'My dear doctor,' said he kindly, 'pray accept my apologies. Viewing the matter as an abstract problem, I had forgotten how personal and painful a thing it might be to you. I assure you, however, that I never even knew that you had a brother until you handed me the watch.'
'Then how in the name of all that is wonderful did you get these facts? They are absolutely correct in every particular.'
'Ah, that is good luck. I could only say what was the balance of probability. I did not at all expect to be so accurate.'
'But it was not mere guess-work?'
'No, no: I never guess. It is a shocking habit—destructive to the logical faculty. What seems strange to you is only so because you do not follow my train of thought or observe the small facts upon which large inferences may depend. For example, I began by stating that your
