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Effects of Cross and Self Fertilisation in the Vegetable Kingdom by Charles Darwin
page 68 of 636 (10%)

Pot 2 : 96 : 85.
Pot 2 : 77 2/8 : 93.

Pot 3 : 73 : 86 2/8.
Pot 3 : 66 : 82 2/8.
Pot 3 : 84 4/8 : 70 6/8.

Pot 4 : 88 1/8 : 66 3/8.
Pot 4 : 84 : 15 4/8.
Pot 4 : 36 2/8 : 38.
Pot 4 : 74 : 78 3/8.

Pot 5 : 90 1/8 : 82 6/8.
Pot 5 : 90 5/8 : 83 6/8.

Total : 1037.00 : 973.16.

The average height of the thirteen self-fertilised grandchildren of Hero
is 79.76 inches, and that of the grandchildren from a cross between the
self-fertilised children is 74.85; or as 100 to 94. But in Pot 4 one of
the crossed plants grew only to a height of 15 1/2 inches; and if this
plant and its opponent are struck out, as would be the fairest plan, the
average height of the crossed plants exceeds only by a fraction of an
inch that of the self-fertilised plants. It is therefore clear that a
cross between the self-fertilised children of Hero did not produce any
beneficial effect worth notice; and it is very doubtful whether this
negative result can be attributed merely to the fact of brothers and
sisters having been united, for the ordinary intercrossed plants of the
several successive generations must often have been derived from the
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