Summary

Compliments Origin.

Sends extract about a waterplant to illustrate CD’s points about the means of dispersal in geographical distribution.

Summary

Was gratified "beyond measure" by AN’s comments on his pigeon chapter [in Variation] in the [Zoological] Record [5 (1868): 94–6]. AN is the first man capable of forming a judgment who seems to have thought anything of this part.

Summary

Sends information on the distribution of various species in the U. S.

Summary

Asks who the gentleman is who is studying cattle skulls; RS has some that he would like examined.

Summary

Is glad to hear that CD is pleased with AN’s notice of his work on pigeons.

He will not soon forget the pleasure of his visit to Down.

Summary

About a dog she supposes was suckled by a cat, since it washes its face with its paws.

Summary

Louis Agassiz’s ill health means AG will not get an answer to CD’s query from him. Suggests CD ask Agassiz’s son, Alexander.

Has no details about the origin of the cat-like behaviour of his dog.

Summary

Draws CD’s attention to a paper by Maurice Girard containing observations on the fertilisation of Orchidaceae by two species of Longicornia [Ann. Soc. Entomol. France 9 (1869): xxxi–xxxii].

Summary

Hopes CD is coping with the very hard winter.

Summary

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

Summary

Sends CD some notes on the habits of the "American Blight Bird" in New Zealand.

Summary

Notes the differences in haemoglobin between species; this proves, to WP, that natural selection does not act only on morphological development.

Remarks on the differences and similarities in the effects of prussic acid on different groups of animals.

Questions CD on his early education and influences.

Summary

Encloses his letter to GJ [6885], which was returned.

Summary

Comments on effects of prussic acid on different individuals of the same species and other physiological research by WP.

Provides information about his studies in Edinburgh and Cambridge and qualifications he had for Beagle voyage. Describes influence of R. E. Grant and J. S. Henslow.

Summary

Responds to note about the MS [Descent] with great interest and promises to obey his instructions. [See 7124.]

Summary

Invites WDF to visit.

Describes activities of his children.

Summary

Moritz Wagner is going to attack selection theory in his new book on his travels in America [Naturwissenschaftliche Reisen im tropischen Amerika (1870)].

K. G. Semper may attack CD’s theory of coral islands.

Summary

Has read the notes on Rond [Round] Island which he owes to JDH. What an enigma its flora and fauna present, especially the problem of monocotyledons! Asks JDH’s opinion.

A new book on St Helena confirms CD’s observations.

Summary

Thanks for sending him a hybrid.

Summary

Thanks JO for his The Andes and the Amazon.

Is sorry he has failed to get any information on the horse’s tooth.