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From George Cupples [1 June 1869]
Summary
Note on proportion of sexes born in sheep.
| Author: | George Cupples |
| Addressee: | Charles Robert Darwin |
| Date: | [1 June 1869] |
| Classmark: | DAR 85: B56 |
| Letter no: | DCP-LETT-6770 |
From George Cupples 20 June 1869
Summary
On proportion of sexes in litters of dogs.
| Author: | George Cupples |
| Addressee: | Charles Robert Darwin |
| Date: | 20 June 1869 |
| Classmark: | DAR 86: 58–9 |
| Letter no: | DCP-LETT-6789 |
