Then take a sentence five times the length in letters of “All is well,”—say it is, “We were sorry to have heard that you have been so unwell.”
Then fit this sentence to the cipher shown above, like this—
| a | a | a | a | a | a | b | a | b | a | a | b | a | b | a | a | b | a | a | a | b | a | a | a | b | b | a | b | a |
| W | e | w | e | r | e | s | o | r | r | y | t | o | h | a | v | e | h | e | a | r | d | t | h | a | t | y | o | u |
| a | a | a | b | a | a | a | b | a | b | a | a | b | a | b | a. | |||||||||||||
| h | a | v | e | b | e | e | n | s | o | u | n | w | e | l | l. | |||||||||||||
Marking with a dash every letter that comes under a B. Then put the sentence down on your paper, printing all marked letters in italics, and the others in the ordinary way, thus—
“We were sorry to have heard that you have been so unwell.”
The person who receives the cipher puts it down and writes an A under every letter except those in italics; these he puts a B under; he then divides the cipher obtained into periods of five letters, looks at his alphabet, and finds the meaning to be, “All is well.”
Here is a specimen of a music cryptograph:—
The next is good, but rather lengthy:—