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DCP-LETT-10396

From:
Heinrich Ludwig Hermann (Hermann) Müller
To:
Charles Robert Darwin
Date:
16 Feb 1876
Source of text:
DAR 46.2: C61–2
Summary:

Observations on hive- and humble-bees. Perforating habits differ in different individuals of the same species.

Contributor:
Darwin Correspondence Project
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DCP-LETT-10589

From:
Heinrich Ludwig Hermann (Hermann) Müller
To:
Charles Robert Darwin
Date:
4 Sept 1876
Source of text:
DAR 171: 306
Summary:

Bombus mastrucatus, an alpine bee, conforms to his observations that B. terrestris breaks open the flowers of Trifolium pratense. However, in the Alps, B. terrestris does not behave this way.

Gentiana species are adapted to lepidopteran cross-fertilisation.

Contributor:
Darwin Correspondence Project

DCP-LETT-10631

From:
Heinrich Ludwig Hermann (Hermann) Müller
To:
Charles Robert Darwin
Date:
4 Oct 1876
Source of text:
DAR 171: 307
Summary:

He has never observed the straight line flight routes in male humble-bees that CD reports.

His last letter was in error: alpine Bombus terrestris does break into some flowers.

Contributor:
Darwin Correspondence Project

DCP-LETT-10702

From:
Heinrich Ludwig Hermann (Hermann) Müller
To:
Charles Robert Darwin
Date:
6 Dec 1876
Source of text:
DAR 171: 308
Summary:

Thanks for Cross and self-fertilisation.

Fritz Müller has been appointed "Naturalista Viajante" of the Rio de Janeiro Museum, which will help his income greatly.

Contributor:
Darwin Correspondence Project

DCP-LETT-10736

From:
Heinrich Ludwig Hermann (Hermann) Müller
To:
Charles Robert Darwin
Date:
28 Dec 1876
Source of text:
DAR 171: 309
Summary:

No papers on heterostyly have appeared since 1873.

Contributor:
Darwin Correspondence Project
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