Thus, he relocated to
Mackay in 1867 and set-up the cotton and sugar plantation
Alexandra together with
Thomas Henry Fitzgerald. He investigated new varieties of sugar cane and methods of production and visited many other areas in the world over his career. As Davidson participated in violent raids on a number of Aboriginal camps, he was able to collect
Aboriginal artefacts for the
British Museum. In most cases, however, Davidson and others would burn the weapons and instruments that were left behind after these attacks. He recorded a species of plum tree and was the first Briton to identify a
comet in Queensland with his own telescope. He also donated aboriginal artefacts to the
Dresden Museum of Ethnology in 1881: A shield (No 33073) found at the
Mulgrave River shows an inscription on the handle ‘Australia from Baessler’, which is an indication that Davidson had teamed-up with the German anthropologist and photographer
Arthur Baessler (1857–1907) when he travelled in Australia in 1891–1893. From approximately 1881, he part-owned W. Sloane & Co. in
Melbourne, which invested heavily in the Mackay sugar industry. It changed its name to Melbourne Mackay Sugar Company in 1882. Subsequently, Davidson managed six mills and estates using the most modern and expensive equipment. In 1884, Davidson travelled to England to try to persuade the Colonial Office to allow importations of Indian labourers, after the kanaka trade had ceased. After the crisis of the Queensland sugar industry in 1888, Davidson testified to the Royal Commission into the industry that four of the six of his company's estates were idle. He sought protection to protect the fledgling Queensland industry from European bounty-fed beet sugar. Due to the advent of the Federation and introduction of governmentally supported Central Mills, the cane industry declined and the business of the large sugar estates slowed-down significantly. This comet is now known as
C/1889 O1 (Davidson), and it was observed by astronomers until November 1889. Around 1900, he returned with his family for his retirement to England, and died there at his
Oxford home on 2 September 1923. == References ==