Melbourne: Dulau and Co./Melville, Mullen and Slade, 1896. Octavo, text illustrations; a total of 69 plates including eleven zoological chromolithographs (three bird plates by Neville Cayley senior; three mammal, four reptile and one frog), folding map. Publisher's dark blue cloth (a little tired and rubbed).

The Horn Expedition is the most comprehensive record of a scientific expedition undertaken in Australia in the nineteenth century. Sir Walter Baldwin Spencer was the leader of the expedition and the principal editor of the official account. The four volumes are made up of the Narrative, Zoology, Geology and Botany, and Anthropology. The reports were written by the notable Australian scientists of the day, including Spencer himself, Professor Ralph Tate, J.A. Watts, J.H. Maiden, E.C. Stirling, Alfred J. North, Waiter Froggatt, and Edgar Waite G. A. Keartland was the ornithologist on the expedition.

The bird plates by Neville Henry Pennington Cayley [senior] are particularly fine and the only coloured plates ever published during the artist's lifetime.

Ferguson, 16071; Greenway, 8672; Nissen, ZBI 1991.