Two years before, just as my work was ending, we were in the great Otomi town of Huixquilucan, in the state of Mexico. While resting at midday, I noticed a neatly-dressed and clean young indian, plainly not Otomi, with whom I conversed. He was an Aztec, and much interested in the work we were doing. In our conversation, he told me that I would find much of interest in the state of Hidalgo, and particularly called my attention to the making of paper from bark, which he had observed in the town of San Gregorio, two years before. This particularly interested me, and I then made notes regarding the method of getting to San Gregorio. I was advised by him, in case of going to that place, to talk with Don Pablo Leyra, of Huehuetla, who was himself an Indian and a man of consequence in the district—a sort of cacique among his people. Several years ago, I had first learned from Senor Eurosa, a Mexican Protestant clergyman, that in the little town of Tlacuilotepec, there still survive interesting pagan practices. In planning our present journey, I had arranged to visit San Gregorio and Tlacuilotepec for the purpose of investigating this manufacture of paper and these pagan customs. Inquiring of the presidente of Pahuatlan about his indians, I asked regarding paper-beating, and discovered that it was done at the nearest indian village of San Pablito, Otomi. We were told that bark of several species of trees was used—jonote, dragon, and mulberry; that the paper is usually made secretly and in-doors; that the passing traveller can hear the sound of light and rapid pounding as he passes through the village; that it is made in every house,