Canna warscewiczi--crossed and self-fertilised flowers (on three generations of crossed and self-fertilised plants taken all together) yielded seeds as: 85. Table 9/G gives the relative fertility of flowers on crossed plants again cross-fertilised, and of flowers on self-fertilised plants again self-fertilised, either in the first or in a later generation. Here two causes combine to diminish the fertility of the self-fertilised flowers; namely, the lesser efficacy of pollen from the same flower, and the innate lessened fertility of plants derived from self-fertilised seeds, which as we have seen in the previous Table 9/D is strongly marked. The fertility was determined in the same manner as in Table 9/F, that is, by the average number of seeds per capsule; and the same remarks as before, with respect to the different proportion of flowers which set capsules when they are cross-fertilised and self-fertilised, are here likewise applicable. TABLE 9/G.--RELATIVE FERTILITY OF FLOWERS ON CROSSED AND SELF-FERTILISED PLANTS OF THE FIRST OR SOME SUCCEEDING GENERATION; THE FORMER BEING AGAIN FERTILISED WITH POLLEN FROM A DISTINCT PLANT, AND THE LATTER AGAIN WITH THEIR OWN POLLEN. FERTILITY JUDGED OF BY THE AVERAGE NUMBER OF SEEDS PER CAPSULE. FERTILITY OF CROSSED FLOWERS TAKEN AS 100. Column 1: Name of plant and feature observed. Column 2: x, in the expression, 100 to x. Ipomoea purpurea--crossed and self-fertilised flowers on the crossed and self-fertilised plants of the first generation yielded seeds as: 93. Ipomoea purpurea--crossed and self-fertilised flowers on the crossed and self-fertilised plants of the 3rd generation yielded seeds as: 94. Ipomoea purpurea--crossed and self-fertilised flowers on the crossed and self-fertilised plants of the 4th generation yielded seeds as: 94. Ipomoea purpurea--crossed and self-fertilised flowers on the crossed and self-fertilised plants of the 5th generation yielded seeds as: 107. Mimulus luteus--crossed and self-fertilised flowers on the crossed and self-fertilised plants of the 3rd generation yielded seeds as (by weight): 65. Mimulus luteus--same plants of the 3rd generation treated in the same manner on the following year yielded seeds as (by weight): 34. Mimulus luteus--crossed and self-fertilised flowers on the crossed and self-fertilised plants of the 4th generation yielded seeds as (by weight): 40. Viola tricolor--crossed and self-fertilised flowers on the crossed and self-fertilised plants of the 1st generation yielded seeds as: 69. Dianthus caryophyllus--crossed and self-fertilised flowers on the crossed and self-fertilised plants of the 1st generation yielded seeds as: 65. Dianthus caryophyllus--flowers on self-fertilised plants of the 3rd generation crossed by intercrossed plants, and other flowers again self-fertilised yielded seeds as: 97.