| 8| 19|
|Akbal | 7| 1| 8| 2| 9| 3|10| 4|11| 5|12| 6|13| 7| 1| 8| 2| 9| 20|
|----------------------------------------------------------------+--+---|
| _Intercalated days._ | | |
|Kan |10| |
|Chicchan |11| |
|Cimi |12| |
|Manik |13| |
|Lamat | 1| |
-----------------------------------------------------------------------

Each of these eighteen columns forms one month, and the whole taken
together, with the 5 days added at the end of the eighteenth month, form
one continuous series, the second column following the first as though
placed at the end of it, the third following the second, and so on to the
end of the eighteenth. Whether or not it was the ancient custom to
include the 5 added days in the year, as asserted by the old Spanish
writers, is somewhat doubtful, at least in studying the Dresden Codex, we
shall find but few occasions, if any, to use them, for there are few if
any positive indications in this codex that they were added.

As stated, each column of the table forms a month, though the numbering
is carried to thirteen only; but at present the chief object in view in
presenting it is to use it in explaining the method of counting the days
and the intervals of time. The table is in truth a continuous series, and
it is to be understood as though the 365 days were written in one column,
thus:

1. Kan.
2. Chicchan.
3. Cimi.
4. Manik.
5. Lamat.
6. Muluc.
7. Oc.
8. Chuen.
9. Eb.
10. Been.
11. Ix.
12. Men.
13. Cib.
1. Caban.
2. Ezanab, &c.,

the 20 days being repeated over and over in the order in which they stand
in the table. This order is never changed; we may commence at whatever
point in the series occasion may require, but the order here given must
always be maintained, just as in our calendar the order of our days is
always Sunday, Monday, Tuesday, &c. In other words, Chicchan must always
follow Kan, Cimi must always follow Chicchan, &c.

The method of counting intervals in the Maya calendar is very simple, if
these explanations are borne in mind, and may be illustrated thus:
Counting 14