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From:
Heinrich Ludwig Hermann (Hermann) Müller
To:
Charles Robert Darwin
Date:
23 Oct 1867
Source of text:
DAR 171: 291
Summary:

Thanks for German version of Origin [1867].

Dipterous insects are adapted to eating pollen rather than only to sucking nectar. He describes such adaptations in two dipteran species.

Contributor:
Darwin Correspondence Project
From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[23 October 1867]
Source of text:
RS:HS 6.401
Summary:

Has managed to write out the song and insert the Blaise Pascal verse. Gave some advice to an Assurance Office yesterday, so he must be improving. Illness in his family this season has taken the form of great prostration. Gives curious confirmation of Isaac Newton's lack of knowledge of French. Blaise Pascal affair is growing into an epic.

Contributor:
John Herschel Project