I want to know the answer to the following question:
What edition was the book in by the time of Darwin's death?
All the background I'm provided with is that "Lyell discussed arrangements with publisher John Murray III, of the publishing house John Murray, who responded immediately to Darwin's letter of 31 March 1859 with an agreement to publish the book without even seeing the manuscript, and an offer to Darwin of 2⁄3 of the profits.". Is that enough to answer the question?