This series begins in the middle of page 73 with the day IV Caban, the
zero-point therefore being IV Eb. It then advances to the left across 28
members, until on page 71 it reaches the number 1820 = 5 years of 364 days
= 7 Tonalamatls. From there on, 1820 itself is the difference, and the
accompanying day therefore remains IV Eb. Then, in the two lowest sections
of pages 71 and 70, the fourth multiple of 1820, _i.e._, 7280, is the third
difference and thus the series advances to 15 × 7280 = 109,200 on page 71,
after which on page 70 the omitted 8 × 7280 = 58,240 is written out. Close
beside this number are the figures 1. 0. 12. 3. and a 0 below the latter,
which was not successfully erased; this would be the number 7443 of which I
can make nothing at all.
The initial dates of the two series, IX Ix and IV Eb, are 138 days apart
and reversely 122 days.