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Crinum capense Long Bowed leaf

From night of 22d to May of 25th

Tracing I

F. 147

Same scale

3 sets of lettering. The middle one is so badly written, that I have written it again below within circle.─ The whole diagram is done very badly & coarsely.

Crinum Capense: circumnutation of dependent tip of young leaf, traced from (a little before) a vertical glass from 10 30 P.m. May 22 to 10.45 am 25;

Tracing not greatly magnified.

[125v]

(43) 599

Chapter 0 9

by too much manure, heat &c ─ ⊙ I do not however wish to maintain that self-sterility may not sometimes be of service to a plant in preventing self-fertilisation; but there are so many other means by which self-fertilisation can be checked or this process might be prevented or rendered difficult, including as we shall see in the next chapter the prepotency of pollen from any a distant other individuals over a plant's own pollen that self-sterility seems an almost superfluous acquirement for this purpose.)

(Finally, one g the most interesting points in regard to self-sterile plants, is the evidence afforded by them of the advantage or rather of the necessity of some degree or kind of differentiation in the sexual elements in order that they should unite and give birth to a new being; ⊙ this differentiation not being of a specialised nature.) It was ascertained that the five plants of Reseda odorata which were selected by chance, could by e perfectly fertilised by pollen taken from any one of them, but not by their own pollen; and a few additional trials were made with some other individuals which I have not thought worth recording. So again Hildebrand & Fritz Müller frequently speak of self-sterile plants being fertile with the pollen of every any other individual; and if there had been any exception to this