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From Rudolph Riemann   9 July 1875

Summary

Professional sheep-breeder interested in laws of inheritance reports his crosses between Serinus hortulanus and Dryospiza canaria. Seeks to make a new species. Crosses carried out with animals varying in their proportion of Serinus and Dryospiza parentage. Confirms Prosper Lucas’ law as given in Origin, ch. 9, with exception that strong individuals exhibit prepotency.

Author:  Rudolf Ehrenfried (Rudolf) Riemann
Addressee:  Charles Robert Darwin
Date:  9 July 1875
Classmark:  DAR 176: 157, 157/1
Letter no:  DCP-LETT-10054
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Author
Addressee
Correspondent
Darwin, C. R.disabled_by_default
Riemann, Rudolfdisabled_by_default
Date
1875 (1)