Charles Robert Darwin được sinh ra tại Shrewsbury, Shropshire, Anh, ngày 12 tháng 2 năm 1809 tại nhà gia đình của ông, The Mount. [19] ông là thứ năm trong 6 người con của bác sĩ giàu có xã hội và tài chính Robert Darwin, và Susannah Darwin (nhũ danh Wedgwood). Ông là cháu của hai chính nghĩa bãi nô nổi bật: Erasmus Darwin trên cha của mặt, và của Josiah Wedgwood bên của mẹ mình.Ba phần tư chiều dài gương điển hình của cậu bé ngồi mỉm cười và nhìn vào người xem. Ông có mái tóc nâu thẳng giữa, và mặc quần áo tối với một cổ áo trắng xếp con lớn. Trong vòng của mình, ông giữ một nồi của thực vật có hoaBức tranh của bảy tuổi Charles Darwin năm 1816.Cả hai họ đã là phần lớn Unitarian, mặc dù các Wedgwoods đã chấp nhận Anh giáo. Robert Darwin, mình lặng lẽ một freethinker, đã có em bé Charles têm năm 1809 ngày trong giáo hội Anh giáo St Chad, Shrewsbury, nhưng Charles và anh chị em của mình đã tham dự nhà thờ Unitarian với mẹ của họ. Charles tám tuổi đã có một hương vị cho lịch sử tự nhiên và thu thập khi trường ngày do nhà thuyết giáo của nó năm 1817. Ngày đó, mẹ ông qua đời. Từ tháng 9 năm 1818, ông gia nhập anh trai Erasmus học gần đó Anh giáo Shrewsbury học trường nột trú. [20]Darwin spent the summer of 1825 as an apprentice doctor, helping his father treat the poor of Shropshire, before going to the University of Edinburgh Medical School, at the time the best medical school in the UK, with his brother Erasmus in October 1825. He found lectures dull and surgery distressing, so neglected his studies. He learned taxidermy from John Edmonstone, a freed black slave who had accompanied Charles Waterton in the South American rainforest, and often sat with this "very pleasant and intelligent man".[21]In Darwin's second year he joined the Plinian Society, a student natural history group whose debates strayed into radical materialism. He assisted Robert Edmond Grant's investigations of the anatomy and life cycle of marine invertebrates in the Firth of Forth, and on 27 March 1827 presented at the Plinian his own discovery that black spores found in oyster shells were the eggs of a skate leech. One day, Grant praised Lamarck's evolutionary ideas. Darwin was astonished by Grant's audacity, but had recently read similar ideas in his grandfather Erasmus' journals.[22] Darwin was rather bored by Robert Jameson's natural history course which covered geology including the debate between Neptunism and Plutonism. He learned classification of plants, and assisted with work on the collections of the University Museum, one of the largest museums in Europe at the time.[23]This neglect of medical studies annoyed his father, who shrewdly sent him to Christ's College, Cambridge, for a Bachelor of Arts degree as the first step towards becoming an Anglican parson. As Darwin was unqualified for the Tripos, he joined the ordinary degree course in January 1828.[24] He preferred riding and shooting to studying. His cousin William Darwin Fox introduced him to the popular craze for beetle collecting; Darwin pursued this zealously, getting some of his finds published in Stevens' Illustrations of British entomology. He became a close friend and follower of botany professor John Stevens Henslow and met other leading naturalists who saw scientific work as religious natural theology, becoming known to these dons as "the man who walks with Henslow". When his own exams drew near, Darwin focused on his studies and was delighted by the language and logic of William Paley's Evidences of Christianity.[25] In his final examination in January 1831 Darwin did well, coming tenth out of 178 candidates for the ordinary degree.[26]Darwin had to stay at Cambridge until June. He studied Paley's Natural Theology or Evidences of the Existence and Attributes of the Deity, which made an argument for divine design in nature, explaining adaptation as God acting through laws of nature.[27] He read John Herschel's new book, which described the highest aim of natural philosophy as understanding such laws through inductive reasoning based on observation, and Alexander von Humboldt's Personal Narrative of scientific travels. Inspired with "a burning zeal" to contribute, Darwin planned to visit Tenerife with some classmates after graduation to study natural history in the tropics. In preparation, he joined Adam Sedgwick's geology course, then travelled with him in the summer for a fortnight, in order to map strata in Wales.[28]Voyage of the BeagleFor more details on this topic, see Second voyage of HMS Beagle.Route from Plymouth, England, south to Cape Verde then southwest across the Atlantic to Bahia, Brazil, south to Rio de Janeiro, Montevideo, the Falkland Islands, round the tip of South America then north to Valparaiso and Callao. Northwest to the Galapagos Islands before sailing west across the Pacific to New Zealand, Sydney, Hobart in Tasmania, and King George's Sound in Western Australia. Northwest to the Keeling Islands, southwest to Mauritius and Cape Town, then northwest to Bahia and northeast back to Plymouth.The voyage of the Beagle, 1831–1836After a week with student friends at Barmouth, Darwin returned home on 29 August to find a letter from Henslow proposing him as a suitable (if unfinished) gentleman naturalist for a self-funded supernumerary place on HMS Beagle with captain Robert FitzRoy, more as a companion than a mere collector. The ship was to leave in four weeks on an expedition to chart the coastline of South America.[29] Robert Darwin objected to his son's planned two-year voyage, regarding it as a waste of time, but was persuaded by his brother-in-law, Josiah Wedgwood, to agree to (and fund) his son's participation.[30] Darwin took care to remain in a private capacity to retain control over his collection: the ship's surgeon Robert McCormick expected to be the official naturalist.[31]After delays, the voyage began on 27 December 1831; it lasted almost five years. As FitzRoy had intended, Darwin spent most of that time on land investigating geology and making natural history collections, while the Beagle surveyed and charted coasts.[7][32] He kept careful notes of his observations and theoretical speculations, and at intervals during the voyage his specimens were sent to Cambridge together with letters including a copy of his journal for his family.[33] He had some expertise in geology, beetle collecting and dissecting marine invertebrates, but in all other areas was a novice and ably collected specimens for expert appraisal.[34] Despite suffering badly from seasickness, Darwin wrote copious notes while on board the ship. Most of his zoology notes are about marine invertebrates, starting with plankton collected in a calm spell.[32][35]
On their first stop ashore at St Jago in Cape Verde, Darwin found that a white band high in the volcanic rock cliffs included seashells. FitzRoy had given him the first volume of Charles Lyell's Principles of Geology which set out uniformitarian concepts of land slowly rising or falling over immense periods,[II] and Darwin saw things Lyell's way, theorising and thinking of writing a book on geology.[36]
When they reached Brazil Darwin was delighted by the tropical forest,[37] but detested the sight of slavery.[38] McCormick left the ship at this point, feeling that Darwin had supplanted him as naturalist.[31]
The survey continued to the south in Patagonia. They stopped at Bahía Blanca, and in cliffs near Punta Alta Darwin made a major find of fossil bones of huge extinct mammals beside modern seashells, indicating recent extinction with no signs of change in climate or catastrophe. He identified the little-known Megatherium by a tooth and its association with bony armour which had at first seemed to him like a giant version of the armour on local armadillos. The finds brought great interest when they reached England.[39][40]
On rides with gauchos into the interior to explore geology and collect more fossils, Darwin gained social, political and anthropological insights into both native and colonial people at a time of revolution, and learnt that two types of rhea had separate but overlapping territories.[41][42] Further south he saw stepped plains of shingle and seashells as raised beaches showing a series of elevations. He read Lyell's second volume and accepted its view of "centres of creation" of species, but his discoveries and theorising challenged Lyell's ideas of smooth continuity and of extinction of species.[43][44]
On a sea inlet surrounded by steep hills, with high snow-covered mountains in the distance, someone standing in an open canoe waves at a square-rigged sailing ship, seen from the front
As HMS Beagle surveyed the coasts of South America, Darwin theorised about geology and extinction of giant mammals.
Three Fuegians on board, who had been seized during the first Beagle voyage and had spent a year in England, were taken back to Tierra del Fuego as missionaries. Darwin found them friendly and civilised, yet their relatives seemed "miserable, degraded savages", as different as wild from domesticated animals.[45] To Darwin the difference showed cultural advances, not racial inferiority. Unlike his scientist friends, he now thought there was no unbridgeable gap between humans and animals.[46] A year on, the mission had been abandoned. The Fuegian they had named Jemmy Button lived like the other natives, had a wife, and had no wish to return to England.[47]
Darwin experienced an earthquake in Chile and saw signs that the land had just been raised, including mussel-beds stranded above high tide. High in the Andes he saw seashells, and several fossil trees that had grown on a sand beach. He theorised that as the land rose, oceanic islands sank, and coral reefs round them grew to form atolls.[48][49]
On the geologically new Galápagos Islands Darwin looked for evidence attaching wildlife to an older "centre of creation", and found mockingbirds alli
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