24. The Cave-temples and the Cave-gods; Oztoteotl, Tepeyollotl, Votan, etc. 25. The Sacred Numbers, 3 and 7. 26. Fire Worship of the Nagualists. 27. Fire Rights Connected with the Pulque. 28. Fire Ceremonies of the Modern Mayas. 29. Secret Significance of Fire Worship. 30. The Chalchiuites, or Sacred Green Stones. 31. The Sacred Tree and the Tree of Life. 32. The Cross and its Symbolic Meaning. 33. The Lascivious Rites of the Nagualists. 34. Their Relation to the Symbols of the Serpent and the Phallus. 35. Confusion of Christian and Native Religious Ideas; Prayers of Nagual Priests. Their Symbolic Language. 36. The Inquisition and Nagualism. 37. Etymology of the Word _Nagual_. 38. The Root _Na_ in the Maya, Zapotec and Nahuatl Languages. 39. The Doctrine of Animal Transformation in the Old World. 40. The Doctrine of Personal Spirits in the Old World. 41. Scientific Explanations of Nagual Magic. 42. Conclusion. REPRINTED FEB. 23, 1894, FROM PROC. AMER. PHILOS. SOC., VOL. XXXIII. =1.= The words, a _nagual_, _nagualism_, a _nagualist_, have been current in English prose for more than seventy years; they are found during that time in a variety of books published in England and the United States,[4-*] yet are not to be discovered in any dictionary of the English language; nor has _Nagualism_ a place in any of the numerous encyclopædias or “Conversation Lexicons,” in English, French, German or Spanish. This is not owing to its lack of importance, since for two hundred years past, as I shall show, it has been recognized as a cult, no less powerful than mysterious, which united many and diverse tribes of Mexico and Central America into organized opposition against the government and the religion which had been introduced from Europe; whose members had acquired and were bound together by strange faculties and an occult learning, which placed them on a par with the famed thaumaturgists and theodidacts of the Old World; and which preserved even into our own days the thoughts and forms of a long suppressed ritual. In several previous publications I have referred briefly to this secret sodality and its aims,[4-†] and now believe it worth while to collect my scattered notes and present all that I have found of value about the origin, aims and significance of this Eleusinian Mystery of America. I shall trace its geographical extension and endeavor to discover what its secret influence really was and is. =2.= The earliest description I find of its particular rites is that which the historian Herrera gives, as they prevailed in 1530, in the province of Cerquin, in the mountainous parts of Honduras. It is as follows: