On 1 May 1853, Tully became a road surveyor, and a third-class surveyor on 1 May 1854 until his resignation in July 1856. Then he was a contract surveyor until 31 December 1858 when he was appointed inspecting surveyor. Tully acted for a while as a gold commissioner and in 1859. He was a foundation member of the
Tasmanian Club; in 1860 he married Louisa (died 26 February 1866), granddaughter of
Simeon Lord, at Hobart. In October 1863 (with a glowing reference from
James Erskine Calder,
Surveyor General of Tasmania) Tully arrived in
Queensland as a commissioner of
Crown lands in the
Kennedy and Warrego pastoral districts during which he surveyed the site of the town of
Charleville, Queensland (which he named for
Charleville, County Cork where he had spent his youth). On 16 August 1866 Tully became under-secretary for public lands and chief commissioner of crown lands. Soon afterward he clashed with
Sir Augustus Charles Gregory, the
Surveyor General of Queensland. On 12 March 1875, Tully became acting Surveyor General replacing Gregory. In 1880 on Tully's advice, the offices of Surveyor General and under-secretary for lands were divided; on 9 July Tully was made Surveyor General and Edward Deshon became under-secretary for lands. Tully had assisted to draft the Lands Alienation Act (1868) and the Consolidating Crown Lands Alienation Act (1876); as Surveyor General, he supervised an expansion of activities, endeavored to improve standards and enhanced reproduction of Survey Office maps. Tully was appointed to the Land Board on 4 December 1889 and retired on 31 December 1900. ==Late life and legacy==