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Show ' 194 PETUNIA VIOLAOEA. CHAP. VI. (ra£sed from the Plants in Put I., Table LXXIX.).-Orossed and self-fertilised seeds from plants of tho last generation in Pot I., in Table LXXIX., were placed on sand, and after germinating, were planted in pairs on the opposite sides of four pots. The seedlings when in full flower were measured to the base of the calyx. The remaining seeds were sown crowded on the two sides of Pot V.; and the four tallest plants on each side of th1s pot were measu~ed in the same manner. TABLE LXXX. Petunia violacea (Fourth Generation ; raised f rom Plants of the Third Generation in Pot L, Table LXXIX.). No. of Pot. Crossed Plants. Self-fertilised Plants. -- -- -- Inch<'s. I nches. I. 29 § 30~ 36§ 34 6 49 31~ II. 33a 31~ 37 ~ ,38g 56 ~ 38 3 III. 46 45~ 67§ 45 5 4~ 23g IV. 51R 34 51 ~ 0 v. 49 ~ 22~ Crowded plants. 4 6~ 24i 40 24~ 53 30 Total in inchf)s, I 701•88 I 453·50 The fifteen crossed plants average 46 · 79, and the fourteen (one having died) self-fertilised plants 32 · 39 inches in height; or as 100 to 69. So that the crossed plants in this generation had recovered their wonted superiority over tho self-fertilised plants; though the parents of the latter in Pot I., Table LXXIX., were a little taller than their crossed opponents. . Crossed and self1ertilised P tants of the Fow·th Generatwn OHAP. VI. CROSSED AND SELF-FERTIIJISED PLANTS. 195 (raised from the Plant.r; in Pot TV., .in Table LXXIX.).-Two similar lots of seeds, obtained from the plant~ in Pot IV. in Table LXXIX., in which the single crossed plant was at first shorter, but ultimately much taller than its self-fertilised opponent, were treated in every way ljke their brethren of the same generation in the last experiment. We have in the following Table LXXXI. the measurements of the present plants. Although the crossed plants greatly exceeded in height the selffertiiised; yet in three out of the five pots a self-fertilised plant flowered before any one of the crossed ; in a fourth pot simultaneously; and in a fifth (viz., Pot II.) a crossed plant flowered first. TABLE LXXXI. Petunia violacea (Fourth Generation ; raised from Plants of the Third Generation in Pot IV., Table LXXIX.). No. of Pot. I Crossed Plants. Self- fPrtili:>ed Plants. --- Inches. Inches. I. 46 30ff 46 28 II. soH 25 40§ 3q 37 ~ 22~ III. 54 ~ 22§ 6q 26 ~ 45 32 IV. 30 28~ 29k 26 V. 37 ~ 40§ Crowded plants. 63 18~ 41 i 17 ~ Total in inches. 581•63 349•36 The thirteen crossed plants here average 44 · 7 4, a~d the thirteen self-fertilised plants 26 · 87 inches in height; or as 100 to 60. The crossed parents of these plants were much taller, relatively to the self-fertilised parents, than in the last case; and apparently they transmitted some of this superiority to their 0 2 |