INSCRIPTIONS OF THE GREAT PERIOD. 303 
logical, but also the only one which develops a significant chronological 
relationship with other dates present in this text.. The writer believes that 
the katun coefficient is recorded above and is 1, since 10, the only other 
value possible, represents too long a stretch of time to have been recorded 
upon a monument all of whose dates save one are within a few years of each 
other, the odd date being 6 Caban 10 Mol. Although the number above 
the katun-sign is completely effaced, we have seen that it was under 6. 
If used as 1, however, there is developed a significant relationship with the 
other dates recorded, a relationship, moreover, which does not follow if the 
katun coefficient is used as either 2, 3, 4, or 5. Finally, unless the kin 
coefficient is 10 and the two intermediate coefficients both o, the Maya 
themselves must have been at loss to read such an abbreviated number 
correctly. Now, if the number above be regarded as the coefficient of the 
highest period present (7. ¢., the katun), and the number to the left as the 
coefficient of the lowest period present (7. ¢., the kin), it should be noted 
that the regular order in the overwhelming majority of all Maya Secondary 
Series numbers will have been followed, and no confusion could have arisen 
in the minds of the inhabitants of the city as to the number recorded in 11. 
If this is correct, then 11 may be deciphered as I.0.0.10, and by its position 
in the inscription, 1.¢., immediately preceding 6 Caban to Mol in ki, 11, 
it is probable that this number is to be counted forward from some date to 
reach 6 Caban 10 Mol. 
This starting-point can be shown by calculation to be 11 Manik o Mac, 
and since the Initial Series of 6 Caban 10 Mol has been assumed to be 
9.16.12.5.17, the Initial Series of the unexpressed starting-point, 11 Manik 
o Mac, can also be established by calculation, as follows: 
9.16.12. 5.17. 6 Caban 1o Mol 
I. 0.0.10 backward 
9.15.52. 5.7 11. Mamko Mac 
And here lies the significant connection above noted. This latter date, 
9.15.12.5.7 11 Manik 0 Mac, the starting-point of the Secondary Series num- 
ber in 11, although not recorded, is just 10 days earlier than the date (also 
not recorded) reached by counting the first Secondary Series number 2.13.0 
in A2 forward from the first date, 3 Caban o Pop, in a1, B1. In other words, 
the record overlaps 1o days here. 
AI, BI 9.15. 9.10.17. 3 Cabano Pop 
A2 B13 2,0 
Not recorded 9.15.12. 5.17. 8 Caban 10 Mac 
Moreover, in further confirmation of this reading, we will find a date 
just 7 days earlier than 9.15.12.5.7 11 Manik o Mac farther on. While 
these readings require some restorations in the original, they develop such 
interesting relations that their accuracy is rendered extremely probable. 
The next date is at Ls, M1 and is perfectly clear (except the month coef- 
ficient) as 9 Ik? Mol. When at Copan in 1912 the writer gave this month 
coefficient a close examination. It was evident that it had to be either 
