Finding that Holmes was too absorbed for conversation I had tossed aside the barren paper, and leaning back in my chair I fell into a brown study. Suddenly my companion's voice broke in upon my thoughts:
"You are right, Watson," said he. "It does seem a most preposterous way of settling a dispute."
"Most preposterous!" I exclaimed, and then suddenly realizing how he had echoed the inmost thought of my soul, I sat up in my chair and stared at him in blank amazement.
"What is this, Holmes?" I cried. "This is beyond anything which I could have imagined."
He laughed heartily at my perplexity.
"You remember," said he, "that some little time ago when I read you the passage in one of Poe's sketches in which a close reasoner follows the unspoken thoughts of his companion, you were inclined to treat the matter as a mere tour-de-force of the author. On my remarking that I was constantly in the habit of doing the same thing you expressed incredulity."