?' 'Well'--he held out an envelope--'if I hadn't found this letter awaiting me telling me of the old man's death, I should have accused myself of softening of the brain, or something of the kind. As it is, I believe I've had a vision.' 'A vision! You? Guy, fancy your discovering that there are visions about.' 'You're laughing at me now.' 'I'm doing nothing of the kind. Ho