During the years 1818-19, I spent a considerable time with, or in the vicinity of, the Comanche Indians of Texas. My purpose was the renovation of an impaired constitution, seriously threatened with pulmonary consumption, in which I succeeded beyond my utmost expectations. This residence in the Indian country, enabled me to collect some facts in relation to the Comanches, and some minor tribes of Texas, which may possibly be worthy of being communicated to the Department of Indian Affairs, in reply to the very voluminous inquiries concerning the aborigines of the United States