"How did the doctor know that we needed a picket?" "Ah donno, sah, Ah reckon he thought it was acco'din to military etiquette, sah. It am de custom in military camps to set a picket an' all presume he argued from dose premises, sah." "Then you did not tell him of what occurred the other night?" "No, sah, Ah didn't communicate nothing, sah. Mebbe it was one of de odah fellahs."