[12]

Cobæa scandens Blackened ones of the terminal Branches [sketch]

Vertical glass

[sketch]

July 22 8° 10. first mark

11° up & to left

12 . 23 up & to right

12. 55 straight up

2. much up

3° do

4° do & to right

5 . 14 down & to right ?

6. down & to left

}

7. 15 down & to right— short way

8. 35 down

9. 25 to left & up

10 . 45 up— I think accurate

?

Used

July 23d 6° 50'

8°. 15' to right & down— — The leaf not perpendicular

9 . 10 little up

}

10. 10' same spot

11 5 up

12. 30 down parallel

1 . 30 up— parallel

plainly circumnutates

(do not do more till lat in evening or tomorrow

6° down & to right

24th 6° 40' ⨀ old Tendril injured — how regularly circumnutates,

  — 2°  ⨀ much fallen

25th 4°. 35' P.m ⊡

  6° far to left on model of former figure (not traced)

26th 6° 45 ⊡

[12v]

(46

Chapter II.

Convolvulaceæ

Ipomoea purpurea, comparison of the height & fertility of the crossed & self-fertilised plants during ten successive generations ─ greater constitutional vigour of the crossed plants ─ The Effects on the offspring of crossing different flowers on the same plants, instead of crossing distinct individuals ─ The Effects of a cross with a distinct & fresh stock─ The descendants of the self-fertilised plants named Hiro─ Summary on the growth, vigour & fertility of the successive crossed & self-fertilised generations ─ small amount of pollen in the anthers of the self-fertilised plants of the later generations & the sterility of their first-produced flowers ─ Uniform colour of the flowers produced by the self-fertilised plants ─The advantages from a cross between two distinct of plants depend on their differing in constitution or character.