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From:
William Erasmus Darwin
To:
Charles Robert Darwin
Date:
22 Mar [1864]
Source of text:
DAR 108: 86–7, 175–7
Summary:

Sends drawings of the pollen from Chinese Primula plants with styles and pistils of different lengths; observations on sizes and condition of their pollen.

Contributor:
Darwin Correspondence Project
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From:
Frederick Howlett
To:
Sir John Herschel
Date:
[22 March 1864]
Source of text:
RS:HS 10.16
Summary:

Has returned James Nasmyth's letter and has never seen Warren de La Rue's letter. Comments on Nasmyth's 'willow leaves.' Have been observed at Greenwich Observatory. Thanks for his remarks on the best kind of eye-piece.

Contributor:
John Herschel Project