this—that the flame of the lantern set down near the altar was slightly but certainly flickering from a draught of air which it had not before received, and which came indubitably from the crevice between the floor and the altar where Norrys was scraping away the lichens.
We spent the rest of the night in the brilliantly-lighted study, nervously discussing what we should do next. The discovery that some vault deeper than the deepest known masonry of the Romans underlay this accursed pile; some vault unsuspected by the curious antiquarians of three centuries; would have been sufficient to excite us without any background of the sinister. As it was, the fascination became two-fold; and we paused in doubt whether to abandon our search and quit the priory forever in superstitious caution, or to gratify our sense of adventure and brave whatever horrors might await us in the unknown depths.
By morning we had compromised, and decided to go to London to gather a group of archaeologists and scientific men fit to cope with the mystery. It should be mentioned that before leaving the sub-cellar we had vainly tried to move the central altar which we now recognized as the gate to a new pit of nameless fear. What secret would open the gate, wiser men than we would have to find.
During many days in London Capt. Norrys and I presented our facts, conjectures, and legendary anecdotes to five eminent authorities, all men who could be trusted to respect any family disclosures which future explorations might develop. We found most of them little disposed to scoff, but, instead, intensely interested and sincerely sympathetic. It is hardly necessary to name them all, but I may say that they included Sir William Brinton, whose excavations in the Troad excited most of the world in their day. As we all took the train for Anchester I felt myself poised on the brink of frightful revelations, a sensation symbolized by the air of mourning among the many Americans at the unexpected death of the President on the other side of the world.
On the evening of August 7 we reached Exham Priory, where the servants assured me that nothing unusual had occurred. The cats, even old Nigger-Man, had been perfectly placid; and not a trap in the house had been sprung. We were to begin exploring on the following day, awaiting which I assigned well-appointed rooms to all my guests.
I myself retired in my own tower chamber, with Nigger-Man across my feet. Sleep came quickly, but hideous dreams assailed me. There was a vision of a Roman feast like that of Trimalchio, with a horror in a covered platter. Then came that damnable, recurrent thing about the swineherd and his filthy drove in the twilit grotto. Yet when I awoke it was full daylight, with normal sounds in the house below. The rats, living or spectral, had not troubled me; and Nigger-Man was still quietly asleep. On going down, I found that the same tranquility had prevailed elsewhere; a condition which one of the assembled servants—a fellow named Thornton, devoted to the psychic—rather absurdly laid to the fact that I had now been shown the thing which certain forces had wished to show me.
All was now ready, and at 11 A . M . our entire group of seven men, bearing powerful electric searchlights and implements of excavation, went down to the sub-cellar and bolted the door behind us. Nigger-Man was with us, for the investigators found no occasion to despise his excitability, and were indeed anxious that he be present in case of obscure rodent manifestations. We noted the Roman inscriptions and unknown altar designs only briefly, for three of the savants had already seen them, and all knew their characteristics. Prime attention was paid to the momentous central altar, and within an hour Sir William Brinton had caused it to tilt backward, balanced on some unknown species of counterweight.
There now lay revealed such a horror as would have overwhelmed us had we not been prepared. Through a nearly square opening