Summary

Candolle discusses social plants. CD devises criterion for showing sociability not inherent.

Bentham’s buried seed plan rejected.

Summary

Plants that are social in the U. S. but are not so in the Old World.

Distribution of U. S. species common to Europe.

Gives Theodor Engelmann’s opinion on the relative variability of indigenous and introduced plants and notes the effects of man’s settlement on the numbers and distribution of indigenous plants.

Summary

Suggests affinities of the U. S. flora that he considers would be worth investigating. Wants to know the ranges of species in large and small genera.

Questions AG on naturalised plants; whether any are social in U. S. which are not so elsewhere and how variable they are compared with indigenous species. Would like to know of any differences in the variability of species at different points of their ranges and also the physical states of plants at the extremes of their ranges.

Summary

Comments on Wallace’s Malay Archipelago.

Summary

Thanks AG for the first part of his "Statistics [of the flora of the northern U. S.", Am. J. Sci. 2d ser. 22 (1856): 204–32; 2d ser. 23 (1857): 62–84, 369–403]

and for information on social and varying plants.

Would like to know number of genera of introduced plants in U. S.

Is surprised at some affinities of northern U. S. flora and asks for any climatic explanations.

Asks what proportion of genera common to U. S. and Europe are mundane.

Is glad AG will work out the northern ranges of the European species and the ranges of species with regard to size of genera.

Summary

Relieved by Wallace’s letter.

At work on introductory essay to Flora Tasmaniae.

European plants naturalised in Australia are almost all adapted to invading disturbed ground.

JDH supports Asa Gray against Alphonse de Candolle as foreign member of Royal Society.

Summary

At Asa Gray’s request, writes what he knows about Pontederia cordata.

Summary

Sends plant specimens.

He and Thiselton-Dyer, working on with Nepenthes, have independently found the spiral vessels going to the gland. CD’s view that the glands are secretory organs is suggestive. When Nepenthes is as much done as CD wants,

he will turn to Cephalotus and Sarracenia.

Summary

Sends results of his observations on Nepenthes. Would be grateful for any hints for further observations.

Summary

Replies at length to JDH’s worried reaction to his comments on lowness of Australian plants. CD distinguishes between "competitive highness", i.e., which fauna would be exterminated and which survive if two faunas were placed in competition, and ordinary "highness" of classification.

Summary

The signatories warn the RHS that in offering prizes for collections of specimens of wild English plants, the Society will cause serious injury to varieties already threatened without any real promotion of scientific botany.

Summary

Sends his review of Insectivorous plants in the Pall Mall Gazette of Vienna.

Summary

Sends "Ginger Beer Plant", a seed that assists the fermentation of ginger beer. [Also enclosed are instructions for making ginger beer dated, presumably erroneously, 18 Oct 1881.]

Summary

Enthusiasm for Henry George’s Progress and poverty. Considers it to rank with Adam Smith’s work. His own work on the land question [Land nationalisation (1882)].

Summary

Sending Drosera plants by post instead of rail because they are rotting.

Summary

Offers notes and reflections on Variation.

Not convinced by Pangenesis, particularly its dependence on the Cytisus [graft hybrid] examples [ch. 27 and ch. 11].

What a book could be written on the application of natural history to man! Gives examples of inheritance in man.

Summary

Gives directions for growing plants he has sent and corrects CD’s taxonomy.

Summary

On GJR’s work on mental evolution in animals. Emphasises "love" among animals.

Comments on stimulation of plants.

On pleasure and pain.

Summary

JDH and Oliver impressed with CD’s observations on gyratory motion of plants.

CD pleased with Bentham’s Linnean Society address on the reception of Darwinism [J. Proc. Linn. Soc. Lond. 7 (1863): xi–xxix].

JDH’s social "dogma": "Brains x Beauty = Breeding + wealth".

[Dated 9 June by JDH.]