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1870-1879::1874::07 in date 
Romanes, G. J. in correspondent 
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From:
George John Romanes
To:
Charles Robert Darwin
Date:
10 July 1874
Source of text:
DAR 52: D1–2, 10–14
Summary:

Sets out some of his ideas on the effects of disuse on an organ. Disuse as a cause of reduction.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
George John Romanes
Date:
16 July 1874
Source of text:
American Philosophical Society (Mss.B.D25.444)
Summary:

Thanks GJR for his letter, regrets pressure of other work prevents his giving GJR’s remarks the attention they deserve. GJR makes clearer how an organ that has started to decrease will go on decreasing.

Contributor:
Darwin Correspondence Project
From:
George John Romanes
To:
Charles Robert Darwin
Date:
24 July 1874
Source of text:
DAR 52: D3–7
Summary:

Encloses a copy of a letter from H. Spencer giving his opinion on GJR’s views on disuse and a draft of GJR’s reply to Spencer.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
George John Romanes
Date:
28 July [1874]
Source of text:
American Philosophical Society (Mss.B.D25.446)
Summary:

Comments on Spencer’s terms.

Contributor:
Darwin Correspondence Project