In 1858 Frank Gregory reached the Gascoigne River, Western Australia, and discovered Mount Augustus and Mount Gould. A. C. Gregory in the same year, when searching for Leichhardt, confirmed the identity of the Barcoo River with Cooper's Creek. In 1858 also McDouall Stuart started on his first expedition across the continent; in the following year he started again, and one of his party, Hergott, discovered and named Hergott Springs. In 1859 G. E. Dalrymple discovered the main tributaries of the Lower Burdekin, also the Bowen and the Bogie Rivers, and in the year following Edward Cunningham and party explored the Upper Burdekin. In 1860 the ill-fated Burke and Wills expedition left Melbourne, and reached the Gulf of Carpentaria, but their return journey resulted in the death of Burke, Wills, and Gray. In 1861 McDouall Stuart crossed the continent; Frank Gregory discovered the Hammersley Range, and the Fortescue, Ashburton, de Grey, and Oakover Rivers in Western Australia. In the same year William Landsborough left the Gulf of Carpentaria in search of Burke and Wills; and Alfred Howitt started from Victoria on the same errand. Edwin J. Welch, Howitt's second in command, found King, the only survivor of the expedition; and McKinlay, with W. O. Hodgkinson as lieutenant, started from Adelaide in the search, and crossed the continent, reaching the coast at Townsville. In 1863 John Jardine formed a settlement at Somerset, Cape York; and in the next year his adventurous brothers, Alexander and Frank, travelled overland to Somerset along the Peninsula, which Kennedy had failed to do. In 1864 Duncan McIntyre travelled from the Paroo to the Gulf of Carpentaria, and died there. Next year J. G. Macdonald visited the Plains of Promise, and Frederick Walker marked the telegraph line from Rockingham Bay to the Norman River. In 1869 Mr. (now Sir John) Forrest made his first expedition to Lake Barlee; in 1870 he travelled the Great Bight from Perth to Adelaide, and in 1871 took charge of a private expedition in search of pastoral country. In 1872 William Hann, a Northern squatter, led an expedition equipped by the Queensland Government, and discovered the Walsh, Palmer, and Upper Mitchell Rivers, and found prospects of gold which led to great mineral discoveries in North Queensland. Hann reached the coast at Princess Charlotte Bay. In the same year J. W. Lewis travelled round Lake Eyre to the Queensland border. Ernest Giles also made his first expedition in 1872, discovering Lake Amadeus, and on a second trip in 1873 discovered and named Gibson's Desert, after one of his party who died there. In 1873 Major Warburton crossed from Alice Springs, on the overland telegraph line, to the Oakover River, Western Australia. In 1875-6 Ernest Giles made a third and successful attempt from Adelaide to reach Western Australia. In the same year W. O. Hodgkinson started on a north-west expedition to the Diamantina and Mulligan Rivers, on which he officially reported.