Terewe Siw, Seal &dea torarebyn, quartobun quintotin 
fy fag avi nn wtselra eee benabe 
ee a 
Plate XLI. Page from the Tonalamatl Section of the Codex 
Borbonicus. The thirteen days run along the bottom of the page 
and up the left side of the large division. The period covered is 
one-twentieth of the Tonalamatl of 260 days. At the left of each 
day is seen one of the nine Lords of the Night, so-called, in orderly 
succession. In the divisions above or to the left of the days are 
the thirteen gods of the Hours of the Day in connection with the 
Thirteen Birds. The patron goddess of this division of the Tonala- 
matl is Itzpapalotl, the obsidian butterfly. The other pictures 
relate mostly to mythological instances and the details of ceremonies. 
For instance, the broken tree represents Tamoanchan, a legendary 
site, and the sacrifice of twenty birds is indicated by the flag at- 
tached to the bleeding head of a decapitated bird. 
202 
