CHAPTER III [XI of Vol. III]--Red River. Exploring

Expedition of 1806. Return to the Arkansa. Earthquakes 61

A General Description of the Country traversed by the exploring Expedition. _Stephen Harriman Long_ 94

Observations on the Mineralogy and Geology of a Part of the United States west of the Mississippi. _Augustus Edward Jessup_ 183

Calculations of Observations made ... on a tour from the Council Bluffs on the Missouri River, westward along the river Platte to its head waters in the Rocky Mountains,--thence southwardly to the head waters of the Arkansa and Canadian rivers, and down said rivers to Belle Point, performed in 1820. [From Philadelphia edition, 1823]. _Stephen Harriman Long_, and _William Henry Swift_ 256

Vocabularies of Indian Languages [from Philadelphia edition, 1823]. _Thomas Say_ 289

ILLUSTRATION TO VOLUME XVII

Vertical Section on the Parallel of Latitude 41 degrees North; and on the Parallel of Latitude 35 degrees North 185