What followed, I shall never positively know. It may have been wholly an hallucination from the shock caused at that instant by the sudden and complete destruction of the building in a cataclysm of German shell-fire—who can gainsay it, since West and I were the only proved survivors? West liked to think that before his recent disappearance, but there were times when he could not; for it was queer that we both had the same hallucination. The hideous occurrence itself was very simple, notable only for what it implied.