Population
Regarding the comparative population of these tribes with the years 1833 to 1854, the decrease is very great. Smallpox, cholera, measles, and influenza, together with other diseases and wars, incidental to the climate and their pursuits, have reduced the Sioux about one-third, the Mandan three-fourths, the Arikara one-fifth, the Assiniboin one-half, the Cree one-eighth, the Crows one-half, and the Blackfeet one-third less than they were at the former period. They—that is, from the Sioux up—are now slowly on the increase.