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Cohn, F. J. in correspondent 
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From:
Ferdinand Julius Cohn
To:
Charles Robert Darwin
Date:
31 Dec 1877
Source of text:
DAR 161: 205
Summary:

Sends details of H. H. R. Koch’s work on bacteria, including first photographs.

J. S. Burdon Sanderson’s and Koch’s collaboration on systemic fever.

Thinks movement of Francis Darwin’s Dipsacus filaments is an artifact.

Contributor:
Darwin Correspondence Project