"Life and Letters," I.page 346.) This research would have fully occupied a less methodical workman, and even to those who saw him at work it seemed his whole occupation.

Thus (to quote a story of Lord Avebury's) one of Mr.Darwin's children is said to have asked, in regard to a neighbour, "Then where does he do his barnacles ?" as though not merely his father, but all other men, must be occupied on that group.
Sir Joseph Hooker, to whom the first letter in this chapter is addressed, was good enough to supply a note on the origin of his intimacy with Mr.Darwin, and this is published in the "Life and Letters." (Chapter II./9.

Ibid., II., page 19.

See also "Nature," 1899, June 22nd, page 187, where some reminiscences are published, which formed part of Sir Joseph's speech at the unveiling of Darwin's statue in the Oxford Museum.) The close intercourse that sprang up between them was largely carried on by correspondence, and Mr.Darwin's letters to Sir Joseph have supplied most valuable biographical material.

But it should not be forgotten that, quite apart from this, science owes much to this memorable friendship, since without Hooker's aid Darwin's great work would hardly have been carried out on the botanical side.