The awful event was very sudden, and wholly unexpected. I was pouring something from one test-tube to another, and West was busy over the alcohol blast-lamp which had to answer for a Bunsen burner in this gasless edifice, when from the pitch-black room we had left there burst the most appalling and daemoniac succession of cries that either of us had ever heard. Not more unutterable could have been the chaos of hellish sound if the pit itself had opened to release the agony of the damned, for in one inconceivable cacophony was centred all the supernal terror and unnatural despair of animate nature. Human it could not have been—it is not in man to make such sounds—and without a thought of our late employment or its possible discovery both West and I leaped to the nearest window like stricken animals; overturning tubes, lamp, and retorts, and vaulting madly into the starred abyss of the rural night. I think we screamed ourselves as we stumbled frantically toward the town, though as we reached the outskirts we put on a semblance of restraint—just enough to seem like belated revellers staggering home from a debauch.