From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
19 July 1878
Source of text:
Universitäts- und Landesbibliothek Düsseldorf (slg 60/Dok/57)
Summary:
Offers to give CGS a writing machine.
Contributor:
Darwin Correspondence Project
Showing 1–5 of 5 items
Offers to give CGS a writing machine.
Pleased CGS will accept machine.
Discusses views of Moritz Wagner on modification of species. Two different cases: one in which a species is modified in the same country and cases in which a species splits. Glad CGS is taking up subject.
Discusses effect of isolation on species modification and the views of Moritz Wagner on the subject.
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.