Professor Hoffmann,
Modern Magic: A Practical Treatise on the Art of Conjuring
“ If you are using an ordinary table, the most effective mode of finishing the trick is as follows:—Walk boldly to the table, and pick up with the right hand (in which the card actually thought of is palmed) the card lying on the table, and, without looking at it yourself, hold it towards your audience, remarking, “Here it is, you see, the ace of spades.” The card being, in truth, a totally different one (say the seven of diamonds) , the audience naturally imagine that the trick has broken down, and a derisive murmur apprises you of the fact. ”
