to the right, gesticulating—it might be they were shouting, but of that the picture told nothing. They and the wind-wheels passed slowly and steadily across the field of the mirror.
"Now," said Ostrog, "comes the Council House," and a black edge crept into view and gathered Graham's attention. Soon it was no longer an edge but a cavity, a huge blackened space amidst the clustering edifices, and from it thin spires of smoke rose into the pallid winter sky. Gaunt ruinous masses of the building, mighty truncated piers and girders, rose dismally out of this cavernous darkness. And over these vestiges of some splendid place, countless minute men were clambering, leaping, swarming.
"This is the Council House," said Ostrog. "Their last stronghold. And the fools wasted enough ammunition to hold out for a month in blowing up the buildings all about them—to stop our attack. You heard the smash? It shattered half the brittle glass in the city."
And while he spoke, Graham saw that beyond this area of ruins, overhanging it and rising to a great height, was a ragged mass of white building. This mass had been isolated by the ruthless destruction of its surroundings. Black gaps marked the passages the disaster had torn apart; big halls had been slashed open and the decoration of their interiors showed dis-
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