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From Raphael Meldola   21 September 1877

Summary

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.

Author:  Raphael Meldola
Addressee:  Charles Robert Darwin
Date:  21 Sept 1877
Classmark:  DAR 171: 123
Letter no:  DCP-LETT-11147