[45]

Feb 18th Cyclamen pod pod large already touching ground.)

[3 inches]

[sketch] dimly illuminated from vertically above

Used

11° 30' — after resting for 1/2 Hour

12 15 a little bit to left

12° 25' new dot— more magnified

1° 12 from light little (so called)

1° 12 new dot

2° 15 from light

3 from light & little to right

4° gone back to so-called light

5° 28 from light

6. same spot

7° 18 up again to light

8 22 from light— chief movement seem to be straightening of bowed peduncle

9. 42 to right— short way

10. 40 to light back; dot on old line

19th 6° 55'

7. 55' to light & back

9° from light a little

10 from light

11° to light so back

12' to right

1° to left & light

2° from light & to le left right

3. 7 atom to left

3. 55 big dot on old line

 

Peduncle stand straight up with apex arched over for flower to depend; the whole goes much after pod set & bows over so that pod touches ground; the hooked part straightens itself (other species become spiral). This specimen when peduncle was freed from stick was about 1/20' of inch from argillaceous sand. In 1 hour touched sand.

[45v]

(8

Introduction

that the ray florets of the Compositæ last for a long time, until all those on the disc are impregnated; & this clearly shows their use. of the ray florets. These ray florets however, are of service in another & very different manner, namely by fo folding inwards at night & during cold rainy weather, so as to protect the florets of the disc.*(e) Moreover they often contain matter which is excessively poisonous to insects, as we may be seen when we use flea-powder is used; & in the case

[Forms of flowers, pp. 5-6: "Most flowers wither soon after being fertilised, but Hildebrand states‡ that the ray-florets of the Compositæ last for a long time, until all those on the disc are impregnated; and this clearly shows the use of the former. The ray-florets, however, are of service in another and very different manner, namely, by folding inwards at night and during cold rainy weather, so as to protect the florets of the disc.* Moreover they often contain matter which is excessively poisonous to insects, as may be seen in the use of flea-powder, and in the case of Pyrethrum, M. Belhomme has shown that the ray-florets are more poisonous than the disc-florets in the ratio of about three to two.
‡ See his interesting memoir, 'Ueber die Geschlechtsverhältnisse bei den Compositen,' 1869, p. 92."]

[46]

Feb 19th— Cyclamen

3° 35' new dot— slided pot a trifle

5° to right

5' 48 to left & light

7. 15 to right

8 42 to left

10. 20 nearly same spot little from light

20th. 6.° 50'

8° from light

9' a bit to right

10° 5 a good way from light

11 to light

12 from light

1° to light up

2.20 from light & to right

3.° in middle of former curvatures

4° from light

5° gone back an atom on former line

6. 15' such a muddle of dots not recorded

9. 25 a good way to right

21' 6 55' Am

8' a.m.

.2 of inch

[calculation not transcribed] (47 times magnified)

[46v]

spring & autumn 15 trees growing [slip of paper pasted on] in one of my the same a field; & of them eight produced only male flowers alone and not a single seed in the autumn; four produced only female flowers, which set an abundance of seeds; and three were hermaphrodites, which had a different aspect from the other trees whilst in flower, and two of them produced nearly as many seeds as the female trees, whilst one the third produced more none; so that it was in function a male. The separation of the sexes, however, is not here quite complete in the ash; in the ash; and this accounts for the for the female flowers one include

[Forms of flowers, pp. 11-2: "I examined during the spring and autumn fifteen trees growing in the same field; and of these, eight produced male flowers alone, and in the autumn not a single seed; four produced only female flowers, which set an abundance of seeds; three were hermaphrodites, which had a different aspect from the other trees whilst in flower, and two of them produced nearly as many seeds as the female trees, whilst the third produced none, so that it was in function a male. The separation of the sexes, however, is not complete in the Ash; for the female flowers include stamens, which drop off at an early period, and their anthers, which never open or dehisce, generally contain pulpy matter instead of pollen."]