Attended the lectures given by JH's son at the [Royal Institution] and Michael Faraday and Bence Jones think he should not be considered for the post at the Geographical as he is cut for more scientific things. Would like JH's views.

Reminds CD of their acquaintance at Ilkley Wells; encloses portrait of self;

describes the topography, trade, commerce, produce, and population of São Paulo province.

Sends pieces of rock blasted for railway for CD to analyse.

CD’s Linum paper [Collected papers 2: 93–105].

Sending up-to-date railway map of southern region.

No summary available.

Talks about variations in climate, glaciers, and compares climates of various historical periods. JR is writing about such matters in a second edition of one of his works.

Grateful for letters and enclosures. Has been ill himself, but is pleased to hear those at Collingwood are well. Hopes the prospect of Alexander [Herschel]'s appointment will be realized.

Thanks for a gift.

Discusses exchange of photographs with Édouard Claparède, "for whom I feel the highest respect".

No summary available.

Interested in ACR’s Presidential Address [Q. J. Geol. Soc. Lond. 19 (1863): xxix–lii] on the breaks in succession (of formations). Hopes ACR will provide a diagram of breaks, with the percentage of fossils that "pass upwards", i.e., continue to appear.

Horrified at Huxley’s geology.

Wishes ACR would discuss "creeps".

After finishing vol. 2 [of Naturalist on the river Amazons], CD still has only praise. Remarks that his family is also enjoying the book. He regrets having finished, since he so enjoyed the descriptions.

JDH has lost a letter from Julius von Haast intended for CD.

No summary available.