PREFACE. ix 



second, from this, together with historical evidence. The tribe appears to 

 have been at the time in a peaceable, quiet, and comparatively happy con- 

 dition, which will carry us back to a time preceding the fall of Mayapan, 

 and before the introduction of Aztec soldiers by the Cocomes. 



11 th. I think we find conclusive evidence in the work that the Ahau 

 or Katun was a period of 24 years, and the great cycle of 312; also, that 

 the series commenced with a Cauac instead of a Kan year, as has been 

 usually supposed. 



Lastly, I add that I think Brasseur was right in supposing that this 

 work originated in that section of the peninsula known as Peten. 



CYRUS THOMAS. 



