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.

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.

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].

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.

Discusses dimorphism in flowers. Describes his experiments.

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

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]

Clarifies queries on climbing plants.

Scott would be very welcome at Down for a short visit.

Asks JDH to name a Bignonia.

Coming to end of climbing plants paper.

First draft of climbing plants paper is completed.

Nepenthes is a true climber.

Scott has visited Down.

Believes he gave JDH wrong address.

CD is not well enough to sit for Woolner.

Two Bignonia plants, which JDH does not distinguish as species, can be separated by differences in climbing and sensitivity behaviour.

Wants to write a non-quarrelsome reply to R. A. Kölliker ["Darwin’sche Schöpfungstheorie", Z. Wiss. Zool. 14 (1864): 174–86] in the Reader. Lyell opposes, but E. A. Darwin and Hensleigh Wedgwood support the idea.

CD continues to have trouble reconciling the Veitch’s names for Bignonia plants and Kew names.

Lyell and Falconer called on CD in London.

Pleased that Bentham is cautious about Naudin’s view of reversion. CD can show experimentally that crossing of races and species tends to bring back ancient characters.

Suggests Gärtner’s Bastarderzeugung [1849] be translated

and that Oliver review Scott’s Primula paper [J. Linn. Soc. Lond. (Bot.) 8 (1865): 78–126] for a future issue of Natural History Review.

Is working on Variation.

Huxley has answered Kölliker in Natural History Review [(1864): 566–80].

CD is correcting two of Scott’s papers; is convinced primrose and cowslip are two good species.