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Darwin, C. R. in correspondent 
Sorby, H. C. in correspondent 
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DCP-LETT-13585

From:
Henry Clifton Sorby
To:
Charles Robert Darwin
Date:
28 Dec 1881
Source of text:
DAR 177: 219
Summary:

Discusses colour changes of plant colouring material.

Is doing much marine work from his yacht; asks whether CD has any suggestions for profitable observations.

Contributor:
Darwin Correspondence Project

DCP-LETT-13598

From:
Henry Clifton Sorby
To:
Charles Robert Darwin
Date:
3 Jan 1882
Source of text:
DAR 177: 220
Summary:

Reports the inconclusive results of some experiments he has been doing for CD [related to plant colouring material?].

Contributor:
Darwin Correspondence Project
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