Sends a list of plants with stamps to pay the Hitcham girls who will collect seeds for him.

Describes his work with seeds in salt water.

For his experiments he would like seeds collected from plants that grow both near Hitcham and in the Azores.

Explains again what JSH should do in marking "close species".

Answers queries on Azores fauna and flora.

Notes on the interbreeding of different races of silkworm. [Forwarded with explanatory note by Edward Blyth.]

Has named 35 species of grasses.

Seed-salting continues.

Thanks JSH for seeds.

Clarifies his request about marking [London] catalogue [of British plants] – JSH is to mark those he thinks really are species, but which are very closely allied to some other species.

No summary available.

Australian Leguminosae problem: of 900 species not ten are common to southwest and southeast. No migration; hence either creation or variation.

Himalayan thistles: graded intermediates between large and small English species, "shakes species to their foundations". Similarity of CD’s and his views on species.

No summary available.

Asks for advice on establishing a control group in his experiments to produce sports and varieties of Lychnis diurna.

Seeks seeds of wild Dianthus for hybridising and producing varieties.

Returns CD’s list of Azores plants with information on the distribution of the species added. Encloses a list, extracted from CD’s list, of those plants common to Europe and the Azores that were probably not introduced by man.

Discusses crustacea analysis to be done by Bell and others, together with labourers’ horticultural show organised by JSH.

No summary available.

Sends a list of 22 plants that grow at Hitcham and in the Azores and are, according to H. C. Watson, least likely to have been imported [by man]. Will pay the little girls of Hitcham liberally to collect the seeds for his experiments.

CD experiments: sowing seeds in fields; "breaking" seeds’ constitution with coloured light; plant hybridisation. Compiling works on hybridism.

Respect for W. B. Carpenter.

Note on "nectar secreting" to Gardeners’ Chronicle [Collected papers 1: 258–9].

Has read a paper, presumably by JDH, using the Madeiran flora to argue against Forbes’s doctrine.

JDH asked how far CD will go in attributing common descent; he intends to show "the facts & arguments for & against the common descent of species of same genus; & then show how far the same arguments tell for or against forms, more & more widely different".

Parcels sent to Down by coach may get lost.

Discusses how best to simulate the light at a particular point on the earth’s surface using coloured glass; considers sunlight as composed of three "principles", varying in proportion according to latitude, which affect germination, lignification, and floriation.

Congratulations to JL on finding musk-ox fossil.

Thanks JSH for all he has done. His botanical little girls are marvellous. His marking of the list of dubious species is what CD wanted. Explains that he wanted to ascertain whether closely allied forms belong to large or small genera.

Invites JSH to dine at CD’s brother’s house in London.