Letter of recommendation stating his high opinion of John Scott.

W. H. Harvey’s dandelion case worth publishing.

Suspects the uniform Primula elatior JDH referred to is a distinct species.

Scott’s paper on Passiflora shows variability of reproductive systems.

Asks DO to draw diagram of Lythrum on board at Linnean Society for reference during the reading of CD’s paper.

Short reply to ARW’s long letter. Reaffirms belief in sexual selection.

Postscript on M.-J.-P. Flourens’ "little dull book against me" [Examen du livre de M. Darwin (1864)].

L. H. Palm [Über das Winden der Pflanzen (1827)] is better on climbing plants than H. von Mohl [Über den Bau und das Winden der Ranken und Schlingpflanzen (1827)].

Discusses fertilisation of flowers by bees. Thanks JTM for drawings.

John Scott preparing to leave soon.

Thanks for orchids.

Recovering from nine months’ illness.

Discusses fertilisation of Pulmonaria.

Family matters; CD’s feelings on death of FW’s son [James Mackintosh Wedgwood, 1834–64].

Has heard nothing about the Copley Medal. Is grateful for Hugh Falconer’s interest [see 4546].

Supplies details about circumstances of his voyage on the Beagle.

Does not believe that his sea-sickness was the cause of his subsequent ill-health.

Encloses the requested list of publications [see 4550].

Asks for names of plants mentioned in an article in Natural History Review ["South European Floras", n.s. 4 (1864): 369–84] so he can get seeds.

Also would like specimens of the two forms of Aegiphila.

Thanks for his book [Physical geology and geography of Great Britain, 2d. ed. (1864)].

Pleased that ACR’s glacial lake theory is progressing. New Zealand lakes support the view. Suggests he write to Charles Gould in Tasmania, calling his attention to glacial action.

Ernst Haeckel writes that young German scientists are enthusiastic for natural selection.

Did JDH write the article in Natural History Review on trees not producing flowers ["Botanical lesson books", (1864): 355–69]?

Encourages Harvey to publish on his "disagreeable" monster plants.

Thanks GB for specimens [of Aegiphila] and his information.

Discusses dimorphism in flowers. Describes his experiments.

If CD understood Nepenthes, he would understand every class of climbers.

Will DO observe whether leaf [of Nepenthes] with pitcher ever wound round a stick? CD’s plant is improving.

Thanks for praise [of Origin].

Comments on EH’s Die Radiolarien.

Grieved EH has suffered calamity [death of Anna Sethe Haeckel].

CD recovering from long illness.

Doing easy botanical work.

Mentions variability.

Discusses reception of CD’s views in Germany.

Notes and queries on climbing plants for JDH [? given to him by CD at their meeting of 24 July 1864].

JDH’s visit stimulates CD’s interest in his own work. Encloses list of queries on climbing plants. [Missing]