Note 81 — Chapter XIX · DESCRIPTION OF FORT MC KENZIE AND THE ENVIRONS, AND OF THE INDIAN POPULATION LIVING THERE

Teton River—not named for the Sioux tribe of that designation, but from the French word signifying "breast," so called from three neighboring mountain peaks—was designated by Lewis and Clark first Rose then Tansy River. It is the largest affluent of Maria's, rising in the main range of the Rockies in two branches, flowing due east until very near the Missouri; then turning abruptly north-east, and discharging into Maria's. The narrows where the Teton approaches so near the Missouri was known to the voyageurs as "Cracon du Nez."—Ed.