240 BUEEAU OF AMERICAN ETHNOLOGY [bull. 57 



tion the student that the above explanation of the date 9.14.13.4.17 

 12 Caban 5 Kayab, or indeed any other for that matter, is in the 

 present state of our knowledge entirely a matter of conjecture. 



Passing on, it will be seen from Table XVII that two of the monu- 

 ments, namely, Stelse E and F, bear the date 9.15.0.0.0 4 Ahau 3 

 Yax, and two others. Stelae E and J, the date 9.15.5.0.0 10 Ahau 8 

 Chen, one hotun later. All four come together again, however, 

 with the date 9.15.6.14.6 6 Cimi 4 Tzec, which is recorded on each. 

 This date, like 9.14.13.4.17 12 Caban 5 Kayab, designates probably 

 another unportant event in Quirigua history, the nature of which, 

 however, again escapes us. After the date 9.15.6.14.6 6 Cimi 4 Tzec, 

 these monuments show no further correspondences, and we may pass 

 over the intervening time to their respective closing dates with but 

 scant notice, with the exception of Zoomorph G, which records a 

 half dozen dates in the hotun that it marks, 9.17.15.0.0 5 Ahau 3 

 Muan. (These latter are omitted from Table XVII.) 



This concludes the presentation of Initial-series, Secondary -series, 

 and Period-ending, datmg, with which the student should be suffi- 

 ciently familiar by this time to continue his researches independently. 



It was explained (see p. 76) that, when a Secondary-series date 

 could not be referred ultimately to either an Initial-series date 

 or a Period-ending date, its position in the Long Count could 

 not be determined with certainty, and furthermore that such a date 

 became merely one of the 18,980 dates of the Calendar Round and 

 could be fixed only within a period of 52 years. A few examples of 

 Calendar-round dating are given in figure 83 and plate 25. In 

 figure 83, A, is shown a part of the inscription on Altar M at Quirigua.^ 

 In Al Bl appears a number consisting of kins, 2 uinals, and 3 tuns, 

 that is, 3.2.0, and following this in A2b B2, the date 4 Ahau 13 Yax, 

 and in A3b B3 the date 6 Ahau 18 Zac. Compare the month glyphs 

 in B2 and B3 with q and r, and s and t, respectively, of figure 19. 

 This has every appearance of being a Secondary Series, one of the 

 two dates being the starting point of the number 3.2.0, and the 

 other its terminal date. Reducing 3.2.0 to units of the first order, 

 we have : 



Bl =3X360 = 1, 080 

 A1=2X 20= 40 

 Al=OX 1= 



1, 120 



Counting this number forward from 4 Ahau 13 Yax, the nearest date 

 to it in the text, the terminal date reached will be found to be 6 Ahau 

 18 Zac, the date wliich, we have seen, was recorded in A3b B3. It 



1 For the full text of this inscription, see Maudslay, 1889-1902: n, pi. 50. 



