there is placed at first one initial Transpositive letter by the side of the aforementioned first Station, while the succeeding Transpositive letters appear, in a somewhat smaller form, in a middle position, as it were, and at some distance from the lines of the Columns, over against the Stations that have two letters only.  Finally, inasmuch as, in the said Major Order of the General alphabet, the Particular alphabets occur twenty four times, hence, in each Order of the Particular alphabet, there are found, affixed at the side and next the line, the like number of Transpositive letters in small form, -- beginning in the first case at the aforementioned initial letter of the Maximum Order, and, after that, starting each time at the presiding letter of the Major Order, and continuing through twenty-four Stations.  Of these letters which are written at the side, the one in capital form is used for transposing the first letter of the secret, while that which projects opposite the single Station containing two letters, is used for the second letter; the letters which stand individually in closest proximity to the Stations serve for the Transposition of the third letter of the secret.  Such the is the general rule.  It sometimes happens, however, that the three Transpositive letters represent a single letter of the secret or two such letters, as is the case at the end of words.  It is for this reason that not only is the Transpositive letter of the third class, notwithstanding its class, placed against the presiding letter of the Major Order, but this same letter combined with the letter of the second, or middle, class, is placed against the initial letter of the Maximum Order.  For the rest, as respects the Numbers which are found written outside, above the Columns, and at the right hand of the Positions, or Stations, I will reserve the explanation of these for the Sixth Book, which follows.

The preceding remarks being thoroughly understood, this praxis in writing, and in reading what is written, cannot be difficult.  Thus, if the sentence Imperator Ferdinandus Pragam ingreditur comes up for Transposition, first look for the first three letters in the Universal letter, I, under the Station of the two letters IM, running your eye along until you come to the Station or Position, which contains these three letters, IMP.  In the same way, look for the next three letters, ERA, in the Universal letter, E, running your eye along until you come to the Station, or Position, containing these three letters.  Continue thus with the following letters, TOR, also with FER, with DIN, with AND: with USP: with RAG: with AMI: with NGR: with EDI: and, finally with TUR.  And be not alarmed by the fact that there is occasion here to join the letters of two words.  For it cannot be otherwise if you have set out with the intention of providing your writing, for the purpose of greater deception, with an unbroken thread, wherein there is no division of words.  The Positions, or Stations, being thus found, put yourself in readiness to effect the Transposition; and since to the Universal letter I corresponds the Transpositive letter H, and to the middle letter M the General letter M, and to the third letter P the Particular letter D, these letters, HmD, must be written.  In the same way, it will be found that for ERA must be written BCD.  Whence will result the following Transposition of this secret:

Hmdbodsnzydigdzizcpghzpzmpdardbeksso.