MORLEY] INTKODUCTION TO STUDY OF MAYA HIEKOGLYPHS 233 



able is that the sculpture on Altar S very closely resembles the 

 sculpture on Stelae A and B at Copan, both of which date from 

 9.15.0.0.0 4 Ahau 13 Yax. A possible explanation of the record of 

 Cycle 10 on this monument is the following: On the date of this 

 monument, 9.15.0.0.0 4 Ahau 13 Yax, just three-fourths of Cycle 9 

 had elapsed. This important fact would hardly have escaped the 

 attention of the old astronomer-priests, and they may have used this 

 mommient to point out that only a quarter cycle, 5 katuns, was left 

 in Cycle 9. This concludes the discussion of Cycle-10 Period-ending 

 dates. 



The student will note in the preceding example (fig. 81) that 

 Initial-series, Secondary-series, and Period-ending dating have all 

 been used together in the same text, glyplis 1-4 recording an Initial- 

 series date, glyphs 6a and 7, a Secondary-series date, and glyphs 7 

 and 8a, a Period-ending date. This practice is not at all unusual in 

 the inscriptions and several texts illustrating it are figured below. 



Texts Recording Initial Series, Secondary Series, and Period 



Endings 



In plate 23 is shown the inscription on Stela 3 at Piedras Negras. 

 The introducing glyph appears in Al and is followed by the Initial- 

 series number 9.12.2.0.16 in B1-B3. This number reduced to units 

 of the first order and counted forward from its starting point will 

 be found to reach the terminal date 5 Cib 14 Yaxkin, which the student 

 will readily recognize in A4-B7; the "month-sign indicator" appear- 

 ing very clearly in A7, with the coefficient 9 affixed to it. Compare 

 the day sign in A4 with figure 16, 2, and the month sign in B7 with 

 figure 19, Ic, I. The Initial Series recorded in A1-A4, B7 reads, there- 

 fore, 9.12.2.0.16 5 Cib 14 Yaxkin. In Cl Dl is recorded the number 

 kins, 10 uinals, and 12 tuns; that is, 12.10.0, the first of several 

 Secondary Series in this text. Reducing this to units of the first 

 order and counting it forward from the terminal date of the Initial 

 Series, 5 Cib 14 Yaxkin, the terminal date of the Secondary Series 

 wiU fee found to be T Cib 14 Kankin, which the student will fuid 

 recorded in C2b D2a. The Initial-series value of this latter date 

 may be calculated as follows: 



9.12 2. 0.16 6 Cib 14 Yaxkin 



12.10. 

 9.12.14.10.16 1 Cib 14 Kankin 



Following along the text, the next Secondary-series number appears 

 in D4-C5a and consists of 10 kins,^ 11 uinals, 1 tun, and 1 katun; that 



• The usual positions of the uinal and kin coefficients in D4a are reversed, the kin coefficient 10 standing 

 ahow the uinal sign instead of at the left of it. The calculations show, however, that 10, not 11, is the kin 

 coefficient. 



