Summary

Hildebrand’s paper on trimorphism in Oxalis ["Über den Trimorphismus in der Gattung Oxalis", Monatsber. K. Preuss. Akad. Wiss. Berlin (1866): 352–74].

Problems of explaining brightly coloured, attractive seeds.

Haeckel has visited Down.

FM’s climbing plants paper is printed [J. Proc. Linn. Soc. Lond. (Bot.) 9 (1867): 344–9].

Summary

Asks for the name of a hummingbird.

Summary

L. Agassiz’s evidence [for glaciation of America] is very weak.

Thanks AG for arranging for American edition of Variation, but doubts that the book will be successful.

Has found no differences in pollen of Rhamnus so cannot conjecture whether it is dimorphic.

The common oxlip of England is certainly a hybrid between the primrose and the cowslip whereas Primula elatior is a good species.

Reports experiments on the relative vigour of seedlings from cross- and self-fertilised plants.

Summary

Asks botanical readers to inform him "whether in those monoecious or dioecious plants, in which the flowers are widely different, it has ever been observed that half the flower, or only a segment of it, has been of one sex and the other half or segment of the opposite sex, in the same manner as so frequently occurs with insects?"

Summary

The apparent difference in arm lengths of compositors is due to a drooping shoulder. File-makers stand in a peculiar position and call one of their legs the hind leg.

Summary

Asks for reference to EB’s article about tame deer on island in Aral Sea.

Summary

Thanks for observations on dimorphic plants. Dimorphism prevalent in certain groups throughout the world.

Retarded fertilisation in certain orchids.

Summary

A confounded cock ground the crimson seeds up so CD could not find them in its excrement. CD is puzzled by how seeds can be disseminated if merely ground up by birds. Perhaps like acorns from seeds accidentally dropped by birds?

A woodcock’s leg with dry clay clinging to it, from which CD has grown a microscopical rush.

Spencer would have been wonderful if he had trained himself to observe more.

On New Zealand flora and connection with Australia.

Difficulty of speculating about the amount of organic chemical change at different periods.

Summary

Orders Richard Owen’s Anatomy of vertebrates [1866–8],

subscribes to Annals and Magazine of Natural History,

and orders three back numbers of Medical Times and Gazette.

Summary

Expresses gratification that JVC is to undertake new translation and revision of German edition of the Origin.

Has heard many complaints about Bronn’s translation. JVC would be justified in omitting Bronn’s appendix.

Suggests additions and changes, including reference to C. W. v. Nägeli’s Entstehung und Begriff [1865], though he disagrees with it.

Summary

Thanks WBT for help with woodcuts [for Variation].

Has returned WBT’s curious feathers.

Summary

Will call on Wallace tomorrow (Saturday) at 10.

Summary

Discusses beauty of birds and butterflies.

Summary

Asks if he may call on Sunday at 10 o’clock.

Summary

Has read FM’s paper on sponges ["Über Darwinella aurea", Arch. Miskrosk. Anat. 1 (1865): 344–53] with interest.

Has also read FM’s work on the metamorphoses of Peneus [Ann. & Mag. Nat. Hist. 3d ser. 14 (1864): 104–15], an interesting and important embryological discovery.

CD regards Louis Agassiz’s opinions as valueless.

Summary

A letter from Asa Gray informs CD that Ticknor & Fields will not publish a new edition of Origin to compete with Appleton’s unrevised edition. They recommend sending copies of the English edition for the American market.

Summary

Gives details of enclosed MS on cool period. Mentions Hooker’s opposed "axis of the earth" view. Causes of glacial period are beyond CD; "cannot believe change in land and water being more than a subsidiary agent".

Summary

A report on his somewhat improved health.

Summary

F. Hildebrand, in his recent article [Bot. Ztg. 10 (1866): 73–8], describes what GH showed CD about Indigofera’s irritability.

Summary

Makes arrangements to call.