Gratified by CD’s praise.

Describes plan of his new book [Island life (1880)].

Efforts to secure a post.

Indicates portions of Island life that will interest CD. Explanation of the geological climate is the foundation stone of the book.

Hooker’s approval of the theory of Australian and New Zealand floras.

Response to CD’s notes [on Island life]:

1. On relation of paucity of fossils to coldness of water;

2. Cessation of the glacial period;

3. Rate of deposit and geological time;

4. The importance of preoccupation (by plants) in relation to plants arriving later.

Charge of speculative explanations is just.

Defends plausibility of migration of plants from mountain to mountain.

Thanks for book [Movement in plants].