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Fig 3 Red Cabbage arched stem tied

Circumnutation of Hypocotyl Dec. 25th from 8° 50' a.m. Dec 25' to 8° a.m Dec. 26th

(Fig 5) 1/2 scale (Reduced to 1/2 scale no lettering) Diagram R

Eng

[81v]

accorded was the case in at least six out of the ten cases, namely with Brassica, Hibiscus, Tropæolum, Nemophila, Borago and Canna; for a when a capsule contains only a few seeds these will be apt to be better nourished so as to be heavier, than where many are contained in the same capsule. It should, however, be observed that in the some of the above cases in which the crossed seeds were the heaviest, as with Sarothamnus & Cyclamen, nevertheless the crossed capsules contained the greater number. Whatever may be the explanation of the self-fertilised seeds being often the heaviest, it is a

[sheet of paper pasted on:] remarkable that the seedlings raised from them, in the first generation of Ipomœa, with Brassica, Tropæolum & Nemophila, were inferior in height & in other ways to the seedlings raised from the crossed seeds. This fact shows how superior in constitutional vigour the crossed seedlings must have been, for it cannot be doubted that heavy & fine seeds would tend to yield the finest plants.

[Cross and self fertilisation, p. 353: "The superiority in weight of the self-fertilised seeds in at least six out of the ten cases, namely, with Brassica, Hibiscus, Tropaeolum, Nemophila, Borago, and Canna, may be accounted for in part by the self-fertilised capsules containing fewer seeds; for when a capsule contains only a few seeds, these will be apt to be better nourished, so as to be heavier, than when many are contained in the same capsule. It should, however, be observed that in some of the above cases, in which the crossed seeds were the heaviest, as with Sarothamnus and Cyclamen, the crossed capsules contained a larger number of seeds. Whatever may be the explanation of the self-fertilised seeds being often the heaviest, it is remarkable in the case of Brassica, Tropaeolum, Nemophila, and of the first generation of Ipomoea, that the seedlings raised from them were inferior in height and in other respects to the seedlings raised from the crossed seeds. This fact shows how superior in constitutional vigour the crossed seedlings must have been, for it cannot be doubted that heavy and fine seeds tend to yield the finest plants."]