Summary

Movement in plants.

Dimorphism.

Would welcome FM’s opinion of Pangenesis.

Summary

Thanks CD for sending him copy of Variation.

Describes results of his brother’s [August Müller] experiments on effect of climate on maize.

Like ancestors of horses, young tapir is also striped.

Summary

His opinion of Pangenesis.

On relative proportion of sexes in marine animals [sthg missing!?] Crustacea.

Sexual differences.

Music of Cicadae.

Summary

Is glad FM approves of a translation of Für Darwin.

Hopes FM will think well of Pangenesis.

Sexual differences in insect auditory and stridulating organs.

Read FM’s paper on Balanus with great interest ["On Balanus armatus", Ann. & Mag. Nat. Hist. 4th ser. 1 (1868): 393–412].

Summary

Again thanks CD for trouble in arranging for translation of Für Darwin.

Sends addition answering critics of his idea of insect metamorphosis [see Möller ed. 1915–21, 1: 259].

Agrees with Charles Lyell’s suggested English title "Facts and arguments in favor of Darwin", although perhaps more accurate to call it "Darwinism tested by Carcinology" or "Carcinology as bearing on the origin of species".

Says any profit should go to CD for his trouble and expense with the translation.

Thanks for seeds of Eschscholtzia.

Gives observations on number of climbing plants, including Dilleniacea, Marantacea, Catasetum.

Summary

FM’s additions for English edition [1869] of Für Darwin.

Dimorphic plants.

Summary

Will repeat CD’s experiments on dimorphic and trimorphic plants.

Auditory organs of Orthoptera; stridulation in lamellicorn beetles.

Summary

Writes on various observations and discoveries on dimorphic and trimorphic plants.

Summary

Delay in translating Für Darwin.

Comments on plan to repeat CD’s experiments on illegitimate offspring.

FM’s observations on stridulation.

Summary

Gives details of some crossing experiments with Eschscholzia.

Describes the grass Streptochaeta, which FM believes to be a primitive grass.

Relates some observations on maize that are well explained by Pangenesis.

Summary

Translation of Für Darwin has been published [Facts and arguments for Darwin (1869)].

Discusses dimorphic plants, commenting on FM’s observations on Oxalis.

Is greatly interested in Eschscholzia, which seems somewhat more self-sterile in Brazil than in England.

Thinks FM’s grass is "most wonderful".

Summary

Describes experiments with sterility in Abutilon.

Describes hermaphroditism in a wild Begonia in Brazil.

Has been observing humble bees on Salvia.

Summary

On English edition of Für Darwin; CD’s gratitude and admiration.

Summary

FM much gratified by the appearance of Für Darwin translation.

Discusses dimorphism in Rubiaceae.

Summary

Reports reviews of Facts and arguments for Darwin [1869].

Is preparing for a French translation of Orchids.

The case of Abutilon which is sterile with some individuals is remarkable.

Has sent FM’s account of the monstrous Begonia to the Linnean Society.

Summary

Wants observations on a Papilio to see whether ticking noise is confined to one sex.

Experiments on self-sterility.

Will send copy of his orchid paper ["Fertilisation of orchids", Collected papers 2: 138–56].

Eschscholzia when self-fertilised, produced pods.

Summary

Describes experiments to test the fertility of Abutilon, which appears self-sterile,

and briefly mentions dichogamy in Eschscholzia.

Summary

Role of humming-birds in plant fertilisation.

Alexander Agassiz has visited Down.

Sales of Facts and arguments for Darwin.

Encloses copy of T. H. Farrer letter [7015] and observations on the self-sterility of Eschscholzia.

Summary

Discusses dimorphic and trimorphic plants; mentions especially Rubiaceae and a dimorphic monocotyledon.

Notes observations on the monstrous male flowers of Begonia,

and on self-sterile plants.

Summary

Sends specimens of Passiflora and seeds for T. H. Farrer [letter enclosed with 7188].