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From B. J. Placzek    19 November 1880

Summary

Behaviour of pigeons is now different from that described in Beresbith Raba, a 3d century gloss on Genesis.

Author:  Baruch Jakob Placzek
Addressee:  Charles Robert Darwin
Date:  19 Nov 1880
Classmark:  DAR 174: 47
Letter no:  DCP-LETT-12829

To B. J. Placzek   [after 19 November 1880]

Summary

Expresses doubts that pigeons could rest one wing during flight.

Author:  Charles Robert Darwin
Addressee:  Baruch Jakob Placzek
Date:  [after 19 Nov 1880]
Classmark:  Placzek 1883, p. 112 n.
Letter no:  DCP-LETT-12829F