Has extracted CD’s Linum paper [Am. J. Sci. 2d ser. 36 (1863): 279–84].

Elaborate co-adaptations of orchids and insects demonstrate against "chance blows", whether few, as Oswald Heer would have, or many and slight as CD proposes.

Gives some observations on Drosera.

Comments on Richard Owen’s "transmutation theory" in his aye-aye paper [Trans. Zool. Soc. Lond. 5 (1866): 33–101].