THE EXPLOSION.ARNOLD’S mind was far from easy when he was left by himself again in the smoking-room. After wasting some time in vainly trying to guess at the source from which Lady Lundie had derived her information, he put on his hat, and took the direction which led to Blanche’s favorite walk at Ham Farm. Without absolutely distrusting her ladyship’s discretion, the idea had occurred to him that he would do well to join his wife and her step-mother. By making a third at the interview between them, he might prevent the conversation from assuming a perilously confidential turn. The search for the ladies proved useless. They had not taken the direction in which he supposed them to have gone. He returned to the smoking-room, and composed himself to wait for events as patiently as he might