Sends the revisions in the latest edition of Origin.

Thanks WBT for proofs of his new book [Pigeons (1868)].

Hopes he still intends to try the experiment with dyed pigeons.

Was surprised to hear of B. P. Brent’s death.

Wants information on sex ratios in domestic animals. Can WBT help?

Is much obliged that WBT will undertake tabulation of sex ratios in racehorses, greyhounds, and cattle.

Thanks WBT for tabulation of sex ratios in racehorses.

Would like to meet with WBT while in London.

For experiment on effect of male beauty, pigeons should be coloured on the breast.

Likes WBT’s review [of Variation] in the Field [31 (1868): 309, 350].

Awaits remarks on coloured pigeons and proportion of sexes.

Inquires about the colour of first plumage of poultry breeds and development of distinguishing features.

Inquires about plumage of poultry breeds.

Did not know of complex change of plumage. From WBT’s letter, CD thinks six weeks to two months old is the best period. Sends details of breeds and other particulars.

Would like information on the first plumage of poultry.

Asks about the differences in colour of plumage of adult male, female, and young birds. Suggests pile game as subject.

Asks about relative proportion of sexes in ducks and fowls.

Repeats request for information on colours of plumage of poultry breeds and asks for WBT’s facts on proportions of sexes.

Inquires about colour and development of plumage of poultry breeds. Is endeavouring to trace sexual differences throughout the animal kingdom.

Wants information on plumage of chickens

and table of sex ratios in greyhounds.

Thanks for greyhound table; interested in transmission of colour in greyhounds and relationship to sex.

Thanks for procuring eggs.

CD’s health has necessitated his leaving home.

Further queries on poultry plumage.

WBT’s visit to America.

Inquires about the differences in plumage between chicks and adults of certain poultry breeds. Is anxious to know whether the chick’s plumage closely approaches the adult’s in those breeds in which the sexes resemble each other in plumage.