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Darwin, C. R. in addressee 
1860-1869 in date 
Darwin, C. R. in correspondent 
Günther, Albert in correspondent 
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From:
Albrecht Carl Ludwig Gotthilf (Albert) Günther
To:
Charles Robert Darwin
Date:
19 Dec 1867
Source of text:
DAR 82: B72–4
Summary:

Sexual differences in reptiles, especially Indian [see A. Günther, The reptiles of British India (1864)].

Contributor:
Darwin Correspondence Project
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From:
Albrecht Carl Ludwig Gotthilf (Albert) Günther
To:
Charles Robert Darwin
Date:
[late Dec 1867 or early Jan 1868]
Source of text:
DAR 82: B75
Summary:

The Cyprinodontidae family of fishes exhibits sexual differences as remarkable as any in reptiles or birds [Descent 2: 7, 9–10].

Contributor:
Darwin Correspondence Project
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From:
Albrecht Carl Ludwig Gotthilf (Albert) Günther
To:
Charles Robert Darwin
Date:
[c. 23 Mar 1868?]
Source of text:
DAR 82.2: 25
Summary:

Note on sexual differences in Monacanthus.

Contributor:
Darwin Correspondence Project
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From:
Albrecht Carl Ludwig Gotthilf (Albert) Günther
To:
Charles Robert Darwin
Date:
13 May 1868
Source of text:
DAR 165: 242a, DAR 82: B23
Summary:

Sends proofs of his fish paper.

Will observe modification of colour in fish.

Is studying the development of the axolotl.

Encloses notes in reply to CD’s queries on fishes.

Contributor:
Darwin Correspondence Project
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From:
Albrecht Carl Ludwig Gotthilf (Albert) Günther
To:
Charles Robert Darwin
Date:
23 Sept 1869
Source of text:
DAR 165: 243
Summary:

Mr Ford is attending to CD’s drawings [for Descent].

Death of AG’s wife.

Contributor:
Darwin Correspondence Project
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From:
Albrecht Carl Ludwig Gotthilf (Albert) Günther
To:
Charles Robert Darwin
Date:
[before 27 Sept 1869]
Source of text:
DAR 82: B16–20; DAR 84.2: 168
Summary:

Replies to CD’s queries on sexual habits and differences in fish and lizards.

Contributor:
Darwin Correspondence Project