the self-fertilised appeared decidedly more numerous than those from the crossed plants. CROSSED AND SELF-FERTILISED PLANTS OF THE SEVENTH GENERATION. Crossed and self-fertilised seeds from the crossed and self-fertilised plants of the sixth generation were sown in the usual manner on opposite sides of three pots, and the seedlings were well and equally thinned. Every one of the self-fertilised plants (and many were raised) in this, as well as in the eighth and ninth generations, belonged to the tall white variety. Their uniformity of character, in comparison with the seedlings first raised from the purchased seed, was quite remarkable. On the other hand, the crossed plants differed much in the tints of their flowers, but not, I think, to so great a degree as those first raised. I determined this time to measure the plants on both sides carefully. The self-fertilised seedlings came up rather before the crossed, but both lots were for a time of equal height. When first measured, the average height of the six tallest crossed plants in the three pots was 7.02, and that of the six tallest self-fertilised plants 8.97 inches, or as 100 to 128. When fully grown the same plants were again measured, with the result shown in Table 3/18. TABLE 3/18. Mimulus luteus (Seventh Generation). Heights of Plants in inches: Column 1: Number (Name) of Pot. Column 2: Crossed Plants. Column 3: Self-fertilised Plants. Pot 1 : 11 2/8 : 19 1/8. Pot 1 : 11 7/8 : 18. Pot 2 : 12 6/8 : 18 2/8. Pot 2 : 11 2/8 : 14 6/8. Pot 3 : 9 6/8 : 12 6/8. Pot 3 : 11 6/8 : 11. Total : 68.63 : 93.88. The average height of the six crossed is here 11.43, and that of the six self-fertilised 15.64, or as 100 to 137.