Ipomoea purpurea—fifth generation: seeds per capsule on crossed and self-fertilised plants, left uncovered in the hothouse, and spontaneously fertilised: 89.
Ipomoea purpurea—ninth generation: number of capsules on crossed plants to those on self-fertilised plants, spontaneously self-fertilised under a net: 26.
Mimulus luteus—an equal number of capsules on plants descended from self-fertilised plants of the 8th generation crossed by a fresh stock, and on plants of the 9th self-fertilised generation, both sets having been left uncovered and spontaneously fertilised, contained seeds, by weight: 30.
Mimulus luteus—productiveness of the same plants, as judged by the number of capsules produced, and the average weight of seeds per capsule: 3.
Vandellia nummularifolia—seeds per capsule from cleistogene flowers on the crossed and self-fertilised plants, in number: 106.
Salvia coccinea—crossed plants, compared with self-fertilised plants, produced flowers, in number: 57.
Iberis umbellata—plants left uncovered in greenhouse; intercrossed plants of the 3rd generation, compared with self-fertilised plants of the 3rd generation, yielded seeds, in number: 75.
Iberis umbellata—plants from a cross between two varieties, compared with self-fertilised plants of the 3rd generation, yielded seeds, by weight : 75.
Papaver vagum—crossed and self-fertilised plants, left uncovered, produced capsules, in number: 99.
Eschscholtzia californica—Brazilian stock; plants left uncovered and cross-fertilised by bees; capsules on intercrossed plants of the 2nd generation, compared with capsules on self-fertilised plants of 2nd generation, contained seeds, in number: 78.