Pot 7 : 14 : 8.
Pot 7 : 13 4/8 : 7.
Pot 8 : 18 2/8 : 20 3/8.
Pot 8 : 18 6/8 : 17 6/8.
Pot 8 : 18 3/8 : 15 4/8.
Pot 8 : 18 3/8 : 15 1/8.
Crowded.
Total : 370.88 : 353.63.
Here the average height of the twenty-two crossed plants is 16.85, and
that of the twenty-two self-fertilised plants 16.07; or as 100 to 95.
But if four of the plants in Pot 7, which are much shorter than any of
the others, are struck out (and this would be the fairest plan), the
twenty-one crossed are to the nineteen self-fertilised plants in height
as 100 to 100.6--that is, are equal. All the plants, except the crowded
ones in Pot 8, after being measured were cut down, and the eighteen
crossed plants weighed 10 ounces, whilst the same number of
self-fertilised plants weighed 10 1/4 ounces, or as 100 to 102.5; but if
the dwarfed plants in Pot 7 had been excluded, the self-fertilised would
have exceeded the crossed in weight in a higher ratio. In all the
previous experiments in which seedlings were raised from a cross between
distinct plants, and were put into competition with self-fertilised
plants, the former generally flowered first; but in the present case, in
seven out of the eight pots a self-fertilised plant flowered before a
crossed one on the opposite side. Considering all the evidence with
respect to the plants in Table3/ 22, a cross between two flowers on the
same plant seems to give no advantage to the offspring thus produced,
the self-fertilised plants being in weight superior.
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