In all three pots a crossed plant flowered first. Nicotiana tabacum. A plant derived from a cross with a fresh stock flowered before any one of the self-fertilised plants of the fourth generation, in fifteen out of the sixteen pots. Cyclamen persicum. During two successive seasons a crossed plant flowered some weeks before any one of the self-fertilised in all four pots. Primula veris (equal-styled var.) In all three pots a crossed plant flowered first. Primula sinensis. In all four pots plants derived from an illegitimate cross between distinct plants flowered before any one of the self-fertilised plants. Primula sinensis. A legitimately crossed plant flowered before any one of the self-fertilised plants in seven out of the eight pots. Fagopyrum esculentum. A legitimately crossed plant flowered from one to two days before any one of the self-fertilised plants in all three pots. Zea mays. In all four pots a crossed plant flowered first. Phalaris canariensis. The crossed plants flowered before the self-fertilised in the open ground, but simultaneously in the pots. SPECIES OF WHICH THE FIRST PLANTS THAT FLOWERED WERE OF SELF-FERTILISED PARENTAGE. Eschscholtzia californica (First Generation). The crossed plants were at first taller than the self-fertilised, but on their second growth during the following year the self-fertilised exceeded the crossed in height, and now they flowered first in three out of the four pots. Lupinus luteus. Although the crossed plants were to the self-fertilised in height as 100 to 82; yet in all three pots the self-fertilised plants flowered first. Clarkia elegans. Although the crossed plants were, as in the last case, to the self-fertilised in height as 100 to 82, yet in the two pots the self-fertilised flowered first. Lobelia fulgens (First Generation). The crossed plants were to the self-fertilised in height only as 100 to 127, and the latter flowered much before the crossed. Petunia violacea (Third Generation). The crossed plants were to the self-fertilised in height as 100 to 131, and in three out of the four pots a self-fertilised plant flowered first; in the fourth pot simultaneously. Petunia violacea (Fourth generation). Although the crossed plants were to the self-fertilised in height as 100 to 69, yet in three out of the five pots a self-fertilised plant flowered first; in the fourth pot simultaneously, and only in the fifth did a crossed plant flower first. Nicotiana tabacum (First Generation). The crossed plants were to the self-fertilised in height only as 100 to 178, and a self-fertilised plant flowered first in all four pots. Nicotiana tabacum (Third Generation). The crossed plants were to the self-fertilised in height as 100 to 101, and in four out of the five pots a self-fertilised plant flowered first. Canna warscewiczi.