From:
Charles Robert Darwin
To:
William Main
Date:
29 Nov [1872]
Source of text:
Wellcome Collection (MS.7781/1–32 item 10)
Summary:
Thanks WM for his letter. CD does not think WM’s principle of [up-tending and down-tending] lines explains the cases of expression of emotions referred to, and, even if it did, the problem would remain as to why the lines should express what WM believes they do.
Contributor:
Darwin Correspondence Project