_Plate_ 50: IV Eb. III Ik. VI Eb. 1 Ahau. 7 7 8 8 3 7 1 2 12 2 12 0 In considering these horizontal lines it is to be understood that the series runs through the five pages, 46-50. Let us proceed upon the supposition that the figures of the lowest of the three lines denote days of the month, the numbers of the middle line months, and those of the upper line years. As already shown, the interval between 8 Cib and 7 Cimi is 4 months and 10 days; adding 4 months and 10 days to 11 months and 16 days (bearing in mind that 20 days make a month and 18 months a year), the sum is found to be 16 months and 6 days, precisely the figures under 7 Cimi. As already ascertained, the interval between 7 Cimi and 10 Cib is 12 months and 10 days; this added to 16 months and 6 days gives 1 year, 10 months, 16 days, precisely the figures under 10 Cib. The interval between 10 Cib and 5 Kan is 8 days; this added to the 1 year, 10 months, and 16 days gives 1 year, 11 months, and 4 days, the figures under 5 Kan. The interval between 5 Kan and 7 Ahau is 11 months, 16 days, which, added to the preceding, gives 2 years, 5 months, 0 day, agreeing with the figures under 7 Ahau, if the symbol represented by 0 signifies nought. That this rule holds good throughout the entire series, by making one correction, is shown by the following additions: Years. Months. Days. 11 16 Under VIII Cib, Plate 46. 4 10 -- -- 16 6 Under VII Cimi, Plate 46. 12 10 -- -- 1 10 16 Under X Cib, Plate 46. 8 -- -- -- 1 11 4 Under V Kan, Plate 46. 11 16 -- -- -- 2 5 0 Under VII Ahau, Plate 47. 4 10 -- -- -- 2 9 10 Under VI Oc, Plate 47. 12 10 -- -- -- 3 4 0 Under IX Ahau, Plate 47. 8 -- -- -- 3 4 8 Under IV Lamat, Plate 47. 11 16 -- -- -- 3 16 4[300-1] Under VI Kan, Plate 48. 4 10 -- -- -- 4 2 14 Under V Ix, Plate 48. 12 10 -- -- -- 4 15 4 Under VIII Kan, Plate 48. 8 -- -- -- 4 15 12 Under III Eb, Plate 48. 11 16 -- -- -- 5 9 8 Under V Lamat, Plate 49. 4 10 -- -- -- 5 13 18 Under IV Ezanab, Plate 49. 12 10 -- -- --