Darwin and Huxley supported the accuracy of John Joly's calculation of Earth's age because it agree with their view of how long evolution had been in progress.

达尔文和赫胥黎肯定了约翰·乔利计算的地球年龄的准确性，因为这与他们关于进化进行了多长时间的观点不谋而合。

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He told the BBC: "Awaiting Darwin on Ascension was a letter from his Cambridge mentor, John Henslow."

他对BBC说：“在阿森松岛达尔文收到他的剑桥导师，约翰亨斯洛的信。”

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John Henslow suggested that Charles Darwin take the unpaid position of naturalist for a trip on the British ship H.M.S. Beagle.

约翰.亨斯洛建议查尔斯.达尔文以博物学者的身份，自费乘坐英国舰船贝格尔号出去考察。

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The two became friends. John Henslow suggested that Charles Darwin take the unpaid position of naturalist for a trip on the British ship H.M.S.Beagle.

VOA: special.2009.02.25

John Darwin and his wife Anne were convicted of insurance fraud in 2008 over the faking of his death.

BBC: John Darwin email 'hacking' case dropped by CPS

The giant tortoises, mockingbirds and finches varied from island to island, and this became clearer to Darwin after London Zoo's bird expert John Gould analysed his finches in January 1837.

BBC: Darwin's twin track: 'Evolution and emancipation'