THOMAS] NUMBER OF CYCLES IN GREAT CYCLE 239 



Using this remainder and counting forward from !i Kan 12 Kayab 

 (same initial date as before), we reach 3 Kan 17 Uo, year 6 Lamat. 

 This is correct, as it gives the date below, except as to the day of the 

 month — which is given as 16 Uo in the original, but should be 17 Uo, 

 as Kan is never the 16th day of the montli. What is meant hy the 

 calendar rounds and the reason for subtracting them was fullj' 

 explained above and in my previous paper. 



The black series of the same pair changed into days gives the fol- 

 lowing numbers: 



Days 



4 great cycles (of 30 cycles each) 11, o20. 000 



6 cycles - 864.000 



Gkatnns- --- 64,800 



15 ahaus 5,400 



12 ehuens ._ 240 



todays 10 



Total.. 12,454,4.59 



Subtract 656 calendar rounds 13, 450. 880 



Remainder 3. 579 



Counting forward this number of days from 9 Kan 12 Kayab, year 

 3 Ben, we reach 13 Akbal 1 Kankin, year 13 Akbal. This also is 

 correct. 



The next series noticed is the one consisting of black numerals iu 

 the folds of the serpent on plate lxix of the Dresden codex (our 

 plate LXXX). This is as follows: 4-5-19-13-12-8, 4 Eb ? (month) ; the 

 month symbol is obliterated. As the black and red are not zigzagged 

 in this instance, the date belonging to the black series stands imme- 

 diately under it. Changed into days, the series gives the following 

 result : 



Days 



4 great cycles (of 20 cycles each) 11, 530, 000 



5 cycles ". 720,000 



lOkatuus --. - 136,800 



13ahaus 4,680 



12chuens 240 



8 days 8 



Total ---- -- 13,381.728 



Subtract 653 calendar rounds. 12. 374. 960 



Remainder 6, 768 



In this instance, as on plate LXII of the codex, the date 9 Kan 12 

 Kayab stands above the serpent. Counting forward 0,768 days from 

 this date, we are brought to 4 Eb 5 Chen, year 9 Lamat, which agrees 

 with the unobliterated part of the date given below. 



"We have,' therefore, in the data presented positive proof that in 

 five instances in the Dresden codex the day 9 Kan 12 Kayab is the 

 first day of a great cycle, and tliat twenty cycles are counted to one 



