Summary

Plans to meet CD in town.

Summary

Hopes they might meet as WDF has to come to town.

Summary

Discusses crossed varieties of sheep and ducks.

Summary

Has quoted WDF on crossing white and slate muscovy ducks [Variation 2: 40]. When not crossed, do these breed true?

Will also quote him on Mr Woodd’s white ewes that produced black lambs by a ram with only black spots [Variation 2: 30].

Summary

Has just finished new editions of Descent

and Coral reefs.

Is working on a book almost wholly on Drosera; thinks he has made some discoveries.

Will never have strength and life to complete more of the series of books related to Origin.

Summary

CD’s father has given him £200 to settle his debts.

He is delighted by a magnificent anonymous gift of a microscope.

Sees a good deal of the Henslows who are expecting a child soon.

CD still talks of the "Canary scheme"; he is learning Spanish.

Summary

Thanks WDF for specimens and his great help to CD in his work on variations in young and adult ducks and poultry. Has found feet of tame adult ducks weigh twice as much as those of wild ones.

Summary

Discusses instinct in ducks and turkeys.

Reports a case of the inheritance of an acquired characteristic in a pig.

Summary

Writes following his visit to WDF.

Mentions fossils Fox has collected.

News of Albert Way.

Hensleigh Wedgwood has resigned his post because of scruples about taking oaths.

Summary

CD has been so ill they must discourage visit by WDF. Recovering slowly with new treatment.

Summary

Will not pass through London, so will not be able to call at Down.

Summary

Thanks WDF for his offer of assistance in collecting varieties of poultry. Describes his needs. He will raise his own pigeons.

Often doubts whether, despite all help, the problem of species will not overpower him.

Summary

Congratulates WDF on his marriage,

reminisces about Cambridge and early entomology. Now neglects entomology for geology.

Describes Concepción after earthquake.

Hopes to cross Cordilleras before they leave South America in September.

Summary

Invites WDF to Down.

His stomach now so bad he cannot stay, even with close relations, for more than half an hour at a time.

Summary

Attacks [on Origin] are "hot and heavy". Adam Sedgwick and William Clark at Cambridge Philosophical Society opened a battery. J. S. Henslow defended in grand style.

Slow progress on bigger book.

Summary

Reports on the effects of inbreeding in dogs and the results of crossing Canada and common geese.

Summary

CD’s son Horace wishes to continue at Easton and Anderson’s Works. CD trusts they will not bind him to long hours of work as this would be against medical advice.

Summary

Describes his method of putting young poultry to death.

Asks questions arising from WDF’s reply about crossed mongrels.

Summary

Several seeds have come up after 65–70 days’ immersion in salt water.

Has now a fine collection of pigeons and intends to cross them systematically.

Needs information on mongrel crosses of animals of all kinds.