From “A Visit to My Discontented Cousin,” to be published by Robert Bros.
The Cipher Correspondence
The story I am about to tell relates to an incident in the history of England which is but little known, and which you will not find in books, but one which, nevertheless, had a great effect on her destinies.
About the beginning of this century, while the revolutionary wars were raging, communication in cipher was naturally very prevalent; and ingenuity was taxed to the utmost, one hand to invent, and on the other to detect, the medium used in secret correspondence. As a rule the decipherer had beaten the cipherer; and no known method was secure of detection. If conventional signs merely were used, the recurrence of the different symbols gave a key easily followed out. Some ingenious spirits corresponded by reference to the pages and lines of particular editions of particular books; others by an agreed-on vocabulary. But these last methods, although they might preserve the secret, disclosed, what was often quite as dangerous, that there was a secret. I am about to tell you of a plan which for long years was not only undetected, but unsuspected.… Read More