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From P. B. Mason 29 March 1871
Summary
More details on children with hairy backs;
reasons for greater mortality rate of male children.
Author: | Philip Brookes Mason |
Addressee: | Charles Robert Darwin |
Date: | 29 Mar 1871 |
Classmark: | DAR 90: 72–3 |
Letter no: | DCP-LETT-7641 |