[23]

Smithia pfundii

—apex

glass

 

 

Left Hand Transverse filament           Right Hand —

shoot at rt angles         long filament shoot depending beneath right angle

July 10 8° 50' first dot            July 10th 8° 50' first

10° to left & up           10° up

11. 35 to left   11 . 35 up & to right

1° to left & little up    1° to right

2° up    2° down

3° to right        3° up again

4° to right        4° far up ( this means shoot depressed at apex

5° same course            5 very far up

6 to right & little down           6° so high cannot be traced do — near frame

7. 15 almost same spot            7°. 15 close to frame, still up.—

9° up & to left             9 . mark on frame.

10. 40 up & to right    10° 40 a little down

 

11th 6° 35       11th 6° 35

8° little up       8° a good way down.

9. 7 do & to right        9. 7 far down

10 to right       10' far down

11° little to right         11' little down

12 up & little to right 12

1° nearly same course             1° do a little to left

2° to right & little down         2° up down

3— same course         3° straight down

4° to right & up — (whole shoot is rising which account for twisting to right. & zigzags.       X 4°  down— this due to shoot rising now at rt angles

5 .10 to right & down             5° 10 down

6. 10 down      6. 10 down

7. 15 to right & down             7° 15 do

9 . 14 . up        9 14 . to left & down

10. 50 down parallel   10 50 down & to R

Height of Plant 1.ft 5in           Height of Plant 1.5 ft inch

ft 1. 10 inches

            Distance 9½ inchs — I cannot measure shoot)

 

12th 6°. 35 ⨀ 12th 6°. 35' up & back

8° to left .        8° down

9° 3' to right & back a little (straightening)   9 . 3 far down & little to left (straightening rapidly)

10 . 5 up & to right     10. 5 do.

11 . 10 a little up .       11 . 10' far do

11. 55 down    11' 55 down & to left ( Straw may have caught)

1° do    1° considerably up .

2 a little to right & uppish      2° up

3 considerably up & to left     3' to left & little down

4 — down up & to left         4° down

5 down            5 . 4 down & to right

6 to left & down         6 . much down & to R.

7. 15 little way to left             7. 15 20 far to right : great lateral circumnutation

9 . 5 far to left & down

            10 . 35 very far down: almost guess-work

 

13. 6° 40 far down due to slewing of fibre     13' 6° 40 up again

            8 10 down & to right

 

(Distance of shoot 6 inchs fr vertical glass)

[23v]

94 705

Chap. E 10

of insects having the power to carrying pollen to another and sometimes distant plant much more securely than can the wind.

In the above two classes taken together there are 38 anemophilous and 36 entomophilous genera; whereas in the great mass of hermaphrodite plants the proportion of one anemophilous to entomophilous species genera is very extremely small.

The cause of this remarkable difference may be attributed to anemophilous plants being having retained to a a primordial condition, in which the sexes were separated and 205 (fertilisation was effected by means of the wind, in a greater degree, than entomophilous plants. That the earliest and lowest plants had their sexes separated; as is still the case to a large extent with the more lowly organised forms, is the opinion of a high authority of Nägeli.* (*Entesthung und Begriff der Naturalist. Art. 1865. p. 22)

It is indeed difficult to avoid this conclusion, if we admit the extremely probable view that the conjugation of the Algæ and of many infusoria some of the simplest animals, is the first step towards sexual reproduction; and if we further bear