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Charles Waring Darwin, who died when he was 18 months old (6 December 1856 – 28 June 1858), was the last of the children of Charles and Emma Darwin, their tenth child and sixth son. He was born and died at the family home of Down House in Kent. There is consensus amongst academics that he had Down's syndrome, which at the time had not been medically described. The evidence is firstly, a photograph by his brother William Erasmus Darwin, of Charles Waring and his mother, which shows a head shape characteristic of Down's syndrome. Secondly, the family's observations of the child; It was noted by his sister Henrietta, in her biography of their mother, that the child was born "without the full share of intelligence". Charles Darwin noted that even though "he was backward in talking & walking" he was nevertheless "intelligent & observant". This diagnosis is also consistent with the well known risk factor for Down's Syndrome of mother's age (Emma was 48 years old at the time of his birth).〔http://bloodjournal.hematologylibrary.org/cgi/content/full/105/6/2614-a〕 Darwin already feared that the consanguinity of his and Emma's lineage — she was his first cousin — had contributed to his children's constitutional weakness, a fear that would find its expression in ''The Origin of Species'' in which Darwin rails against the "evil" effects of inbreeding and lauds the good effects of crossing. Charles Waring succumbed to scarlet fever and died at the age of about 18 months.〔 Darwin wrote in his personal 'journal', "June 28 Poor dear Baby died."〔Darwin, C. R. 'Journal' (1809-1881). CUL-DAR158, p. (37 recto, 1858 )〕 The baby's illness and early death kept Darwin from attending the first publication of Darwin's theory at the joint reading of papers by Alfred Russel Wallace and himself titled ''On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection'' at the meeting of the Linnean Society on 1 July 1858. He is buried in St Mary the Virgin Churchyard, Downe, Kent Nearby is Down House, the home of the Darwin family. ==References== * * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Charles Waring Darwin (infant)」の詳細全文を読む スポンサード リンク
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