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].
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.
Asks to visit RO to talk about mammifers of the [Rio] Plata.