1843—Captain Frome, Surveyor-General of South Australia; explorations in the neighbourhood of Lake Torrens.
1843—Messrs. Landor and Lefroy; exploration in Western Australia.
1843—J. A. Horracks was killed by the explosion of his gun at the head of Spencer's Gulf soon after the start of his expedition.
1844—45-Captain Charles Sturt; Great Central Desert expedition.
1844-45—Dr. Ludwig Leichhardt; first expedition, from Jimbour Station, Darling Downs, to Port Essington; Gilbert, the naturalist, killed by natives.
1845-46—Sir Thomas Mitchell; Barcoo expedition.
1846—Dr. Ludwig Leichhardt's second expedition.
1846—A. C. Gregory and brothers; first expedition in Western Australia.
1847—E. Kennedy; to decide the final course of the Victoria, named the Thompson.
1847—Baron Von Mueller; expeditions, for botanical and geographical researches combined, in South Australia and the Australian Alps.