The fertility, therefore, of the two legitimate unions together to that of the two illegitimate unions, as judged by the proportional number of flowers which yielded capsules, is as 100 to 84. Judging by the average weight of seeds per capsule produced by the two kinds of unions, the ratio is as 100 to 63. On another occasion a large number of flowers of both forms were fertilised in the same manner, but no account of their number was kept. The seeds, however, were carefully counted, and the averages are shown in the right hand column. The ratio for the number of seeds produced by the two legitimate compared with the two illegitimate unions is here 100 to 53, which is probably more accurate than the foregoing one of 100 to 63. TABLE 1.11. Primula Sinensis (from Hildebrand). Column 1: Nature of the Union. Column 2: Number of Flowers fertilised. Column 3: Number of good Capsules produced. Column 4: Average Number of Seeds per Capsule. Long-styled by pollen of short-styled. Legitimate union : 14 : 14 : 41. Long-styled by own-form pollen, from a distinct plant. Illegitimate union : 26 : 26 : 18. Long-styled by pollen from same flower. Illegitimate union : 27 : 21 : 17. Short-styled by pollen of long-styled. Legitimate union: 14 : 14 : 44. Short-styled by own-form pollen, from a distinct plant. Illegitimate union : 16 : 16 : 20. Short-styled by pollen from the same flower. Illegitimate union : 21 : 11 : 8. SUMMARY: The two legitimate unions together : 28 : 28 : 43. The two illegitimate unions together (own-form pollen): 42 : 42 : 18. The two illegitimate unions together (pollen from the same flower ): 48 : 32 : 13. Hildebrand in the paper above referred to gives the results of his experiments on the present species; and these are shown in a condensed form in Table 1.11. Besides using for the illegitimate unions pollen from a distinct plant of the same form, as was always done by me, he tried, in addition, the effects of the plant’s own pollen. He counted the seeds.