Is preparing a popular work on astronomical phenomena and would welcome copies of JH's Outlines Astr. and Cape Results.

Naudin has not answered CD’s letter.

Reactions of Candolle, Naudin, Decaisne, and Gaston de Saporta to Origin.

CD’s new hothouse.

CD’s Linum paper.

JDH’s work on Welwitschia.

Is pleased H. J. Temple (3rd Viscount Palmerston) has replied so promptly to JH's memorial regarding Thomas Maclear. Would like JH's sanction for JL's support of George Rümker as the new Observer at Hamburg.

Asks CD’s views on TR’s observations that leaves breathe from their under-surfaces.

Peach-trees in hothouses cannot be kept in health unless fresh air is admitted so as to make its way under the leaves.

Continues his observations on the effect of environment on men – those migrating to America gradually assuming Indian-like features.

Thanks FR for sketch of progress of evolutionary theory in Germany.

Compliments to Gustav Jäger.

Comments on FR’s book [Ch. Darwin’s Lehre (1863)].

Further to dealing with report on William Hopkins's paper [see GS's 1862-12-24].