In 1871, at the age of 23, James Owen Dorsey, previously a student of divinity with a predilection for science, was ordained a deacon of the Protestant Episcopal church by the bishop of Virginia; and in May of that year he was sent to Dakota Territory as a missionary among the Ponka Indians. Characterized by an amiability that quickly won the confidence of the Indians, possessed of unbounded enthusiasm, and gifted with remarkable aptitude in discriminating and imitating vocal sounds, he at once took up the study of the native language, and, during the ensuing two years, familiarized himself with the Ponka and cognate dialects; at the same time he obtained a rich fund of information concerning the arts, institutions, traditions, and beliefs of the Indians with whom he was brought into daily contact. In August, 1873, his field work was interrupted by illness, and he returned to his home in Maryland and assumed parish work, meantime continuing his linguistic studies. In July, 1878, he was induced by Major Powell to resume field researches among the aborigines,