reference to Cauac, the question of
doubt being with regard to the Ahau, which is partially surrounded by
other characters and may, apparently, be as correctly considered a part
of the hieroglyphic inscription as of the day column.

Counting on the list of days in the calendar (Table II), as, for example,
the Muluc column, we find the interval from Muluc to Ix is 5 days, from
Ix to Cauac is 5 days, and from Cauac to Kan 5 days; but the interval
from Ahau to Muluc is 9 days. From this fact we may reasonably infer that
Ahau does not belong to the column. Moreover, the other 4 days are the
four year bearers, and when they occur together the column usually
consists of but 4 days, as, for example, in the lowest division of Plate
29 of this codex and Plate XXXII* of the Manuscript Troano. The numerals
are 20; XIII, X; 20, XII, III; the number over the day column, as before
stated, is wanting. The interval from 1 Muluc (or 2 or 3 Muluc) to Ix of
the same number is 65 days. It is evident, therefore, that one of each
pair of red numerals of the series given must be a counter and has been
colored red by mistake. As the numbers in the last pair are III and XII,
the number over the column must be 3 or 12. Suppose it is 12 and that
XIII of the first pair is a counter, then XII + 20 + 13 - 13 - 13 - 13 =
VI. As the number in the series is X this will not do. Supposing the X of
the first pair of red numerals to be the counter, colored by mistake, the
result is as follows: XII + 20 + 10 - 13 - 13 - 13 = III. This is also
wrong, as the remainder should be XIII. Supposing the number over the
column to be III and the XIII of the first pair and XII of the second to
be the counters, the result agrees with the theory in every particular.
Thus, III + 20 + 13 - 13 - 13 = X; X + 20 + 12 - 13 - 13 - 13 = III; and
20 + 13 + 20 + 12 = 65, the interval between 3 Muluc and 3 Ix. In
Foerstemann's copy the XIII and XII are black, thus verifying the
conclusion here reached.

The series running through Plates 10_c_ and 11_c_ presents some
difficulties which I have, so far, been unable to solve. The day columns
and numerals are as follows:

I XIII
Ymix Cimi }
Been Ezanab } 1, I; 5, VI; 10, III; 13, III; 15, V; 9 (?), XIII.
Chicchan Oc }
Caban Ik
Muluc Ix[290-1]

The numerals in this case are very distinct, especially in the
photographic copy, and there can be no doubt as to the days. Here the