Sends a skeleton of a Bengal jungle cock.

Has never heard of trained otters breeding in captivity.

Introduced domestic rabbits are confined to the ports of India.

Canaries and other tame finches and thrushes brought into India do not breed well.

Origin of the domestic canary. Tendency of domesticated birds to produce "top-knot" varieties.

The tame geese of lower Bengal are hybrids; those of upper Bengal are said to be pure Anser cygnoides.

Wild Anser cinereus occur in flocks in the cold season.

Discusses at length different breeds of domestic cats and possible wild progenitors. Wild and domestic cats occasionally interbreed. The Angora variety breeds freely with the common Bengal cat and all stages of intermediates can be found.

Believes pigeons have been bred in India since remote antiquity.

Discusses whether mankind is divided into races or distinct species.

[CD’s notes are an abstract of this letter.]

Morning with H. C. Watson; discussed problems of inferences from buried seeds.

Has left a book from Henslow for JDH at Athenaeum.

When Asa Gray wrote, did he send marked sheets [of his Manual of botany]?

Has just made out "new & wonderful" specific character between two of his pigeon breeds.

Gives names of German dealers who provide seed of superior quality.

Is having difficulties marking close species on the list of British plants.

In all his attempts to advance geographical botany he is stopped by the "application and signification of the word ""species"" " the use of which is both "indefinite and variable". He encloses his list of "Categories of Species".

When JDH goes to Germany, will he ask seed men if their marvellous true breeding lines are the result of selection.

Sends a catalogue of plants [missing] with the close species marked.

Recommends publication of W. B. Carpenter’s paper on Orbitolites [Philos. Trans. R. Soc. Lond. 146 (1856): 181–236]. Discusses style and the cost of the plates.

Gives extracts from a letter by Thomas Hutton.

Rabbits are kept (generally by Europeans) in the NW. provinces and breed freely. Canaries are not well adapted to the climate. Reports on domestic cats and pigeons of the area. EB gives references to further information on cats, pigeons, and silkworms.

[CD’s notes are an abstract of this letter.]

Reports on his collection of skeletons of young and adults of various breeds of fowls and specimens still needed.

Asks JSH to identify an umbellifer.

Describes his efforts to compare number of seeds of wild and cultivated plants.

Asks that more wild celery be collected and seeds counted. Seeks to verify whether "most typical form produces most seed" and whether cultivation lessens fertility.

Close species in large and small genera.

Artificiality of botanical classification.

"Close" species in large and small genera.

Alphonse de Candolle on geographical distribution [Géographie botanique raisonnée (1855)].

Species variability.

On geographical distribution of plants. Plant systematics and natural classification.

Thanks for WBT’s offer to supply carcasses of good poultry breeds. Encloses list [missing] of birds in which he is interested.