After entering the Río Negro by the Pimichín, and passing the small cataract at the confluence of the two rivers, we saw the mission of Maroa a quarter of a league off. This village of 150 Indians appeared prosperous and cheerful. We bought some beautiful live toucans (piapoco) birds whose 'intelligence' can be trained, like our ravens. Above Maroa we passed the mouths of the Aquio and of the Tomo. We did not enter the Tomo mission, but Father Zea told us with a smile that the Indians of Tomo and Maroa had been in full insurrection because monks had tried to force them to dance the famous 'dance of the devils'. The missionary had wanted to hold the ceremony in which the piastres (who are shamans, doctors and conjurors) evoke the evil spirit Jolokiamo, but in a burlesque way. He thought that the 'dance of the devils' would show the neophytes that Jolokiamo no longer had any power over them. Some young Indians, believing the missionary's promises, agreed to act as devils; they were decked out in black and yellow feathers and jaguar skins with long tails. The church square had been surrounded by soldiers from other missions to make the missionary more redoubtable. Indians who were unsure about the dance and the impotence of the evil spirits were brought along. But the oldest of the Indians managed to imbue all the younger ones with a superstitious dread and they decided to flee al monte. The missionary had to postpone his project of mocking the Indian demon.