Answers HGB’s criticism of Origin.

Explains HGB’s case of differences in rats by adaptation.

CD’s view explains homological and embryological resemblances of each type.

Does not believe all development is at same rate. Cites Australian forms.

Does not see force of objection that origin of life must be explained.

Asks if C. L. Brehm’s subspecies of birds are really characteristic of regions of Germany.

Discusses views of T. V. Wollaston concerning island species related to those of mainland; possible land connection between islands and mainland.

Comments on bats of Atlantic islands.

Plant extinction on St Helena.

Experiments on Drosera.

Bronn’s objections [to the Origin] at end of his translation.

Regrets that JH's son Alexander is quitting astronomy. Asks JH to support his effort to obtain position at Madras Observatory. Announces first project would be survey of southern heavens in completion of [F. W. A.] Argelander's new atlas.

A poser: carbonate of soda produces inflection rather than contraction in Drosera. Possible solution: glands at end of hairs absorb as well as secrete. Fascinated by currents in cells after inflection.