lonely post that Saturday night he stood stock-still, leaning against the trunk of a large tree, staring into the darkness in his front and trying to recognize known objects; for he had been posted at the same spot during the day. But all was now different; he saw nothing in detail, but only groups of things, whose shapes, not observed when there was something more of them to observe, were now unfamiliar. They seemed not to have been there before. A landscape that is all trees and undergrowth, moreover, lacks definition, is confused and without accentuated points upon which attention can gain a foothold. Add the gloom of a moonless night, and something more than great natural intelligence and a city education is required to preserve one's knowledge of direction. And that is how it occurred that Private Grayrock, after vigilantly watching the spaces in his front and then imprudently executing a circumspection of his whole dimly visible environment (silently walking around his tree to accomplish it) lost his bearings and seriously impaired his usefulness as a sentinel. Lost at his post—unable to say in which direction to look for an enemy's approach, and in which lay the sleeping camp for whose security he was account-
