He received federal funding and was named U.S. Geologist of the Geological Exploration of the Fortieth Parallel , commonly known as the Fortieth Parallel Survey , in 1867 .
King made a persuasive argument for how his research would help develop the west .
King received federal funding and was named U.S. Geologist of the Geological Exploration of the Fortieth Parallel , commonly known as the Fortieth Parallel Survey , in 1867 .
King made a persuasive argument for how his research would help develop the west .