About this time (the nineteenth and twentieth of August), the explorers lost by death the only member of their party who did not survive the journey.

Floyd River, which flows into the Upper Missouri, in the northwest corner of Iowa, still marks the last resting-place of Sergeant Charles Floyd, who died there of bilious colic and was buried by his comrades near the mouth of the stream.

Near here was a quarry of red pipestone, dear to the Indian fancy as a mine of material for their pipes; traces of this deposit still remain.

So fond of this red rock were the Indians that when they went there to get the stuff, even lifelong and vindictive enemies declared a truce while they gathered the material, and savage hostile tribes suspended their wars for a time.
On the north side of the Missouri, at a point in what is now known as Clay County, South Dakota, Captains Lewis and Clark, with ten men, turned aside to see a great natural curiosity, known to the Indians as the Hill of Little Devils.

The hill is a singular mound in the midst of a flat prairie, three hundred yards long, sixty or seventy yards wide, and about seventy feet high.