Discussion of a "McCulloh" process for refining of gold, named for Richard Sears McCulloh (1818-1894) an American civil engineer and pupil of James Curtis Booth (1810-1888) from 1838 to 1839.
Campbell Morfit (1820-1897), a distinguished chemist and co-editor with James Curtis Booth (1810-1888) of the Encyclopedia of Chemistry (1850), writes to Booth to discuss the notorious pamphlet of Richard Sears McCulloh (1818-1894) in detail.
U.S. National Archives (Record Group 104, Entry 216, Letters Received from Branch Mints and Assay Offices, 1834-1873)
Description:
U.S. Mint correspondence, covering the period July 3, 1851 to December 29, 1852. Scanned from the U.S. National Archives, record group 104 (U.S. Mint), entry 216, volume 9, courtesy of Roger W. Burdette.
Mint Director Robert M. Patterson's report for the year 1850.
Paul Hybert summary: "A report from mint director R.M. Patterson to President Fillmore, who relayed it to Congress. The gold from California is reaching the mints in much larger quantities than in previous years."
