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To Josef Popper   15 February 1881

Summary

Cannot help JP [with bird-powered flying machine].

Author:  Charles Robert Darwin
Addressee:  Josef Popper (Josef Popper-Lynkeus)
Date:  15 Feb 1881
Classmark:  Smithsonian Libraries (Dibner Library of the History of Science and Technology MSS 405 A. Gift of the Burndy Library)
Letter no:  DCP-LETT-13054

From Josef Popper   11 February 1881

Summary

Interested in theory of flight machines. Thinks it may be possible to fly by hitching man to large birds. What does CD think?

Recalls gift of book sent to CD.

Author:  Josef Popper (Josef Popper-Lynkeus)
Addressee:  Charles Robert Darwin
Date:  11 Feb 1881
Classmark:  DAR 201: 30
Letter no:  DCP-LETT-13051
Document type
letter (2)
Correspondent
Darwin, C. R.[X]
Popper-Lynkeus, Josef[X]
Date
1881 (2)
letter