Search: Charles Darwin in collection 
1860-1869::1868::04::16 in date 
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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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From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
16 Apr 1868
Source of text:
DAR 84.1: 71–2, 140, DAR 181: 75
Summary:

Describes a curious litter of rabbits.

Pairing of rooks, courtship of golden pheasant.

Behaviour of finch hybrids.

Seasonal coloration of birds; bright plumage results from sexual selection.

Contributor:
Darwin Correspondence Project