[ CHAPTER V. GERANIACEAE, LEGUMINOSAE, ONAGRACEAE, ETC. ]

[ CHAPTER VI. SOLANACEAE, PRIMULACEAE, POLYGONEAE, ETC. ]

[ CHAPTER VII. A SUMMARY OF THE HEIGHTS AND WEIGHTS OF THE CROSSED AND SELF-FERTILISED PLANTS. ]

[ CHAPTER VIII. DIFFERENCE BETWEEN CROSSED AND SELF-FERTILISED PLANTS IN CONSTITUTIONAL VIGOUR AND IN OTHER RESPECTS. ]

[ CHAPTER IX. THE EFFECTS OF CROSS-FERTILISATION AND SELF-FERTILISATION ON THE PRODUCTION OF SEEDS. ]

[ CHAPTER X. MEANS OF FERTILISATION. ]

[ CHAPTER XI. THE HABITS OF INSECTS IN RELATION TO THE FERTILISATION OF FLOWERS. ]

[ CHAPTER XII. GENERAL RESULTS. ]