From Hubert Airy 3 April 1871
Summary
Comments on discussion of residual organs in Descent [ch. 1].
Describes his ability to contract the platysma myoides at will.
Suggests reason for loss of voluntary movement of ears in men and monkeys.
| Author: | Hubert Airy |
| Addressee: | Charles Robert Darwin |
| Date: | 3 Apr 1871 |
| Classmark: | DAR 87: 37–8 |
| Letter no: | DCP-LETT-7657 |
