by Richard William Nelson | May 30, 2010
In a letter to Sir Joseph Dalton Hooker, his closest friend in 1857, Charles Darwin confided, “I cannot swallow Man [being that] distinct from a Chimpanzee.” Chimp genetics, by extension of Darwin’s theory, were expected to be similar to humans. Charles Darwin writes in his Autobiography –
“My Descent of Man was published in Feb. 1871. As soon as I had become, in the year 1837 or 1838, convinced that species were mutable products, I could not avoid the belief that man must come under the same law.”
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by Richard William Nelson | May 9, 2010

Three years before the publication of The Origin of Species, the first Neanderthal fossil was discovered in Neander Valley, Germany. However, even Darwin questioned whether Neanderthals were human ancestors. More than a decade later, in The Descent of Man (1871), Darwin addressed his issue with the Neanderthal skull size –
“Nevertheless, it must be admitted that some skulls of very high antiquity, such as the famous one of Neanderthal, are well developed and capacious.”
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