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Darwin, C. R. in correspondent 
1870-1879::1871::09::15 in date 
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From:
Charles Robert Darwin
To:
Abraham Dee Bartlett
Date:
15 Sept 1871
Source of text:
Houghton Library, Harvard University (Autograph File, D)
Summary:

CD questions ADB on the mode of feeding of geese and on the existence of variations in the structure of the bill; is trying to trace gradations in structure and habits.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
John Royle Martin
Date:
15 Sept 1871
Source of text:
American Philosophical Society (Mss.B.D25.403)
Summary:

Buys ten shares in the Artizans, Labourers, & General Dwellings Co.

Contributor:
Darwin Correspondence Project
From:
H. Marval
To:
Charles Robert Darwin
Date:
15 Sept 1871
Source of text:
DAR 89: 77–8
Summary:

Observations on behaviour of spiders in Astrakhan and Turkestan.

Contributor:
Darwin Correspondence Project
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From:
William Winwood Reade
To:
Charles Robert Darwin
Date:
15 Sept 1871
Source of text:
DAR 176: 48
Summary:

Believes CD will not consider him a good Darwinian since he accepts natural selection only as a secondary law.

Contributor:
Darwin Correspondence Project