In a few moments, Alfred Inglethorp had ushered the doctor in, the latter laughing, and protesting that he was in no fit state for a drawing-room. 
Alfred Inglethorp was mad because the doctor laughed at him
mnli hypothesis: Alfred Inglethorp was mad because the doctor laughed at him premise: In a few moments, Alfred Inglethorp had ushered the doctor in, the latter laughing, and protesting that he was in no fit state for a drawing-room. 