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Sending revisions of chapter on mimicry.
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Discusses a new argument against Romanes' view of selection.
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Is going to Newcastle next Saturday, and also has a lecture at Sale, near Manchester on Tuesday. Has started on his work on popular Darwinism.
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Encloses postage for umbrella Meldola returned. Has had a breakthrough with his hybridity chapter ... "in some cases nat. select. will accumulate variations in infertility between incipient species." Thinks he has made the issue a good deal clearer than Darwin left it.
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