[18]

Horizontal glass

vertical glass

Beet

Apogeotropism of Hypocotyl

Fig 2

[18v]

85

Ipomoea

weight the capsules from the Colchester-crossed plants were to those from the intercrossed plants as 100 to 51; so that the former probably contained a somewhat larger average number of seeds.

Brangels

We learn from this important experiment that plants in some degree related, which had been intercrossed during the nine previous generations, if they were fertilised by  quite new with pollen from a fresh stock yielded seedlings as superior to the seedlings of the again intercrossed plants, as these latter are to the strictly self-fertilised plants of the corresponding generation. For if we look to the plants of the ninth generation in Table 10 (and these offer in most respects the fairest standard of comparison) we find that the intercrossed plants were in height to the self-fertilised as 100 to 79, and in fertility as 100 to 26; whilst the Colchester-crossed plants are in height to the intercrossed as 100 to 78, and in fertility as 100 to 51.