Furnishes CD with more information on Volucella and gives him references relating to this and butterfly colourings. States that colours are not necessarily related to resting-places but rather an endowment to enable them to withstand adverse conditions.

Rudimentary ovules of Acropera.

High opinion of Bates.

Orchid anatomy.

Trusts DO’s opinion on Acropera ovules.

Henri Lecoq’s miserable book on plant geography [Étude sur la géographie botanique de l’Europe (1854–8)].

H. W. Bates’s pleasure at meeting JDH.

No summary available.

Lindley suggests Gongora may be female Acropera.

CD’s orchid book nearly ready for press.

Discovers trimorphism in Lythrum is in H. Lecoq [Études sur la géographie botanique de l’Europe (1854–8)].

Variation in instincts among domestic animals.

Arrangements for sending Quiz.

Seeks information on heating hothouses night and day.

Gongora cannot be female of Acropera; it may itself be a male.

Hopes Daniel Oliver will "sink Atlantis" in his Royal Institution lecture.

Asks CD whether he hears from Asa Gray. JDH’s opinion of the crisis [Trent case, Nov 1861] and the American Civil War.

Julius von Haast alludes to glacial drift in Middle Island of New Zealand.

Backwardness of JDH’s son, Willy.

Encloses a reference from Daniel Oliver which may be useful.

Glad CD has given up on Acropera ovules.

Doubts phanerogams less different in extreme forms [than Crustacea].

No systematic parallelism between plants and animals.

Offers list of Arctic plants with their colours. Asks CD whether it is useful to add colour to [descriptions of] plants.

Asks JDH to arrange for some melastomads to be sent to him.

Discusses dimorphism and suggests CD investigate Valeriana.

Praises CD’s views with respect to the U. S. Civil War and relations with England. Worsening relations between Britain and U. S.

Thanks CD for his contribution to the memoir of Henslow [L. Jenyns, Memoir of the Rev. John Stevens Henslow (1862)].