No summary available.

Must decline invitation for dinner; he is unwell.

Asks JCR to collect cirripedes for him on forthcoming expedition [to the Arctic in search of Sir John Franklin].

Gives a referee’s report on Samuel Haughton’s paper ["Notes on physical geology, no. IV", read 4 Apr 1878; published as "Physical geology", Nature 18 (1878): 266–8]. Believes his estimate of geological time is extremely wild. The conclusion that the interval of time separating the Miocene from the present is greater than that between the commencement of the Secondary period and the Miocene "seems almost monstrous". Recommends the paper not be published in the Proceedings.

Undertakes to write geological part of Admiralty Instructions [A manual of scientific enquiry (1849), Collected papers 1: 227–50]. Has doubts as to his success.

Sends MS of his chapter on geology for Manual [Collected papers 1: 227–50]. Fears it may be too long. Does not much like it but can do no better. After hesitation, has recommended books. Defends his point that mere collection of rock specimens is "of hardly any use to Geology".

Sends MS of "Geology" for Manual [Collected papers 1: 227–50]. First parcel lost. Asks JFWH to give advice on an unclear note, translated from Élie de Beaumont, on measuring incline of lava-flows.

Describes colour changes from blue to red in valves of operculum of the cirripede genus Ibla.

Sends two valves of Ibla.

In his chapter [for Manual, Collected papers 1: 227–50], he will strike out any part that JFWH wants struck out, but if much shortening is required it will need rewriting.

Reports on Joseph Prestwich’s paper, "On the origin of the parallel roads of Lochaber" [read 1 May 1879]. Strongly recommends that the paper be published in Philosophical Transactions [Philos. Trans. R. Soc. Lond. 170 (1880): 663–726].

Thanks JFWH for the trouble he has taken to correct printing error in "Geology".

Discusses Dr Gully’s water-cure.

Receipt for £3 5s, proceeds of a lecture, for the Down Coal and Clothing Club.

Will give his support to a school for the poor to be a memorial to the late Sir John Lubbock.

Gives his opinion on some difficulties that have arisen in connection with the establishment of the school for the poor at Down.

Declines the honour of writing a biography of Leopold von Buch, on grounds that he would not do it well; nor does he hold Buch so high as the world at large does.

Thanks ES for his note [missing]. CD had understood that what was wanted was a eulogy [of Leopold von Buch] combined with historical criticism, after the French practice. Agrees that historico-critical sketches of work of great foreigners have a place in Philosophical Transactions and wishes he had taste and capacity for it.

Distressed to find himself in conflict with JWL on appointment of a Guardian [for the parish].

Is unequal to taking chair as President of Natural History Section of BAAS meeting in Liverpool. Very little fatigue or excitement brings on swimming of head, nausea, and other symptoms.

Reports that his intercession with Folliott Baugh [Rector of Chelsfield, Kent] has had no effect. Baugh still believes Farnborough’s rights have not been attended to if entire fund is applied to the school at Down.

CD called on Baugh but found him adamant; he has already laid the case before the [Charity] Commissioners and if necessary will take it to a Court of Equity.