On February 18, 1837, the Delaware Legislature passed an act "to procure to make a geological and mineralogical survey of the State." Three commissioners, one from each county, were named to hire a geologist: Thomas Stockton, Jonathan Jenkins, and Dr. Henry F. Hall. The commissioners were also to spend some time in the field with the geologist. Stockton spent 40 days; Hall, 28; and Jenkins, 11. They were paid $3 per day. On June 1, 1837, they hired James Curtis Booth (1810 - 1888), a Philadelphia chemist-mineralogist, as the Delaware State Geologist at a salary of $1200 per year.