[72.1]

[Letter not transcribed]

[72.1v]

Mimulus

122

in the later self-fertilised generations to the complete exclusion of the original shorter kinds kinds varieties. The same variety also appeared amongst the crossed plants, and as I did it was not at first pay regarded with any particular attention to it, I know how far I it was used it in crossing for raising the intercrossed plants; but in the later crossed generations it did not occur frequently amongst them was not often present. Owing to the appearance of this tall variety the comparison of the crossed and self-fertilised plants of the fifth and succeeding generations was rendered unfair, as all the self-fertilised and only a few or more of the crossed plants consisted of the tall variety it. Nevertheless the results are of the later experiments are in some respects well worth giving.

Crossed and self-fertilised plants of the fourth generation.─ (Mimulus luteus) Seeds of the two kinds produced in the usual way from the two sets of plants of the third generation, were sown on opposite sides of two pots, (I and II); but they seedlings were not thinned enough, and were in consequence poor specimens did not grow vigorously well.

Many of the self-fertilised plants, especially in one of

[Cross and self fertilisation, p. 67: "In the next or fourth self-fertilised generation, several plants of a new and tall variety appeared, which increased in the later self-fertilised generations, owing to its great self-fertility, to the complete exclusion of the original kinds. The same variety also appeared amongst the crossed plants, but as it was not at first regarded with any particular attention, I know not how far it was used for raising the intercrossed plants; and in the later crossed generations it was rarely present. Owing to the appearance of this tall variety, the comparison of the crossed and self-fertilised plants of the fifth and succeeding generations was rendered unfair, as all the self-fertilised and only a few or none of the crossed plants consisted of it. Nevertheless, the results of the later experiments are in some respects well worth giving.
Crossed and self-fertilised Plants of the Fourth Generation.—Seeds of the two kinds, produced in the usual way from the two sets of plants of the third generation, were sown on opposite sides of two pots (I. and II.); but the seedlings were not thinned enough and did not grow well. Many of the self-fertilised plants, especially in one of the pots, consisted of the new and tall variety above referred to, which bore large and almost white flowers marked with crimson blotches. I will call it the White variety."]

[72.2]

[Letter not transcribed]