...that he had heard boots and saddles sounded, and to warn his dear old general of the danger. The mystery of the aurora borealis was solved; for right around his home he had come upon the bivouac of Dahlgren 's troopers. When he was arousing the family, the enemy was coming on the same road, and not more than three or four miles behind him. The news chilled every heart with the sense of imminent peril, ...