• Darwin Archive | 'Origin of Species': portfolios I | 'Natural Selection' chapters 5 and 6, portfolios on Seeds and Flowers (Cattell Catalogues) and 'Habits of Bees': notes on fertilisation of flowers | Materials for chapter 6 | Natural Selection Portfolios: Seeds & Flowers (Cattell Catalogues): Effects of Selection (DAR 46.2A) | NS I Seeds 14-17 Notes, 1855-06-18 - 1855-08-17 | NS I Seeds-16 Note, 1855-08-13 | Examined pods of all my peas [comments on variations in size and/or colour], 1855-08-13

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