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George W. Platzman (private collection) in repository 
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From:
Charles Robert Darwin
To:
Henry Doubleday
Date:
1 Mar [1868]
Source of text:
George W. Platzman (private collection)
Summary:

Has been interested in copy of HD’s letter to H. T. Stainton on numerical proportions of the sexes of insects. Do they vary during different years?

Does he have opinions about the courtships of butterflies?

Will send a copy of his paper on Primula when it is published. [See 5997.]

Contributor:
Darwin Correspondence Project