This track laid across highlands, which divide the confluent waters of the Missouri from those of the Mississippi.

Indians, wild beasts, starvation, thirst, were the dangers of the way.

This journey, which led into the vast and desolate parts of Arkansas, was replete with incidents and adventures of the highest interest.
While in Missouri, and after his return from this adventurous journey, he drew up a description of the mines, geology, and mineralogy of the country.

Conceiving a plan for the better management of the lead mines as a part of the public domain, he determined to visit Washington, to submit it to the government.

Packing up his collections of mineralogy and geology, he ordered them to the nearest point of embarkation on the Mississippi, and, getting on board a steamer at St.Genevieve, proceeded to New Orleans.