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1870-1879::1870 in date 
Donders, F. C. in addressee 
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From:
Charles Robert Darwin
To:
Frans Cornelis (Franciscus Cornelius) Donders
Date:
13 May [1870]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

In a fortnight will begin to arrange notes on expression. Asks for FCD’s conclusions about the contraction of eye muscles. Is interested in abstract of FCD’s experiments on "rate of travelling of the nervous powers".

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Frans Cornelis (Franciscus Cornelius) Donders
Date:
19 May 1870
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

Expresses sympathy [on death of FCD’s daughter].

Will be grateful for his paper and letter.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Frans Cornelis (Franciscus Cornelius) Donders
Date:
3 June [1870]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

Thanks FCD for information.

Hopes that translation of his paper will appear in Dublin Journal.

Notes experience of his son [Leonard Darwin] on engorgement of eyes with blood. Discusses secretion of tears when eye muscles are involuntarily contracted.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Frans Cornelis (Franciscus Cornelius) Donders
Date:
21 June 1870
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

Comments on translation of FCD’s paper ["On the action of the eyelids", Arch. Med. 5 (1870): 20–38].

Speculates that closing eyelids may protect eyes from vibrations.

Discusses publication of Expression.

Contributor:
Darwin Correspondence Project