THOMAS] NUMERAL SYMBOLS IN THE CODICES $13 
example, on plates 61 and 69. These, which have been heretofore 
alluded to, are precisely of the form found in the inscriptions. The 
series as given on plate 69 is 15 katuns, 9 ahaus, 4 chuens, 4 days, the 
days having a special symbol not joined to that of the chuens. The 
preceding date is 4 Ahau 8 Cumhu, and that which follows 9 Kan 12 
Kayab. The reckoning in this case reaches, as has been shown, the 
day and day number (9 Kan), but the 7th day of Cumhu instead of the 
12th of Kayab. Nevertheless, there can be no question that this is a 
series precisely after the form of those given in the inscriptions. 
In these two series are also seen the ahau and chuen symbols of the 
usual forms, the days, as has been stated, usually having a separate 
symbol, generally the so-called kin symbol, as the lower character in 
the symbol of the month Yaxkin. 
The ordinary numerals found at the side or top of these symbols are 
frequently replaced by one or more little ball or cup-shape characters, 
such as are shown in figure 21. Others of like form attached to other 
period symbols are shown at A3, B3, and A4, figure 16. In the latter, 
ordinary numerals are also present. The first (figure 21) is from the 
upper division of plate 73, and the others are from plate 69. 
Are these characters numerals? If so, what is the value 
of each? As they can not together represent in any 
instance more than 20, and as many as three are found in 
some instances attached to one symbol, it is evident that, ae ao 
if they are number characters, each must indicate 1, 2,  piate 73, 
3, 4,5, or 6, not more. As the latter three have also Rery co 
ordinary numerals attached, but odd numbers, it may be i 
inferred that the value is 2, 4, or 6. There is, however, other evidence 
bearing on this question, which is seen in the symbol shown at A3, 
figure 16. This is certainly the equivalent of the **calendar round” 
symbol of the inscriptions, and as the largest number of full calendar 
rounds in the time series immediately below is 5, the value of each 
of these little characters would seem to be 2. As a chuen symbol 

in the same connection is followed by the symbol for day in the 
abstract sense, each having these little characters attached, the evi- 
dence in favor of the theory that they are numerals is very strong. 
In the middle of the lower half of plate 70 a katun symbol is followed 
by an ahau symbol, each having these little characters attached with- 
out other numerals. So far, however, I have been unable to connect 
dates by means of these counters, if they be such; but this is not 
decisive, as there are not sufficient recognized data in any case for a 
fair test. 
On plate 71, second column, near the top, is a face glyph used as 
an ahau symbol; as positive proof that it is such, it has inserted in it 
a small ahau symbol of the usual type. There are several other 
characters in this codex which appear to be used as number symbols, 
