Pot 1 : 15 4/8 : 26 : 40 : 44.
Pot 2 : 3 : 15 : 6 4/8 : 43.
Pot 3 : 8 : 13 4/8 : 16 : 33.
Pot 4 : 5 : 5 : 11 4/8 : 11.
Total : 31.5 : 59.5 : 74.0 : 131.0.
As the plants did not grow to their proper height in the above small
pots in Table 6/84, four crossed and four self-fertilised plants were
raised from the same seed, and were planted in pairs on the opposite
sides of four very large pots containing rich soil; so that they were
not exposed to at all severe mutual competition. When these plants were
in flower I neglected to measure them, but record in my notes that all
four self-fertilised plants exceeded in height the four crossed plants
by 2 or 3 inches. We have seen that the flowers on the original or
parent-plants which were crossed with pollen from a distinct plant
yielded much fewer seeds than those fertilised with their own pollen;
and the trial just given, as well as that in Table 6/84, show us clearly
that the plants raised from the crossed seeds were inferior in height to
those from the self-fertilised seeds; but only when not greatly crowded.
When crowded and thus subjected to very severe competition, the crossed
and self-fertilised plants were nearly equal in height.
CROSSED AND SELF-FERTILISED PLANTS OF THE SECOND GENERATION.
Twelve flowers on the crossed plants of the last generation growing in
the four large pots just mentioned, were crossed with pollen from a
crossed plant growing in one of the other pots; and twelve flowers on
the self-fertilised plants were fertilised with their own pollen.
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