Steganography: The Art of Secret Writing

OF STEGANOGRAPHY

[they] preside over the day, and how many substitutes each of them has, and so similarly concerning those of the night: so that you may know this perfectly, you shall consider the present table.

These abbreviations likely refer to ink colors (Schwarz/Rot) for the rubricator or scribe.

It seemed more correct to read Nosar.

Here in this table you have the ten angels of Camuel who preside over the day with the number of their substitutes, and just as many who preside over the night, also with their own servants. However, the last ones, as you see, have no substitute, because 0 Trithemius uses the numeral 'o' for zero, as you know, signifies nothing at all in number. Therefore, when you wish to work through these angels, prepare your paper as is the custom; and facing the East original: "Eurum," the southeast wind write any story you wish, and in whatever language you like, which does not need to be hidden: once it is finished, read the following conjuration conjuration (Latin: coniuratio); in this system, the "prayer" or "spell" is actually a set of instructions for the recipient to identify which cipher key to use silently.

Camuel aperoys, melym meuomanial, casmoyn eralti busaco aeli lumar photytion theor besamys, aneal Cabelonyr thiamo vesonthy.
This "conjuration" consists of "barbarous names"—words that sound like a magical language but function as the steganographic key.

Having completed this conjuration in silence, give your commission to the spirits who are present, just as you know; and send them forth, performing everything in silence and away from noise if possible. Afterwards, give the letter to whichever messenger you wish to carry it—open, if you like—and let him go, for the Spirits will not neglect their duty, whether the messenger arrives quickly or slowly. Have no doubt about this, for they are faithful. It is necessary, however, that you know which Spirit you wish to send from those mentioned above, so that in the conjuration you express his name immediately after the principal spirit, and do this in all operations where the names of the angels to be sent are placed in the chapter itself. But now let us provide an example original: "similitudinem," a likeness or demonstration of what we have said concerning those things which belong to the office of Camuel and his subject Spirits.