Lamat. II Cib.

_Plate_ 50:
XII Eb. XI Ik. I Eb. IX Ahau.
* * * * * * * *
IV Eb. III Ik. VI Eb. I Ahau.

A careful examination of these groups will bring to light the following
relations of the numbers, days, columns, and series to one another:

The numerals of any one column, counting downwards, differ from one
another by 8; that is to say, by adding 8 to any one and casting out 13
when the sum exceeds that number, the next lower number will be obtained;
or, reversing the operation and counting upward, the difference is found
to be 5. The true interval between the days of the columns (counting
downwards) is 3 months (60 days), a rule which holds good as to all the
series and each column. Thus, from 3 Cib to 11 Cib is 3 months, or 60
days; from 11 Cib to 6 Cib, 3 months; from 2 Cimi to 10 Cimi, 3 months,
and from 13 Kan to 8 Kan, 3 months.

Counting on the list of the days of the month, without reference to the
week numbers attached to them, it will be found that from Cib to Cimi is
an interval of 10 days, and from Cib to Kan is an interval of 8 days.
This rule holds good as to all the series, showing that all are arranged
upon precisely the same plan. The true interval between any day of the
first column of either series (the week number attached being considered)
and the opposite or corresponding day in the second column, is 4 months
and 10 days, that between the corresponding days of the second and third
columns is 12 months and 10 days, that between the days of the third and
fourth columns is 8 days, and that between the corresponding days of the
fourth or last column of one series or plate and the first column of the
following series or plate (taking the plates in the order they are paged)
is 11 months and 16 days.

In order to illustrate this we will run through the lowest line of each
series, taking them in the order of the pages.[296-1]

These are as follows:

_Plate_ 46: VIII Cib. VII Cimi. X Cib. V Kan.

_Plate_ 47: VII Ahau. VI Oc. IX Ahau. IV Lamat.

_Plate_ 48: VI Kan. V Ix. VIII Kan. III Eb.

_Plate_ 49: V Lamat. IV Ezanab. VII Lamat. II Cib.

_Plate_ 50: IV Eb. III Ik. VI Eb. I Ahau.

[Illustration: FIG 362. Copy of Plate 50, Dresden Codex.[TN-5]]

By counting on the calendar (