THOMAS.] SERIES ON PLATES 4(i TO 50. 301 



Dr. Forstemann's method is reserved for a future paper, as his work 

 was not received until I Avas revising my notes for publication. 



The foregoing explanation of the series shows it to be very simple 

 and makes it clear that it relates to the day columns at the top of 

 the pages. Still, there is one point somewhat difficult to understand. 

 Are the numbers of the third or lowest line intended to denote the 

 positions in the month of the days in the columns above? If so, 

 the month must have commenced with Ymix, as can readily be 

 shown in the following manner: 



Table III. 



1. Ymix. 



3. Ik. 



3. Akbal. 



4. Kan. 



5. Chicchan. 



6. Cimi. 



7. Manik. 



8. Lamat. 



9. Muluc. 



10. Oc. 



11. Chuen. 



12. Eb. 



13. Been. 



14. Ix. 



15. Men. 



16. Cib. 



17. Caban. 



18. Ezanab. 



19. Cauac. 

 30. Ahau. 



If we write in a column in proper order the 20 days of the Maya 

 month, commencing with Ymix, and number them consecutively^ 

 as in Table III, we shall find by comparison that the numbers in 

 the lower line indicate the position, in this column, of the days di- 

 rectly over them. Take, for example, the lower line of black num- 

 erals on Plate -16, writing over them the respective days of the col- 

 umns, thus: 



Cib. ami. Cib. Kan. 



16 6 16 4 



Referring to Table III we see that Cib is the sixteenth day, Cimi 

 the sixth, and Kan the fourth. 

 The days and numbers of Plate 47 are: 



Aliau. Oc. Ahau. Lamat. 



10 8 



Ahau is the twentieth day — hei-e is the diamond shaped symbol — 

 Oc is the tenth, and Lamat the eighth, and so on to the end of the 

 series on Plate 50. 



