• Darwin Archive | 'Descent of man': portfolios | 'Descent of man': first edition, 1871, and 'Insectivorous Plants' | 'Descent of man' first edition: notes on proportion of sexes, and 'Insectivorous plants': correspondence | Descent Portfolios 1st edn, Sexual Selection: Proportion of Sexes (1) | Sexes (1)-44 Letter, 1869-01-21 | George Cupples to Charles Robert Darwin, 1869-01-21

Repository Details

Part of the Cambridge University Library Repository