Robert Oliver Cunningham was a Scottish naturalist. In January 1866 he was appointed Professor of Natural History in the Royal Agricultural College, Cirencester, but resigned in June in consequence of being appointed by the Admiralty upon the recommendation of Joseph Dalton Hooker, to collect plants as naturalist on board HMS Nassau. His natural history notes and narrative of the voyage was published in 1871 as The Natural History of the Straits of Magellan. In all, Cunningham published 18 scientific papers before 1872, his first which was about gannets was his theses but the others were mainly on his observations from the voyage of the Nassau. He presented some of these papers to the Zoological Society of London and to the Linnean Society. In 1871 Cunninham was appointed Professor of Natural History at Queens College, Belfast where he spent the following 31 years as a university teacher
Naturalist
Paul Belloni Du Chaillu was a French-American traveller, zoologist and anthropologist. He became famous in the 1860s as the first modern European to confirm the existence of gorillas
James Duff, 5th Earl Fife, was a Scottish nobleman and politician
Engineers
Daniel Giraud Elliot was an American zoologist. He used his wealth to publish a series of colour-plate books on birds and animals. Elliot wrote the text himself and commissioned artists such as Joseph Wolf and Joseph Smit, both of whom had worked for John Gould, to provide the illustrations. The books included A Monograph of the Phasianidae (Family of the Pheasants) (1870–72), A Monograph of the Paradiseidae or Birds of Paradise (1873),[3] A Monograph of the Felidae or Family of Cats (1878) and Review of the Primates (1913). In 1899 he was invited to join the Harriman Alaska Expedition to study and document wildlife along the Alaskan coast. Elliot was one of the founders of the American Museum on Natural History in New York City, of the American Ornithologists' Union and of the Société zoologique de France. He was also curator of zoology at the Field Museum in Chicago