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From John Blackwall   12 February 1868

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Summary

Variability of sizes and colours in spiders; on proportion of sexes; courtship of spiders.

Author:  John Blackwall
Addressee:  Charles Robert Darwin
Date:  12 Feb 1868
Classmark:  DAR 82: A78–9
Letter no:  DCP-LETT-5871

From John Blackwall   18 February 1868

thumbnail

Summary

Proportion of sexes in spiders; coloration.

Author:  John Blackwall
Addressee:  Charles Robert Darwin
Date:  18 Feb 1868
Classmark:  DAR 86: A2–3
Letter no:  DCP-LETT-5892
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letter (2)
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Blackwall, Johndisabled_by_default
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