did he write any books?
"On the Origin of the Species", "Journal and Remarks" , and "The Structure and Distribution of Coral Reefs"
Charles Darwin

When FitzRoy's "Narrative" was published in May 1839, Darwin's "Journal and Remarks" was such a success as the third volume that later that year it was published on its own. Early in 1842, Darwin wrote about his ideas to Charles Lyell, who noted that his ally "denies seeing a beginning to each crop of species".

Darwin's book "The Structure and Distribution of Coral Reefs" 
why is incomplete dominance not evidence for the blending theory of inheritance UNANSWERABLE what is pangenesis theory? According to this theory  each part of the parent's body emitted tiny particles called gemmules, which migrated through the body to contribute to that parent's gametes, their eggs or sperms. who came up with this theory? Charles Darwin. who was he? An English naturalist, geologist and biologist, best known for his contributions to the science of evolution. where was he from? Shrewsbury, Shropshire. when was he born? 12 February 1809. who did he marry? Emma Wedgwood.
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Charles Darwin [SEP] Geology books, barnacles, evolutionary research
Early in 1842, Darwin wrote about his ideas to Charles Lyell, who noted that his ally "denies seeing a beginning to each crop of species". Darwin's book "The Structure and Distribution of Coral Reefs" on his theory of atoll formation was published in May 1842 after more than three years of work, and he then wrote his first "pencil sketch" of his theory of natural selection. To escape the pressures of London, the family moved to rural Down House in September. On 11 January 1844, Darwin mentioned his theorising to the botanist Joseph Dalton Hooker, writing with melodramatic humour "it is like confessing a murder".