Only proof that internal organs and bones were intermediate would convince CD of the possibility of the astounding [deer] hybrid WDF has reported.

Has WDF positive knowledge that common ganders do not always turn white?

Has begun his larger books. New editions of Origin will appear.

What is right and wrong in it will soon be sifted.

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.

Has WDF ever observed musk ducks laying eggs in high places? The case bears on retention of aboriginal habits.

Also wants data on period of gestation of dog breeds. [See Variation 1: 30.]

The hybrid case is most curious, if true. So many have tried to get hybrids from hare and rabbit.

Has done little regular work – correspondence on Origin has been gigantic.

Has amused himself working on power of Drosera to catch flies.

Writes of family photographs and health.

Is at work on an enlarged [3d] edition of Origin.

Thanks WDF for an inkstand that keeps ink from getting muddy.

Asks if WDF can verify truth of a statement that white sows carry their young for a longer or shorter time (CD forgets which) than other colours. Presumes it is false, "but many odd peculiarities are correlated with colour".

Family news.

Henslow’s death a sad loss. Leonard Jenyns will write a biography.

Asks if WDF has ever crossed wild and common turkeys. Would like to quote his authority [see Variation 1: 292].

Also curious whether WDF has known the so-called japanned peacock to appear from common peacock [Variation 1: 290].

Thanks WDF for interesting letter about turkeys. Would be grateful for information on fertility of the hybrids.

WDF’s information on turkeys will be useful when CD resumes his half-finished volume [see Variation 1: 292].

Illness in the family.

Would like to go to Cambridge [for BAAS meeting]. Reminisces about his student days.

Pleased that WDF likes his book [Orchids]. At one time CD agreed with Lyell that he was an ass to publish it.

Working on dimorphism and sensibility of other plants.

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.

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].

If WDF should hear what ram was put to the ewes, CD would like to add it [see Variation 2: 30].

Will add "cautiously" that WDF believes white and slate muscovy ducks breed true [Variation 2: 40].

Thanks WDF for authentic details of number and colour of lambs [Variation 2: 30].

Complains of his eczema.

Health has been poor but eczema is improved.

A "squib" about Owen and Huxley on the brain has appeared in Public Opinion [3 (1863): 497–8].

His bad health has caused him to return to Malvern.

Emma cannot find the gravestone of their child, Anne. Asks WDF whether he can remember its location.

The Copley Medal is considered a great honour, but such things make little difference to CD, except for the several kind letters he received. It shows that natural selection is making some progress.

His health is poor.

Work is crawling on Variation;

occasional botany recreative.

Bad health during last six months has prevented scientific work.

News of family.

Family news. Describes [final] illness of Susan Darwin [d. 3 Oct 1866]. CD’s health better.

Making rapid progress on Variation.

Has heard of hybrids between moths mentioned by WDF.

Work on [4th] edition of Origin has delayed Variation.