Returns copy [of J. Hortic. Soc. Lond.]. Mentions article by William Herbert ["Local habitation and wants of plants", J. Hortic. Soc. Lond. 1 (1846): 44–9].
Asks to visit RO to talk about mammifers of the [Rio] Plata.
Hugh Falconer gives no specific objections to Forbes’s views.
Botanical contrast between Cape of Good Hope and the rest of Africa is as strong as that between Australia and India.
Wishes CD would leave off snuff.
On geological works of Tschudi and Buch.
"My health keeps indifferent & I do not suppose I shall ever be a strong man again: everything fatigues me, & I can work but little at my writing: this summer, however, I shall get out my geology of S. America".
"I found Bronn’s Geschichte, which you recommended me, very useful, for references to facts on variation".
Is pleased JDH will attend to polymorphism and also with the botanical relation, as stated by JDH, between Africa and Java.
Would welcome any information on impregnation in the bud.
CD’s suggestions for improving a paragraph by JDH.
On distribution of certain species and their variation relative to a central, typical form.
Writes concerning CD’s "geometrico-geological problem". Attempts to square some of CD’s observations with certain geometrical theories concerning geological elevation.
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