While these tactics were under discussion the two-and-thirty winds of heaven continued, as before, to beat about the tower, though their onsets appeared to be somewhat lessening in force. Himself now calmed and satisfied, Swithin, as is the wont of humanity, took serener views of Nature’s crushing mechanics without, and said, ‘The wind doesn’t seem disposed to put the tragic period to our hopes and fears that I spoke of in my momentary despair.’
‘The disposition of the wind is as vicious as ever,’ she answered, looking into his face with pausing thoughts on, perhaps, other subjects than that discussed. ‘It is your mood of viewing it that has changed. “There is nothing either good or bad, but thinking makes it so.”’
And, as if flatly to stultify Swithin’s assumption, a circular hurricane, exceeding in violence any that had preceded it, seized hold upon Rings-Hill Speer at that moment with the determination of a conscious agent. The first sensation of a resulting catastrophe was conveyed to their intelligence by the flapping of the candle-flame against the lantern-glass; then the wind, which hitherto they had heard rather than felt, rubbed past them like a fugitive. Swithin beheld around and above him, in place of the concavity of the dome, the open heaven, with its racing clouds, remote horizon, and intermittent gleam of stars. The dome that had covered the tower had been whirled off bodily; and they heard it descend crashing upon the trees.
Finding himself untouched Swithin stretched out his arms towards Lady Constantine, whose apparel had been seized by the spinning air, nearly lifting her off her legs. She, too, was as yet unharmed. Each held the other for a moment, when, fearing that something further would happen, they took shelter in the staircase.
‘Dearest, what an escape!’ he said, still holding her.
‘What is the accident?’ she asked. ‘Has the whole top really gone?’
‘The dome has been blown off the roof.’
As soon as it was practicable he relit the extinguished lantern, and they emerged again upon the leads, where the extent of the disaster became at once apparent. Saving the absence of the enclosing hemisphere all remained the same. The dome, being constructed of wood, was light by comparison with the rest of the structure, and the wheels which allowed it horizontal, or, as Swithin expressed it, azimuth motion, denied it a firm hold upon the walls; so that it had been lifted off them like a cover from a pot. The equatorial stood in the midst as it had stood before.
Having executed its grotesque purpose the wind sank to comparative mildness. Swithin took advantage of this lull by covering up the instruments with cloths, after which the betrothed couple prepared to go downstairs.
But the events of the night had not yet fully disclosed themselves. At this moment there was a sound of footsteps and a knocking at the door below.