alienists, resolved during their final conference to undertake a joint exploration of unparalleled thoroughness; and agreed to meet at the bungalow on the following morning with valises and with certain tools and accessories suited to architectural search and underground exploration.
The morning of April sixth dawned clear, and both explorers were at the bungalow by ten o'clock. Mr. Ward had the key, and an entry and cursory survey were made. From the disordered condition of Dr. Allen's room it was obvious that the detectives had been there before, and the later searchers hoped that they had found some clue which might prove of value. 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.
The doctor tried to put himself in Charles's place to see how a delver would be likely to start, but could not gain much inspiration from this method. Then he decided on elimination as a policy, and went carefully over the whole subterranean surface both vertical and horizontal, trying to account for every inch separately. He was soon substantially narrowed down, and at last had nothing left but the small platform before the washtubs, which he had tried once before in vain. Now experimenting in every way possible, 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.
In a moment Dr. Willett had his fainting companion on the floor above and was reviving him with cold water. Mr. Ward responded feebly, but it could be seen that the mephitic blast
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