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Hope Entomological Collections, Oxford University Museum of Natural History in repository 
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From:
Johann Friedrich Theodor (Fritz) Müller
To:
Charles Robert Darwin
Date:
5 Apr 1878
Source of text:
Oxford University Museum of Natural History (Hope Entomological Collections 1350: Hope/Westwood Archive, Darwin folder)
Summary:

Observations on a sensitive Mimosa.

Comments on structure and positioning of "odoriferous organs" of moths and butterflies,

and feeding habits of butterfly larvae.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Raphael Meldola
Date:
17 Apr 1878
Source of text:
Oxford University Museum of Natural History (Hope Entomological Collections 1350: Hope/Westwood Archive, Darwin folder)
Summary:

Would like to have some insect photographs identified; they seem to show pretty and new case of protective resemblance.

Contributor:
Darwin Correspondence Project