272 AIDS TO THE STUDY OF THE MAYA CODICES. 



Kiin. fourth column. The reason for this is so apparent that it is 

 iniiicccssary to state it. 



Suppose the day counted from is 11 Muluc of the eleventh month, 

 and the number of days to be counted (or the interval) is 19; by 

 adding together the numbers and casting out the thirteens the fol- 

 lowing result is obtained: 11 + 19 — 13 — 13=4. Counting forward on 

 the table 19 days from 11 Muluc (the sixth number in the eleventh 

 figure column), we reach -1 Lamat (the fourth day of the twelfth 

 month). When the sum of the numbers is- a multiple of 13 the 

 number obtained is 1 3, as there can be no blanks, that is to say, no 

 day withoiit a number. 



As the plates of the codices are usually divided into two or three 

 compartments by transverse lines, it is necessary to adopt some method 

 of referring to these in order to avoid the constant repetition of 

 "iipper," "middle," and "lower" division. On the plan proposed 

 by Dr. Forstemanu, in his late work on the Dresden Codex (Erlauter- 

 ungen zur Mayahandschrift der Koniglichen offeutlichen Biblio- 

 thek zu Dresden), these divisions are designated by the letters a, b, 

 and c; this plan will be adopted in this p.-i.pcr. Thr li'tti.-r a joined to 

 the number of a plate, therefore, willsiunif) lliat tlic(livisi(iii referred 

 to is the upper one, as Plate 13«; the IdtiT h signilics tlu' middle one 

 where there are three divisions or the lower one where there are but 

 two; and the letter c signifies the lowest or bottom division where 

 there are three. 



Where reference is made to the fac simile of the Dresden Codex, 

 Kingsborough's colored edition is always to be understood, excejjt 

 where another is specially mentioned. 



Running through Plates 3Gc and 37c is a continuous line of day 

 symbols and red and black numeral characters as follows, the num- 

 bers and names below the characters being explanatory and of course 

 not on the original: 



___« 5^"^, i «^_ g-g^ j o_ooo 



10 XlMenl 15 XIK Oc ' 9 ixCfluat 



Pl.37. 



II 



I Oc i 10 xiAhoM 



Fig. 359. Lines of day and numeral symbols. 



As colors are not used in these figiires the red numerals are indi 

 cated by hollow or outline dots and lines and the black numerals by 

 solid lines and dots. ' 



' This method will be adopted throughout this paper where figures containing 

 numerals are introduced. 



