# To C. G. Semper   [after 6 December 1878]

The transcript of this letter is not yet available online.

### Summary

Gives CGS permission to use his letters in any way he thinks fit.

Discusses the direct effect of external conditions as an agent of change in organisms; has encountered many cases since the publication of Origin.

## Summary

Gives CGS permission to use his letters in any way he thinks fit.

Discusses the direct effect of external conditions as an agent of change in organisms; has encountered many cases since the publication of Origin.

## Letter details

Letter no.
DCP-LETT-11777
From
Charles Robert Darwin
To
Carl Gottfried Semper
Sent from
Down
Source of text
DAR 202: 120v
Physical description