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In page Lord Howe Island:

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From 1851 to 1854, Henry Denham captain of HMS Herald, which was on a scientific expedition to the southwest Pacific (1852–1856), completed the island's first hydrographic survey. On board were three Scottish biologists, William Milne (a gardener-botanist from the Edinburgh Botanic Garden), John MacGillivray (naturalist) who collected fish and plant specimens, and assistant surgeon and zoologist Denis Macdonald. Together, these men established much basic information on the geology, flora, and fauna of the island.[9]