1861:
Publication of the third edition of the "Origin" (2000 copies).
"I am going to write a little book... on Orchids, and to-day I hate them worse than everything."
1862:
Publication of the book "On the various contrivances by which Orchids are fertilised by Insects".
1865:
Read paper before the Linnean Society "On the Movements and Habits of Climbing plants". (Published as a book in 1875.)
1866:
Publication of the fourth edition of the "Origin" (1250 copies).
1868: