RT has sent his observations on orchids to CD. Has found only one case of an insect with a pollinium adhering to it.

Thanks CD for two letters and his portrait.

CD’s book [Orchids] opened up terra incognita for him.

His work on S. African butterflies continues.

Reports on a moth that punctures peach skins.

Interesting that thoughtful naturalists are forced to admit mutability of species.

Some notes on Oxalis.

Comments on CD’s paper on Linum [Collected papers 2: 93–105].

Sends specimens of dimorphic and trimorphic Oxalis.

Comments on H. W. Bates’s work [Naturalist on the river Amazons].