The late distinguished Americanist, the Abbé Brasseur de Bourbourg, during his long travels in Mexico and Central America, had occasion more than once to come in contact with this trait of the ancient faith of the Nagualists, still alive in their descendants. Among the Zapotecs of the Isthmus of Tehuantepec he saw one of the queens of the mystic fraternity, and he describes her with a warmth which proves that he had not lost his eye for the beautiful. “She wore a piece of light-green stuff loosely folded around her form at the hips, and falling to a little distance above the ankle; a jacket of red silk gauze with short sleeves and embroidered with gold, clothed the upper part of her person, veiling her bosom, upon which lay a chain of heavy gold pieces, pierced and strung on a cord. Her rich black hair was divided on the forehead, and drawn back in two splendid tresses fastened with blue ribbons, while a white muslin kerchief encircled her head like the calantica of the ancient Egyptians. Never in my life have I seen a more striking figure of an Isis or a Cleopatra. “There was something strange in her expression. Her eyes were the blackest and the brightest in the world; but there were moments when she suddenly paused, leaned against the billiard table or the wall, and they became fixed and dead like those of a corpse. Then a fiery glance would shoot from beneath her dark lashes, sending a chill to the heart of the one to whom it was directed. Was it madness, or was it, as those around her believed, a momentary absence of soul, an absorption of her spirit into its _nagual_, a transportation into an unknown world? Who shall decide?”[37-*] =24.= It would be a mistake to suppose that Nagualism was an incoherent medley of superstitions, a mass of jumbled fragments derived from the ancient paganism. My study of it has led me to a widely different conclusion. It was a perpetuation of a well-defined portion of the native cult, whose sources we are able to trace long anterior to the period of the conquest, and which had no connection with the elaborate and bloody ritual of the Aztecs. The evidence to this effect is cogent. Wherever in later days the Catholic priests found out the holy places and sacred objects of the nagualists, they were in-caves or deep rock-recesses, not in artificial structures. The myths they gleaned, and the names of the gods they heard, also point to this as a distinguishing peculiarity. An early instance is recorded among the Nahuas of Mexico. In 1537 Father Perea discovered a cavern in a deep ravine at Chalma, near Mallinalco (a town famous for its magicians), which was the sanctuary of the deity called _Oztoteotl_, the Cave God (_oztotl_, cave; _teotl_, god), “venerated throughout the whole empire of Montezuma.”[38-*] He destroyed the image of the god, and converted the cavern into a chapel.