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Wilson came to the rescue, and smoothed things down as well as he could; and in fact was entirely successful as far as the twins were concerned, for they felt sorrier for the affront put upon him by his guest's outburst of ill manners than for the insult offered to Luigi. But the success was not so pronounced with the offender. Tom tried to seem at his ease, and he went through the motions fairly well, but at bottom he felt resentful toward all the three witnesses of his exhibition; in fact, he felt so annoyed at them for having witnessed it and noticed it that he almost forgot to feel annoyed at himself for placing it before them. However, something presently happened which made him almost comfortable, and brought him nearly back to a state of charity and friendliness. This was a little spat between the twins; not much of a spat, but still a spat; and before they got far with it they were in a decided condition of irritation with each other. Tom was charmed; so pleased, indeed, that he cautiously did what he could to increase the irritation while pretending to be actuated by more respectable motives. By his help the fire got warmed up to the blazing-point, and he might have had the happiness of seeing the flames show up, in another moment, but for the interruption of a knock on the door--an interruption which fretted him as much as it gratified Wilson. Wilson opened the door.