Search: Weir, J. J. in addressee 
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From:
Charles Robert Darwin
To:
John Jenner Weir
Date:
13 Mar [1868]
Source of text:
The British Library (Egerton MS 2952: 8–10)
Summary:

Thanks for facts about birds displaying plumage during courtship; "for Butterflies I must trust to analogy altogether in regard to sexual selection".

Invites JJW to visit in summer.

Contributor:
Darwin Correspondence Project