is contained in a number of squares and spaces, in which the letters of the alphabet, itself varied twenty one times, are found arranged, for the purposes of writing, in various combinations of two letters.  The middle alphabet is that which stands in capital letters between the interior and exterior alphabets, both horizontally, and at the left perpendicularly, and serves to present by Transposition two letters of the secret.  The exterior alphabet is likewise at the top and the left hand side, encircling the table externally, and is provided simply to facilitate the reading, by making it possible for the reader more easily to find the space of the transposed letters.

The praxis learn as follows:  The secret must always be broken up into groups of two letters: simply, as: Cr as ex pe ct ab is ad ve nt um me um;  or by dividing the letters of the secret into two equal orders (such that the letters Cras expectabi: constitute the first, and the other letters, s adventum meum: the second order), and then so combining the letters that C, taken from the first order, and S, taken from the second order, are united in the following fashion: Cs ra ad su ee xn pt eu cm tm ae bu im: or by joining to the secret other words, or words likewise having a secret sense, as these that follow: Hodie venit ad me ille quem nostif:   If these letters do not equal in number the letters of the secret, let them be repeated as often as necessary; whence will result, for the Transposition of all words of the secret, the following form:  Ch ro ad si ee xu pe en ci tt aa bd im se ai dl ul ee nq ru ue mm mn eo us mt.  The combination of letters being thus made, take Cr, or Cs or Ch (for present purposes, it makes no difference which resolution of letters you have used), and, --to illustrate first with Cr, -- look, in the table, in the horizontal middle alphabet, written at the top, for the letter C, and in the perpendicular alphabet, for the letter R.  When these places have been found, these two letters show, by the perpendicular and horizontal lines, the square, -- called the common angle or angle of union, --  or place, in which the two Transpositive letters lurk, and from which they are to be taken wherewith to write.  And in the same way must we proceed with the other letters, and there will then appear, by the principle of the first resolution the following form:  Zzxufbzmbzeugfguermimrthmr.  It is, however, not necessary always to begin with the letters at the top, but we may also, if we wish, start with those at the side.  If , for example, the second resolution of letters is to be transposed, take first the letter C in the perpendicular line, and then S in the horizontal line, and these show, in the angle of union, the Transpositive letters Ap.  If you continue to transpose thus, you will have the following form:  Apuugasrnboioqerrhlhhbbrah.  One may also, thirdly, begin with the horizontal, or top, letter, and take the second letter from the line of perpendicular letters, but, in writing, by agreement of the parties, place the second letter of the square first, and, next it, in the second position, the first letter.  If this process be followed, the secret words of the third resolution are presented by the following combinations:  Zoolugpgbnsxmzbuzpqsudxhfapcunarrlbnihqtrehchdbxrshl.  The one who receives the form written by this method, will also, doubtless, interpret the transposed writing by applying the table.  The spaces, or squares, of the transposed letters, however, do not at first sight,