Bentham has sent a damaged spurless Orchis pyramidalis; asks CL to send another. Fears they are irregular monsters. [See Orchids, pp. 47–8.]

Thanks CL for orchids acquired from a collector.

Discusses role of Providence in variation. Does CL honestly think it applies to variations in domestication? If not ordained there, sees no reason for it in nature either.

Suggests change in a passage [in MS] of CL’s [Antiquity of man (1863)] dealing with adaptations for travel.

Comments on review of Origin by F. W. Hutton [Geologist (1861): 132–6, 183–8].

Emphasises importance of variability for natural selection.

Discusses possiblity of intelligent causes in variation.

Thanks for the valuable present, which he is reading as fast as possible. Comments on the work in the light of his own researches. Is glad he put in a note about C. R. Darwin.

Sends an enclosure [a letter from T. F. Jamieson, see 3247].

"I am smashed to atoms about Glen Roy. My paper was one long gigantic blunder."

Absence of organic remains in many deposits.

Discusses presence of marine animals near icebergs.

Comments on former geological state of England.

Discusses CL’s correspondence with T. F. Jamieson. Comments on Jamieson’s theory that the roads of Glen Roy were formed by a glacial lake. Discusses elevation of Scotland during the glacial period.

Additional discussion of Jamieson’s theory that the roads of Glen Roy were formed by a glacial lake. Suggests the possible marine origin of the Glen Spean terraces. Comments on the power of lakes to produce pebbles. Discusses elevation of Wales and Scotland during the glacial period.

Asks for copy of CD’s paper ["Ancient glaciers of Caernarvonshire", Collected papers 1: 163–71]. Gathers that drift of Moel Tryfan is glacial.

Believes Glen Roy roads formed later than submergence of Scotland.

Asks CD’s opinion concerning relative chronology of various glacial deposits, particularly a flint tool find in the Ouse River near Bedford.

The flint tools found at Bedford.

Further discussion of Jamieson’s theory of the formation of the roads of Glen Roy by a glacial lake. Comments on formation of Glen Spean terraces. Mentions glaciers in North Wales.

Agreement with John Murray to publish [Orchids].

Continued discussion of Jamieson’s Glen Roy theory. Mentions river erosion of glaciers. Quotes from old letter to CL [1116].

Is working hard on orchids; fears subject is too complex for the public.

Ice could not have formed the blockages in Lochaber unless in every case the water escaped over some col into a contiguous valley on the same watershed, or into the eastern watershed. Supposes that the cols were not land-straits, but the places where the lakes were drained when forced to flow the wrong way.

Comments especially on the "intermediate shelf" problem of Glen Roy; views of Jamieson and Milne. CD "cannot help a sneaking hope that the sea might have formed the horizontal shelves".

No summary available.

Suggests that the height of the water which formed the shelves in Glen Roy was determined not by the height of the blocking glacier but by the height of a col. Notes problems in the idea.

Explains how melting of ice in Glen Spean could have successively freed two lower cols, thus establishing the water-levels that determined the two lower shelves in Glen Roy.

Plans to read a paper to the Linnean Society ["Sexual forms of Catasetum", Collected papers 2: 63–70].

Came to Florence on account of the sudden death of Mrs. [Joanna B.] Horner. Thanks for the translation of a book of the Iliad, but thinks only Greek scholars should read it. Has some queries regarding the migration of hippopotomi; can JH supply any facts or references?

Jamieson has revisited Glen Roy and confirmed his theory of glacier lakes.

A. G. More considers CD the most profound of reasoners.

Relates personal news about family members.

CD is "glad Glen Roy is settled".

Mentions evolutionary remarks on birds by Owen.

Compares variability among lower and higher organisms. Comments on Hooker’s view of the subject.

Forthcoming publication of Huxley’s book [Evidence as to man’s place in nature (1863)] and Lyell’s [Antiquity of man (1863)].

No summary available.