Discusses JPMW’s paper on Bonatea [see 5411].

Mentions Robert Brown’s views on pollen.

Contributes to a memorial for Richard Dawes.

Describes his health.

Comments on a discussion of humming-birds by the Duke of Argyll [in The reign of law (1867)].

Encloses article by Henry Parker on the Duke’s book [Saturday Rev. 23 (1867): 82–4].

Discusses hybridisation in cowslip and primrose.

Mentions proposed visit.

Discusses the Duke of Argyll’s book [Reign of law (1867)].

Cites his own views on diversity of structure and beauty.

Encloses letter from Wallace. Sexual selection: evidence advanced by Wallace.

Discusses correlation of growth.

Comments on article in the North British Review [by Fleeming Jenkin].

Discusses the evidence from physics on the age of the earth.

[Four pages of the final letter are missing, but the draft is complete.]

Chapter 12 [of Variation] finished;

too late to include information on six-fingered men. Plans for book on man [Descent].

Mentions coral reefs of Tahiti.

Discusses volcanic islands; volcanoes of the Cordillera.

Thanks CL for comments [on Variation].

Thinks Pangenesis would be important step in biology if admitted as probable.

Introduction to French edition [of Origin] has injured the book.

Letter recommending V. O. Kovalevsky to a publisher.

Replies to CL’s further comments [on Variation].

Discusses direct action of the environment as a cause of variation.

Describes seeds transported in locust dung. Discusses other cases of transport and migration.

Suggestions on listing authors in the index [for Variation].

Discusses transport of frog spawn and young molluscs by birds.

Asks for index to Zoological Society’s Proceedings.

Mentions article on "Barbets" by PLS in Intellectual Observer [12 (1867–8): 241–6].

Thanks AG for information.

CD is obliged for a note by JS on crossing the Victoria regia, just received from Hooker; encourages JS to further experiments, saying there is much to be learned on self-fertilisation of plants.