He is not sure whether he has seen Subularia flowering above the water, but thinks it probably is an aerial flowerer, at least sometimes.

Has been unable to find an anonymous book on pigeons in the University Library.

CD, attempting to clarify debate, states more of his position. External conditions cause "mere variability". Formation of species due to selection. Relation of an organism to its associates far more important than external conditions.

The Kentucky cave insects (Adelops) are evidently identical to European species of the same genus, some of which are cave insects, others found in damp, dark places.

Variability of naturalised plants.

Distribution of Arctic/alpine plant species.

Limits to the northern range of plants.

Writes about suitable mourning clothes and sale of house [Petleys, after death of Sarah Elizabeth Wedgwood I].

Thanks for promise of rabbit carcase and for information about rabbit at Zoological Society’s Garden.

Requests correspondent to ask Mr Vivian for carcase of an old "Creve-coeur" cock. CD has found that the skull in this breed is modified to support its comb.

Responds to CD’s query on Subularia and Limosella. There are discrepancies among authorities on whether Subularia flowers out of water. Limosella certainly flowers out of water.

Asks GB for help in clearing up his problems about Leguminosae, in connection with his "wild bit of speculation on the crossing of plants" [see Natural selection, p. 71].

Letter from school with instructions where to put away his belongings at home.

Has received some poultry from various parts of the world.

CD is glad that WBT is describing the birds that he acquires.

Thanks GB for information on Leguminosae, especially about those with apetalous flowers and almost without anthers.

Defers a visit with Lieutenant Blakiston; "my wife is out of health & expects her confinement in a few weeks, & I cannot possibly receive any one here or leave home . . ."

Variability of certain features within insect genera.

Discusses shipment of skins of carrier pigeons.

No summary available.

Needs more time for reviewing Pole's paper [see JH's 1856-10-12].

Is sending in JH's report on Pole's paper [see JH's 1856-11-9].

Thanks the council of the R.S.L. through GS for the gift of a portrait of Nicholas Copernicus.

Gives particulars of his vision, which WP characterizes as di-chromic. Recounts experiments with red glass sent by JH to WP. Offers to visit if JH wants personal interview.

Thanks JH for note explaining colored glasses and 'positive' colors, saying WP only had a chance to do experiments with 'negative' colors thus far. Accepts JH's invitation to visit.