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1860-1869::1868::04 in date 
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From:
Charles Robert Darwin
To:
William Erasmus Darwin
Date:
8 Apr [1868]
Source of text:
DAR 210.6: 124, 128
Summary:

Thanks Charles Langstaff for his observations relating to expression. Has requested observations on the platysma. Discusses the actions of other facial muscles, especially during crying. [Encloses 5828.]

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
William Erasmus Darwin
Date:
16 Apr [1868]
Source of text:
DAR 210.6: 129
Summary:

Asks WED whether Langstaff could make some observations on certain facial muscles in expression.

Contributor:
Darwin Correspondence Project
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