Thomas Henry Farrer, assistant secretary of the Marine Department of the Board of
Trade, first joined the department on 15 August 1850 as a secretary. He was promoted
to assistant secretary in April 1853 amd to marine secretary in July 1863, to secretary
on 30 September 1865, and permanent secretary on 2 January 1867.
Office-Holders, Board of Trade, p. 96.BCDES 18.1.