Darwin-Hooker Letters : Letter from Darwin, C. R. to Hooker, J. D. on 2 July 1859 : 1r
'Darwin, C. R.'
Returns Hooker's proofs. He is so involved in Origin he cannot judge force of Hooker's arguments. Some detailed comments. Haldeman's old paper see 2470 clever, but does not have natural selection. Explaining adaptation has always seemed turning point of theory of natural selection.