Sexes of algae.
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Sexes of algae.
Continues earlier discussion, admitting his opinions have been modified. Still regards natural selection as one agent of several. States areas of disagreement.
Thanks CD for his patience and good-nature; does not want a controversial correspondence but wishes to reply to matters in CD’s letter, and does.
Has found some funny evidences of transmutation in Cliffortia. Sketches gradual passage "from very unlike to same" – e.g., from three-leafed form to two-leafed.
Sends dandelion [enclosed] with peculiar form of achene; suggests this solitary "sport" must have arisen by sudden jump from normal type.
The plants from the Cape did not show climbing habit in native country; WHH believes it a consequence of their being grown under disadvantages of climate.
Identifies South African species of plants that are normally non-climbers in the wild but climb freely when grown from seed at Glasnevin. Thinks there is probably a gradation in the wild between climbing and non-climbing varieties related to the degree of exposure each particular plant faces.
Has examined his specimens discussed in his previous note and adds further observations.