During the work hours he labored with uneasy haste, attempting, as the day bore toward the sultry Mississippi sunset, to tire himself physically so that in the evening he might sleep deeply from utter exhaustion.... Then one afternoon in the second week he had a feeling that two eyes were watching him from a place a few feet beyond one of the guards. This aroused him to a sort of terror. He turned his back on the eyes and shovelled feverishly, until it became necessary for him to face about and go for more gravel. Then they entered his vision again, and his already taut nerves tightened up to the breaking-point. The eyes were leering at him.