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Sowerby, J. de C. in correspondent 
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From:
Charles Robert Darwin
To:
James de Carle Sowerby
Date:
[13 Apr 1850]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

CD wants Lepadidae drawings [for Fossil Cirripedia] harder, with lines of growth more distinct; he wants no shading or similarity to lithography, which he thinks has harmed natural history. He realises that mutilated specimens may make accuracy difficult.

Contributor:
Darwin Correspondence Project