Classifier Instance:

Anchor text: The voyage of the Beagle
Target Entity: Second_voyage_of_HMS_Beagle
Preceding Context: Ecuador annexed the Galápagos Islands on 12 February 1832, naming them the Archipelago of Ecuador. This new name added to several names that had been, and are still, used to refer to the archipelago. The first governor of Galápagos, General José de Villamil, brought a group of convicts to populate the island of Floreana, and in October 1832, some artisans and farmers joined them.
Succeeding Context: brought the survey ship HMS Beagle, under captain Robert FitzRoy, to the Galápagos on 15 September 1835 to survey approaches to harbours. The captain and others on board, including his companion, the young naturalist Charles Darwin, made observations on the geology and biology on Chatham, Charles, Albemarle and James islands before they left on 20 October to continue on their round-the-world expedition. Primarily a geologist at the time, Darwin was impressed by the quantity of volcanic craters they saw, later referring to the archipelago as "that land of craters." His study of several volcanic formations over the 5 weeks he stayed in the islands, led to several important geological discoveries, including the first, correct explanation for how volcanic tuff is formed. Darwin noticed the mockingbirds differed between islands, though he thought the birds now known as Darwin's finches were unrelated to each other, and did not bother labelling them by island. The Englishman Nicolas Lawson, acting Governor of Galápagos for the Republic of the Equator, met them on Charles Island, and as they walked to the prison colony, told Darwin the tortoises differed from island to island. Towards the end of the voyage, Darwin speculated that the distribution of the mockingbirds and the tortoises might "undermine the stability of Species". When specimens of birds were analysed on his return to England, it was found that many apparently different kinds of birds were species of finches, which were unique to islands. These facts were crucial in Darwin's development of his theory of natural selection explaining evolution, which was presented in .
Paragraph Title: null
Source Page: Galápagos Islands

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