In plate 19, _A_, is figured the Initial Series from the west side of Stela F at Quirigua.[198] The introducing glyph appears in A1-B2 and is followed by the Initial-series number in A3-A5. This is expressed by head variants and reads as follows: 9.14.13.4.17. The terminal date reached by this number is 12 Caban 5 Kayab, which is recorded in B5-A6. The student will readily identify the numerals as above by comparing them with the forms in figures 51-53, and the day and month signs by comparing them with figures 16, _a', b'_, and 19, _d'-f'_, respectively. The Initial Series therefore reads 9.14.13.4.17 12 Caban 5 Kayab.[199] [Illustration: INITIAL SERIES (_A_) AND SECONDARY SERIES (_B_) ON STELA F (WEST SIDE), QUIRIGUA] {219} Passing over B6-A10, the meanings of which are unknown, we reach in B10 the Secondary-series number 13.9.9. Reducing this to units of the first order, we have: B10b = 13 × 360 = 4,680 B10a = 9 × 20 = 180 B10a = 9 × 1 = 9 ----- 4,869 Assuming that our starting point is the date next preceding this number in the text, that is, the Initial-series terminal date 12 Caban 5 Kayab in B5-A6, and applying rules 1, 2, and 3 (pp. 139, 140, and 141, respectively), the terminal day reached will be 6 Cimi 4 Tzec. This date the student will find recorded in plate 19, _B_, B11b-A12a. Compare B11b with the sign for Cimi in figure 16, _h, i_, and A12a with the sign for Tzec in figure 19, _g, h_. Moreover, since the Initial-series value of the starting point 12 Caban 5 Kayab is known, the Initial-series value of the terminal date 6 Cimi 4 Tzec may be calculated from it: 9.14.13. 4.17 12 Caban 5 Kayab 13. 9. 9 9.15. 6.14. 6 6 Cimi 4 Tzec[200] In A15 is recorded the date 3 Ahau 3 Mol (compare A15a with fig. 16, _k', i'_, and A15b with fig. 19, _m, n_) and in A17 the date 4 Ahau 13 Yax (compare A17a with fig. 16, _e'-g'_ and A17b with fig. 19, _q, r_). This latter date, 4 Ahau 13 Yax, is recorded elsewhere at Quirigua in a Secondary Series attached to an Initial Series, where it has the Initial-series value 9.15.0.0.0. This value we may assume, therefore, belongs to it in the present case, giving us the full date 9.15.0.0.0 4 Ahau 13 Yax. For the present let us pass over the first of these two dates, namely, 3 Ahau 3 Mol, the Initial Series of which as well as the reason for its record here will better appear later.