Plate XLIV. Page from the Tonalamatl Section of the Codex Bor- 

 bonicus. The thirteen days run along the bottom of the page and up 

 the right 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 divi- 

 sions 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 Tonalamatl is Itzpapalotl, the obsidian butterfly. 

 The other pictures relate mostly to mythological instances and the 

 details of ceremonies. For instance, the broken tree represents Tamoan- 

 chan, a legendary site, and the sacrifice of twenty birds is indicated by 

 the flag attached to the bleeding head of a decapitated bird. 



20G 



