a on the Classifier. You will see that this letter also belongs to the a form. If you will do the same to the rest of the letters of this first group you will find that they are all a form letters. Now what letter of the Alphabet does a group of five a’s stand for?—A, does it not? So the first letter in our secret is A. Now place the Classifier over the rest of the letters of the poem and see to what form they belong, just as we have done for you in the first group. If you do your work carefully you will find the hidden secret.

If we can hide one word in “Biliteral Cipher” and a sentence in a short poem, do you not see how a whole story could be hidden so carefully within a book that it might not be discovered for many, many years?

PLATE I