The Nebuly Coat by John Meade Falkner

The scheme of restoration had been duly revised in the light of Lord Blandamer's generosity, and the work had now entered on such a methodical progress that Westray was able on occasion to relax something of that close personal supervision which had been at first so exacting. Mr. Sharnall often played for half an hour or more after the evening-service, and on such occasions Westray found time, now and then, to make his way to the organ-loft. The organist liked to have him there; he was grateful for the token of interest, however slight, that was implied in such visits; and Westray, though without technical knowledge, found much to interest him in the unfamiliar surroundings of the loft. It was a curious little kingdom of itself, situate over the great stone screen, which at Cullerne divides the choir from the nave, but as remote and cut off from the outside world as a desert island. Access was gained to it by a narrow, round, stone staircase, which led up from the nave at the south end of the screen. After the bottom door of this windowless staircase was opened and shut, anyone ascending was left for a moment in bewildering darkness. He had to grope the way by his feet feeling the stairs, and by his hand laid on the central stone shaft which had been polished to the smoothness of marble by countless other hands of past times.

But, after half a dozen steps, the darkness resolved; there was first the dusk of dawn, and soon a burst of mellow light, when he reached the stairhead and stepped out into the loft. Then there were two things which he noticed before any other -- the bow of that vast Norman arch which spanned the opening into the south transept, with its lofty and over-delicate roll and cavetto mouldings; and behind it the head of the Blandamer window, where in the centre of the infinite multiplication of the tracery shone the sea-green and silver of the nebuly coat. Afterwards he might remark the long-drawn roof of the nave, and the chevroned ribs of the Norman vault, delimiting bay and bay with a saltire as they crossed; or his eyes might be led up to the lantern of the central tower, and follow the lighter ascending lines of Abbot Vinnicomb's Perpendicular panelling, till they vanished in the windows far above.