FOR this trick it is best to use a new pack of Bicycle cards, preferably of the air-cushion finish, with white border. Sort out the black and the red cards. Place a red card and a black card back to back and continue this arrangement with all of the cards, so that all the black cards are face upwards and the red cards face downwards. Show the pack fanned, it will appear to consist of all black cards, the backs of the red cards will not show, partly owing to the white borders and partly because the backs tend to stick together and do not slip as perfectly as the face surfaces. Square the pack, covering the cards with the right hand and holding the face card only with it. Now drop the left hand about an inch carrying with it the rest of the cards, and. slip the tip of the left thumb under the outer side of the pack and rapidly turn it over sideways. Take off the face card with the right hand, blow on it and put it on the bottom. Again spread the pack, this time the red cards only will show.