Criticises style of JS’s fern paper [Edinburgh New Philos. J. 2d ser. 16 (1862): 209–27].
JS’s remark on "the two sexes counteracting variability in the product of the one" is new to CD.
Does the female [fern?] plant always produce female by parthenogenesis?
They seem to work on same subjects; CD has much material on Drosera.
Does not understand JS’s objections to natural selection.
Offers to suggest experiments.