the four day series, including the
day indicated by the date--4 months, 10 days. This will be understood by
examining our calendar (Table II). The corresponding days in the four
year columns were, by the Maya system, necessarily brought together in
the calendar; for example, they are arranged in the series pictured on
Plates 13-18 of the Cortesian Codex precisely as given in our Table II.
This skip of five days is also apparent in the second and fourth columns
of differences (Table V). Whether Dr. Foerstemann is correct in all his
identifications of months among the symbols on the five plates now under
consideration is a question I feel unqualified to answer without a much
more careful comparison and study of these characters than I have given
them.

Running through the upper division of Plates 53 to 58 and continued
through the lower division of Plates 51 to 58--that is to say, commencing
in the upper division of 53 and running into 58, then back to the lower
division of 51 and ending in 58--is a remarkable compound series. It
consists, first, of a three line series of black numerals standing above;
second, a middle series of short, three day columns, or columns each of
three day symbols, with red numerals attached; and, third, below, a two
line series of numerals, those of the upper line red and of the lower
black numbers.

As this series is a very important one in the study of the relations of
the numerals to one another and to the days indicated, an exact copy of
it is given in Figs. 363-370, each figure representing a page and the
whole standing in the same order as in the original. The red numerals and
red symbols are, as usual, given in outline as an indication of their
color.

[Illustration: FIG. 363. Copy of Plate 51, Dresden Codex.]

[Illustration: FIG. 364. Copy of Plate 52, Dresden Codex.]

[Illustration: FIG. 365. Copy of Plate 55, Dresden Codex.]

[Illustration: FIG. 366. Copy of Plate 54, Dresden Codex.]

[Illustration: FIG. 367. Copy of Plate 55, Dresden Codex.]

[Illustration: FIG. 368. Copy of Plate 56, Dresden Codex.]

[Illustration: FIG. 369. Copy of Plate 57, Dresden Codex.]

[Illustration: FIG. 370. Copy of Plate 58, Dresden Codex.]

In order to assist those not familiar with the numeral and day symbols,
the entire series is given in the following tables in names and Arabic
and Roman numerals, as usual. The obliterated symbols and numbers are
restored.

TABLE VI.--_Table of numeral a