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From Arthur Russell   15 April 1872

Summary

Has acquired some French frogs, Rana esculenta, which have mated with R. temporaria, but the spawn has not developed.

Asks whether anyone has successfully crossed frogs and toads.

Author:  Arthur John Edward (Arthur) Russell, Lord Arthur Russell
Addressee:  Charles Robert Darwin
Date:  15 Apr 1872
Classmark:  DAR 176: 225
Letter no:  DCP-LETT-8286

From Arthur Russell   19 May 1873

Summary

In Variation CD claims there are no distinct races of carp, but AR says that in Germany a peculiar and constant variety of carp has been bred.

Author:  Arthur John Edward (Arthur) Russell, Lord Arthur Russell
Addressee:  Charles Robert Darwin
Date:  19 May 1873
Classmark:  DAR 176: 226
Letter no:  DCP-LETT-8915
Document type
letter (2)
Author
Addressee
Correspondent
Darwin, C. R.[X]
Russell, Arthur[X]
Date
1872 (1)
1873 (1)
letter