"Of course the main business lay in the cellar; so thither they descended without much delay, again making the circuit which each had vainly made before in the presence of the mad young owner. For a time everything seemed baffling, each inch of the earthen floor and stone walls having so solid and innocuous an aspect that the thought of a yawning aperture was scarcely to be entertained. Willett reflected that since the original cellar was dug without knowledge of any catacombs beneath, the beginning of the passage would represent the strictly modern delving of young Ward and his associates, where they had probed for the ancient vaults whose rumour could have reached them by no wholesome means."

"He was soon substantially narrowed down, and at last had nothing left but the small platform before the washtubs, which he tried once before in vain. Now experimenting in every possible way, and exerting a double strength, he finally found that the top did indeed turn and slide horizontally on a corner pivot. Beneath it lay a trim concrete surface with an iron manhole, to which Mr. Ward at once rushed with excited zeal. The cover was not hard to lift, and the father had quite removed it when Willett noticed the queerness of his aspect. He was swaying and nodding dizzily, and in the gust of noxious air which swept up from the black pit beneath the doctor soon recognised ample cause." -- The Case of Charles Dexter Ward