Note 53 — Chapter XVIII · VOYAGE FROM MUSCLESHELL RIVER TO FORT MC KENZIE, FROM JULY 28TH TO AUGUST 9TH

Now Arrow River, rising in Baldy Range and flowing north-east, forming part of the boundary between Chouteau and Fergus counties. There is, however, an inadvertence in the use of this name. Lewis and Clark at first named Judith's River Bighorn, later abandoning this cognomen for its present name. The next stream above, on the south side, the explorers named Slaughter River for a herd of buffalo slaughtered by Indians below its cliffs. The published map, however, errs by placing here two rivers—Bighorn (which should be an alternate for Judith) and Slaughter Creek beyond the stone walls. Clark's "Summary Statement," Original Journals, vi, p. 62, gives this correctly.—Ed.

By a typographical error the Crow name for the Bighorn is given wrongly as "Ichpnaotsa" instead of "Ichpoa-tassa" (close articulation, ich guttural, tassa soft, short, and without emphasis).—Maximilian.