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 charge of the inquiry, had not arrested him, but he knew well enough that if he tried to move far afield he would be instantly arrested. Horne Fisher's fragmentary hints, though he had refused to expand them as yet, had stirred the artistic temperament of the architect to a sort of wild analysis, and he was resolved to read the hieroglyph upside down and every way until it made sense. If it was something connected with a hole in the wall he would find the hole in the wall; but, as a matter of fact, he was unable to find the faintest crack in the wall. His professional knowledge told him that the masonry was all of one workmanship and one date, and, except for the regular entrance, which threw no light on the mystery, he found nothing suggesting any sort of hiding place or means of escape. Walking a narrow path between the winding wall and the wild eastward bend and sweep of the gray and feathery trees, seeing shifting gleams of a lost sunset winking almost like lightning as the clouds of tempest scudded across the sky and mingling with the first faint blue light from a slowly strengthened moon behind him, he began to feel his head going round as his heels were going round and round the blind recurrent barrier. He had thoughts on the border of thought; fancies about a fourth dimension which was itself a hole to hide anything, of seeing everything from a new angle out of a