From:
Johann Friedrich Theodor (Fritz) Müller
To:
Charles Robert Darwin
Date:
21 Jan 1879
Source of text:
Nature , 20 March 1879, pp. 463–4
Summary:
Has lately found frog that has eggs on its back.
Pupae of caddis-flies living on rocks have lost fringe of hairs on their feet. In species that live in the water these are used for swimming.
Contributor:
Darwin Correspondence Project