Discusses his previous criticisms of EH’s Generelle Morphologie. Fears it will make enemies.

Discusses reception of descent theory in England.

Mentions EH’s trip to Canary Islands.

Thanks CD for new edition of Origin [4th ed. (1866)].

Comments on CD’s criticism of the harsh tone of Generelle Morphologie. Thinks he may have harmed himself but not the cause. Believes a radical reform of the science necessary, and since most scientists take a prejudiced view of the matter, a vigorous attack is essential.

Describes his travels in Canaries, Spain, and France.