Reseda odorata--crossed and self-fertilised plants, left uncovered and cross-fertilised by bees; produced capsules in number (about): 100. Viola tricolor--crossed and self-fertilised plants, left uncovered and cross-fertilised by bees, produced capsules in number: 10. Delphinium consolida--crossed and self-fertilised plants, left uncovered in the greenhouse, produced capsules in number: 56. Viscaria oculata--crossed and self-fertilised plants, left uncovered in the greenhouse, produced capsules in number: 77. Dianthus caryophyllus--plants spontaneously self-fertilised under a net; capsules on intercrossed and self-fertilised plants of the 3rd generation contained seeds in number: 125. 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.