Pot 2 : 7 6/8 : 11 4/8.
Pot 2 : 12 1/8 : 8 5/8.
Pot 2 : 7 : 14 3/8.
Pot 3 : 13 5/8 : 10 3/8.
Pot 3 : 12 2/8 : 11 6/8.
Pot 4 : 7 1/8 : 14 6/8.
Pot 4 : 8 2/8 : 7.
Pot 4 : 7 2/8 : 8.
Pot 5 : 8 5/8 : 10 2/8
Pot 5 : 9 : 9 3/8.
Pot 5 : 8 2/8 : 9 2/8.
Crowded.
Total : 159.38 : 175.50.
The average height of the sixteen intercrossed plants is here 9.96
inches, and that of the sixteen self-fertilised plants 10.96, or as 100
to 110; so that the intercrossed plants, the progenitors of which had
been self-fertilised for the six previous generations, and had been
exposed during the whole time to remarkably uniform conditions, were
somewhat inferior in height to the plants of the seventh self-fertilised
generation. But as we shall presently see that a similar experiment made
after two additional generations of self-fertilisation gave a different
result, I know not how far to trust the present one. In three of the
five pots in Table 3/19 a self-fertilised plant flowered first, and in
the other two a crossed plant. These self-fertilised plants were
remarkably fertile, for twenty flowers fertilised with their own pollen
produced no less than nineteen very fine capsules!
THE EFFECTS OF A CROSS WITH A DISTINCT STOCK.
Some flowers on the self-fertilised plants in Pot 4 in Table 3/19 were
fertilised with their own pollen, and plants of the eighth
self-fertilised generation were thus raised, merely to serve as parents
in the following experiment.
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