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Westwood, J. O. in correspondent 
1860-1869::1861::09 in date 
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DCP-LETT-3243

From:
Charles Robert Darwin
To:
John Obadiah Westwood
Date:
4 Sept [1861]
Source of text:
Oxford University Museum of Natural History (Hope Entomological collection)
Summary:

Is certain he never had Morren’s paper from JOW or heard of it before JOW’s note; will write to Gardeners’ Chronicle about it [see 3252].

Thanks for the two Sphinx moths; unfortunately the pollen-masses do not belong to orchids but to Asclepias.

Asks whether R. B. Todd’s Cyclopedia of Anatomy and Physiology [1835–59] has an article on fertilisation of orchids.

Contributor:
Darwin Correspondence Project

DCP-LETT-3267

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
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