The Magician's Own Book, or, the Whole Art of Conjuring / Being a complete hand-book of parlor magic, and containing over one thousand optical, chemical, mechanical, magnetical, and magical experiments, amusing transmutations, astonishing sleights and subtleties, celebrated card deceptions, ingenious tricks with numbers, curious and entertaining puzzles, together with all the most noted tricks of modern performers.

by George Arnold; Frank Cahill

EXAMPLE.

1. Add 1 to it	7
2. Multiply by 3	21
3. Add 1 again	22
4. Add the number thought of	28

Let him tell you the figures produced (28):

5. You then subtract 4 from it	24
6. And divide by 4	6

Which you can say is the number thought of.

Sixth Method.

EXAMPLE.

Suppose the number thought of	6
1. Let him double it	12
2. Desire him to add to this any number you tell him, say 4	16
3. To halve it	8

You can then tell him that if he will subtract from this the number he thought of, the remainder will be, in the case supposed, 2.