Is doubtful about the publication of Fritz Müller’s letter after so long an interval.
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Is doubtful about the publication of Fritz Müller’s letter after so long an interval.
Thinks the facts in Fritz Müller’s letter could be published.
Recommends August Weismann’s essay on dimorphism ["Über den Saison-Dimorphismus der Schmetterlinge", Studien zur Descendenz-Theorie 1 (1875)]
and has no doubt that intermediate forms could be eliminated as RM suggests.
Does not think Fritz Müller can object to anything RM has said in his essay.
Has alluded to colour preference among butterflies in Descent [1: 400–1].
Has reread copy of Fritz Müller’s letter that CD sent some time ago and would like to publish the entomological observations in it.
Encloses Fritz Müller’s letter.
Is exhibiting butterflies in which variations in the female show a finely graded series. Believes dimorphism can be explained by the selection of the extremes of such a series and the consequent extinction of the intermediates.