309 



and two corresponding terms in the two perio- 

 dical series of thirteen numbers and four signs. 

 The following table presents several remarkable 

 epochas of the Mexican history, indicated ac- 

 cording to the era of the Aztecks. We should 

 recollect, that these nations reckoned the num- 

 ber of their cycles, or xuihmolpillis, only from 

 the year 1091 ; because, in their annals, they 

 had established a new chronological order after 

 their departure from Aztlan, or from the begin- 

 ning of their migrations towards the south. 



