Dianthus caryophyllus—­plants left uncovered and cross-fertilised by insects:  offspring from plants self-fertilised for three generations and then crossed by an intercrossed plant of the same stock, compared with plants of the 4th self-fertilised generation, produced seeds by weight:  73.

Dianthus caryophyllus—­plants left uncovered and cross-fertilised by insects:  offspring from plants self-fertilised for three generations and then crossed by a fresh stock, compared with plants of the 4th self-fertilised generation, produced seeds by weight:  33.

Tropaeolum minus—­crossed and self-fertilised plants, left uncovered in the greenhouse, produced seeds in number:  64.

Limnanthes douglasii—­crossed and self-fertilised plants, left uncovered in the greenhouse, produced capsules in number (about):  100.

Lupinus luteus—­crossed and self-fertilised plants of the 2nd generation, left uncovered in the greenhouse, produced seeds in number (judged from only a few pods):  88.

Phaseolus multiflorus—­crossed and self-fertilised plants, left uncovered in the greenhouse, produced seeds in number (about):  100.

Lathyrus odoratus—­crossed and self-fertilised plants of the 2nd generation, left uncovered in the greenhouse, but certainly self-fertilised, produced pods in number:  91.

Clarkia elegans—­crossed and self-fertilised plants, left uncovered in the greenhouse, produced capsules in number:  60.

Nemophila insignis—­crossed and self-fertilised plants, covered by a net and spontaneously self-fertilised in the greenhouse, produced capsules in number:  29.

Petunia violacea—­left uncovered and cross-fertilised by insects:  plants of the 5th intercrossed and self-fertilised generations produced seeds, as judged by the weight of an equal number of capsules:  86.

Petunia violacea—­left uncovered as above:  offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the 5th self-fertilised generation, produced seeds, as judged by the weight of an equal number of capsules:  46.

Cyclamen persicum—­crossed and self-fertilised plants, left uncovered in the greenhouse, produced capsules in number:  12.

Anagallis collina—­crossed and self-fertilised plants, left uncovered in the greenhouse, produced capsules in number:  8.

Primula veris—­left uncovered in open ground and cross-fertilised by insects:  offspring from plants of the 3rd illegitimate generation crossed by a fresh stock, compared with plants of the 4th illegitimate and self-fertilised generation, produced capsules in number:  5.

Same plants in the following year:  3.5.

Primula veris—­(equal-styled variety):  left uncovered in open ground and cross-fertilised by insects:  offspring from plants self-fertilised for two generations and then crossed by another variety, compared with plants of the 3rd self-fertilised generation, produced capsules in number:  15.