Daniel Garrison Brinton 
Nagualism 
A Study in Native American Folk-Lore and History

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. It is evident on examining the later works of the Roman clergy in Mexico that the Church did not look with any such lenient eye on the possibly harmless, or even beneficial, exercise of these magical devices. We find a further explanation of what they were, preserved in a work of instruction to confessors, published by Father Juan Bautista, at Mexico, in the year 1600.