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DCP-LETT-11623

From:
Francis Darwin
To:
Charles Robert Darwin
Date:
[21 July 1878]
Source of text:
DAR 162: 59, DAR 209.8: 151
Summary:

Has been investigating nutational movements of climbing plants; comments on the opinions of Julius von Wiesner and Julius Sachs. Remarks on the sleep movements of certain plants and the mechanism of tendril curvature. Is experimenting with Porlieria.

Has visited K. G. Semper’s laboratory.

Contributor:
Darwin Correspondence Project

DCP-LETT-11623A

From:
Johann Friedrich Theodor (Fritz) Müller
To:
Charles Robert Darwin
Date:
21 July 1878
Source of text:
Möller ed. 1915–21, 2: 382
Summary:

Is sending CD the seeds of a beautiful Cassia given to him by a friend. He sketched the unripe fruit a few months ago. This plant is rare in the area around Sta Catharina. He has found their largest and most beautiful butterfly Callidryas manippe near this tree and its caterpillars living on its leaves. Comments on how remarkable it is to find a species limited to living on a single tree in so large an area.

Contributor:
Darwin Correspondence Project
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