The only real objection I can see to my explanation of the arrangement of the days in this circle is the fact that it necessitates the transposition of two characters, but it is not unreasonable to suppose that the artist may have made this one mistake. Fortunately we find on Plates 18 and 19 of the Codex Peresianus[1][TN-7] what appears to be a complete confirmation of the theory here advanced. This is a kind of tabular arrangement of certain days, with accompanying numbers, as shown in our Fig. 3, which is an exact copy of those portions of Plates 18 and 19 of the Codex Peresianus, to which I refer. I also give in Table V the names of the days and the numbers corresponding with the symbols and characters of Fig. 3. In this table the erased days and obliterated numerals are restored, these being in italics to distinguish them from those on the plate. TABLE V. _10. Kan._ 8. Cib. 6. Lamat. 4. Ahau. 2. Eb. _10. Lamat._ 8. Ahau. 6. Eb. 4. Kan. 2. Cib. _10. Eb._ 8. Kan. 6. Cib. 4. Lamat. 2. Ahau. _10. Cib._ 8. Lamat. 6. Ahau. 4. Eb. 2. Kan. _10. Ahau._ 8. Eb. 6. Kan. 4. Cib. 2. Lamat. 13. _Kan._ _11. Cib._ 9. Lamat. 7. Ahau. 5. Eb. 13. _Lamat._ _11. Ahau._ 9. Eb. 7. Kan. 5. Cib. 13. _Eb._ _11. Kan._ 9. Cib. 7. Lamat. 5. Ahau. 13. _Cib._ _11. Lamat._ 9. Ahau. 7. Eb. 5. Kan. 13. _Ahau._ _11. Eb._ 9. Kan. 7. Cib. 5. Lamat. 3. Kan. 1. _Cib._ _12. Lamat._ 3. Lamat. 1. _Ahau._ _12. Eb._ 3. Eb. 1. _Kan._ _12. Cib._ 3. Cib. 1. _Lamat._ _12. Ahau._ 3. Ahau. 1. _Eb._ _12. Kan._ An inspection of this table shows us that the five days repeated in each column are the same as those on the right of the quadrilateral of our scheme (Fig. 2), and are exactly in the order obtained by arranging the days of the month in four columns in the manner heretofore shown. (See column 4, Table IV.) If I am correct in my supposition, we then have one clue to, if not a full explanation of, the method of obtaining the day columns in the Manuscript Troano. [Illustration: FIG. 3.--Copy from Plates 18 and 19, Codex Peresianus.]