The Magic Squares Shown Afford Much Interest to the Experimenter in Such Devices: The Mastery of the Principle Underlying Some of Them will Enable One to Mystify and Interest Onlookers, with Little Chance of the Simple Method being Discovered
Although they do not contain quite so many combinations, the three magic squares shown at [G] all add up to this same magic number of 65, straight across, diagonally, and many other ways. A square with seven numbers to the side, worked out according to the first method described, is illustrated at [H]. The magic number here is 175. Since the general principle is similar to that involved in the squares described in detail, the working out of the numerous combinations of the squares shown at G and H will be left to the interested experimenter.
Muffling the Ticking of a Watch or Clock
When a watch is used on a table in the sick room, the ticking may be eliminated by placing an ordinary tumbler over the watch. The face may be seen readily. A large glass vessel, or transparent jar, may be used in the same way to cover a small clock.—L. E. Turner, Jamaica, N. Y.
¶To letter on prepared cloth, use colors ground in japan and thin the mixture with gasoline to the consistency of cream.
A Simple Cipher Code
Adapted for Use in Private Correspondence
By CAPT. W. H. WALDRON, U. S. Army
Have you ever needed a secret code in which to couch the contents of a message intended for the eyes of one person alone? If you have, you will remember the difficulties that were experienced in making up the code and enciphering your letter. Here is a cipher code that may be mastered in a few minutes; one that is most difficult to decipher by any person other than those having the key words, and that is very simple when once understood.
| G | R | A | N | T |
| F | IJ | E | L | D |
Fig. 1
| G | R | A | N | T |
| B | C | H | K | M |
| F | IJ | E | L | D |
| O | P | Q | S | U |
| V | W | X | Y | Z |