The Correspondence of Charles Darwin provides, for the first time, full, authoritative texts of all known and available letters to and from Charles Darwin. The letters are accompanied by detailed explanatory footnotes and supplementary materials, and offer unparalleled insight into Darwin’s experiments, thoughts, friendships, and family life. Volume 13 of this continuing series contains letters for 1865, when Darwin published his long paper on climbing plants and continued working on his book, The Variation of Plants and Animals under Domestication. In this year, Robert FitzRoy, former captain of HMS Beagle, committed suicide; Darwin’s great friend Joseph Dalton Hooker became director of the Royal Botanic Gardens, Kew; and Charles Lyell and John Lubbock quarrelled over an alleged incident of plagiarism. The volume also contains a supplement of over 100 letters discovered or redated since the series began publication, including a fascinating collection of letters written when Darwin was 12.