Looking forward to publication of Insectivorous plants, which he will review.

Paul Mantegazza has criticised FD on insectivorous plants

and CD on sexual selection; FD maintains dichogamy in plants supports sexual selection.

Thanks for Thomas Belt’s Naturalist in Nicaragua [1874], which confirms some of his observations,

and for Insectivorous plants, which he praises.

Suggests that a book integrating knowledge of plant–animal interactions be written by a Darwinist.

Defines biology as the science of external interactions.

German reception is far more positive than Italian.

Thanks FD for the volumes of Revista Botanica [1874–5].

Has become Professor of Botany at Genoa.

Offers to send his paper on the necessity of out-crossing.

Has reviewed Forms of flowers in Revista Botanica [(1877): 84–106].

CD’s treatment by the French Academy.

Hypothesises that the mollusc-like mantle of Balanus originates from a form of grafting.

Thanks for Movement in plants; particularly supports indirect rather than direct action of light and gravity on plants.