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PubMed2001

Just before the Beagle: Charles Darwin's geological fieldwork in Wales, summer 1831.

Darwin returned to Shrewsbury in mid-June 1831 and spent that summer learning geology. He made geological maps of Shropshire and visited Llanymynech and other localities. From 3-20th August he joined Sedgwick on his tour of North Wales; they geologised west of Shrewsbury before travelling through Llangollen, Ruthin, Conwy to Bangor finally reaching Anglesey. Darwin left Sedgwick at Menai and walked to Barmouth making a special visit of Cwm Idwal. He returned to Shrewsbury on 29th August to open the letter from Fitzroy inviting him to join the Beagle. During this summer Darwin gained skills in all aspects of geology, including chemical analysis, which were to prove vital in the development of his ideas on natural selection.

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