I have a copy of this, reprinted in 1940s sandwiched into another work by MacDougall. Lots of fun for a bored child. I still shuffle cards in the rather striking way he describes:
Cut the deck perfectly in half. This is easier than it sounds.
Pincer the halves at the end, and push the two other ends together.
Push harder, smoothly, and rotate your wrists opposite slightly. The two halves will fan into each other. With practice you can perform 2 (4?) perfect shuffles and end up with the cards in the same order you started in.
Cut the deck perfectly in half. This is easier than it sounds.
Pincer the halves at the end, and push the two other ends together.
Push harder, smoothly, and rotate your wrists opposite slightly. The two halves will fan into each other. With practice you can perform 2 (4?) perfect shuffles and end up with the cards in the same order you started in.