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From:
John Obadiah Westwood
To:
Charles Robert Darwin
Date:
26 Sept 1861
Source of text:
DAR 181: 89
Summary:

Has found the reference to Charles Morren’s paper, "On the agency of insects in causing sterility in flowers" [Proc. R. Entomol. Soc. Lond. 1 (1836): xliv–xlv].

Common white butterflies remove pollen-masses with their tarsi from plants of the Asclepiadaceae.

Contributor:
Darwin Correspondence Project
Text Online
From:
Michael Faraday
To:
Edward Barnard and Margaret Barnard
Date:
26 September 1861
Source of text:
Dennis Embleton
Summary:

No summary available.

Contributor:
Faraday Project
From:
Sir John Herschel
To:
Alfred P. Wire
Date:
[26 September 1861]
Source of text:
RS:HS 23.340
Summary:

AW's 'Thaumatrope' is ingenious, but applies only to periodic movement. JH aims to reproduce non-periodic motion. Commends AW's suggestion to employ government schoolmasters as meteorology observers.

Contributor:
John Herschel Project
Text Online
From:
Ferdinand von Mueller
To:
Johan Lange
Date:
26 September 1861
Source of text:
Lange Papers, Botanisk Centralbibliotek, Copenhagen
Summary:

No summary available.

Contributor:
Correspondence of Ferdinand von Mueller Project