Chapter 1. Introductory Remarks
_ CHAPTER I. INTRODUCTORY REMARKS Various means which favour or determine the cross-fertilisation of plants. Benefits derived from cross-fertilisation. Self-fertilisation favourable to the propagation of the species. Brief history of the subject. Object of the experiments, and the manner in which they were tried. Statistical value of the measurements. The experiments carried on during several successive generations. Nature of the relationship of the plants in the later generations. Uniformity of the conditions to which the plants were subjected. Some apparent and some real causes of error. Amount of pollen employed. Arrangement of the work. Importance of the conclusions. There is weighty and abundant evidence that the flowers of most kinds of plants are constructed so as to be occasionally or habitually cross-fertilised by pollen from another flower, produced either by the same plant, or generally, as we shall hereafter see reason to believe, b

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