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From Fritz Müller   4 March 1867


Reports observations on fertility of orchids he has self-pollinated and crossed with pollen of other species.

Author:  Johann Friedrich Theodor (Fritz) Müller
Addressee:  Charles Robert Darwin
Date:  4 Mar 1867
Classmark:  DAR 142: 102
Letter no:  DCP-LETT-5429

To Alfred Newton   4 March [1867]


Thanks for information about the dotterel.

CD had ascertained by dissection that the female of the carrion-hawk of the Falkland Islands is very much brighter coloured than the male. Has inquired about its nidification. Mentions other instances of female birds that are brighter and more beautiful than the males and suggests causes for this anomaly.

Author:  Charles Robert Darwin
Addressee:  Alfred Newton
Date:  4 Mar [1867]
Classmark:  DAR 185: 89
Letter no:  DCP-LETT-5430
Document type
letter (2)