The correspondence in this volume reveals the two sides of Darwin's life in a new intensity. It opens with a tragedy, the death of Darwin's oldest and best loved daughter, Anne, and goes on to show how Darwin sought relief from his loss through his work, with a single-minded but increasingly weary commitment to the completion of his cirripede monographs. In September 1854, as soon as the final proofs of the last barnacle volume had been returned to...