Scope and Contents Geologist, mineralogist and paper manufacturer. Attended Dr. Thomas Cooper's Scientific School in Philadelphia, beginning about 1816. Elected a member of the Academy of Natural Sciences of Philadelphia and became very active in its affairs. Made a trip to Mexico in 1817 or 1818, and returned with valuable mineral collections. In 1819 joined Major Long's Expedition to the Rocky Mountains as its official geologist. He bequeathed extensive mineralogical and geological collections to the...