30 MAYA AND MEXICAN MANUSCRIPTS. 



If we examine the columns of this list, we see that each one contains 

 the days of some one of the four columns of the arrangement hereto- 

 fore given ; not always in precisely the same order, but the same days. 



Without stopping to attempt a further explanation of this calendar 

 or Tonalamatl, which is not within the scope of our present purpose, I 

 merely remark that it is evidently a representation of the Mexican 

 "cycle of two hundred and sixty days," or thirteen months, the common 

 multiple of 4, 5, 13, and 20, and hence a cycle, at the completion of which 

 the day, numeral, &c. (except the month), will be the same as at the 

 beginning. 



