CHAPTER IV.

Sit down to write an account of the mines--Medical properties of the Mississippi water--Expedition to the Yellow Stone--Resolve to visit Washington with a plan of managing the mines--Descend the river from St. Genevieve to New Orleans--Incidents of the trip--Take passage in a ship for New York--Reception with my collection there--Publish my memoir on the mines, and proceed with it to Washington--Result of my plan--Appointed geologist and mineralogist on an expedition to the sources of the Mississippi.