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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 |
