[10]

(Used)

Amphicarpæa [sketch]

transverse filament to terminal left

July 10th 8.55 Le leaflet dependent

10° down

11.37 down & to right

1° down

2° far to right — Light

3° to left & up — back

4° vertically down— leaf almost Horizontal

5° far to left & little e up

6 same course

7° 15 vertically up (leaf vertically down & asleep

9° far to right & down (—yet asleep)

10.40' far to left

11th 6. 37

8° up & to right (leaf horizontal

9.8' back & to left & down parallel

10 up & to left parallel to right line

11.3 to right

12 to right & little down

1° up & to left

2° down

3. up & to right (leaf Horizontal but laminæ inclined

4 to left & down

5° 15 to left & up

6.14 a good way to left leaf 1/2 asleep

7.16 to left & up nearly asleep

8.5 up— leaf almost vertically down & asleep

8 38 to right

9 10 to left & up

10.3 down & to left

10.53 down & to right +

12th 6.40'

8° 5 up & to right

9. 5 to left Leaflet nearly Horizontal

706

[left side of page excised]

E 1 10

ter and greater degree of dif=

Cells which conjugate can

apparently to the development

.* (a) We have also seen that

highly developed and [illeg]

they would be compelled to

in order to intercross. There=

have not since been greatly

be both diclinous and anemo=

s understand the connexion

s, although they appear at

ected. If this view is correct

rendered hermaphrodites at a later

later period entomophilous,

f winged insects, So that

hermaphroditism and ferti=

insects is likewise to a certain

ndents of plants which were

[Cross and self fertilisation, pp. 409-10: "It is indeed difficult to avoid this conclusion, if we admit the view, which seems highly probable, that the conjugation of the Algae and of some of the simplest animals is the first step towards sexual reproduction; and if we further bear in mind that a greater and greater degree of differentiation between the cells which conjugate can be traced, thus leading apparently to the development of the two sexual forms.† We have also seen that as plants became more highly developed and affixed to the ground, they would be compelled to be anemophilous in order to intercross. Therefore all plants which have not since been greatly modified, would tend still to be both diclinous and anemophilous; and we can thus understand the connection between these two states, although they appear at first sight quite disconnected. If this view is correct, plants must have been rendered hermaphrodites at a later though still very early period, and entomophilous at a yet later period, namely, after the development of winged insects. So that the relationship between hermaphroditism and fertilisation by means of insects is likewise to a certain extent intelligible."]