[113]

Sep 19

Mimosa angle between 2r.y petioles

From 12.23 pm to 4.14 pm the angle between the lea petioles changes from 61° [-] 54 [=] 7° to 54°; during this interval 3 of 3hrs 51 m ten observations were made which show that the angle sometimes diminishes & then increases again & so on.

The 10 observations are

61° [-] 56 [=] -5°, 56°, 61 [-] 45° [=] -16°, 47° + 2°, 45 52° [-] 45 [=] +7, 52 [-] 49° [=] -3°, 54° +5., 52° -2, 55° +3°, 54° -1,

   (1)    (2)    (1)   (2)  (1)  (2)  (1)

From 4.14 to 6.45 the angle diminished & at 6.45 it was only 2°; this diminution was apparently steady as the angle was always smaller & smaller & never got big again {except once when it increased by 2° which may be an observation error}

The observations were not so more numerous in the evening as by 10 10 being made from 4.25 to 6.45 ie in 2 hrs 20mn

Temperature 20° to 23°C

On the following day observations f not so frequent but the angle was certainly more constant which may have to do with slightly lower temperature

120 [+] 20 [=] 140

[114]

Nutation of primary petiole

Mimosa pudica No 1 Sep 28

Grass stalk which is the index projecting 75mm beyond fork of 2ndy petioles; looking & points to the main light — vertical glass — Sun & clouds — Thermometer hung close by. No fixing wanted to plant decimals of estimated old 110.0

Dot

Nro—           am       Temp

 1 ‒            9.42

 2      9 46—θ           20.9C

 3 ‒            9 54  

 4   1

 3

9

 4      9 59—               —26'C

 5      10.1—               —27.2C

 6      .10.3 & 10.19

 7      10.7 big one       27.2C

 8      10 13 & 19—    25.3C

 9      10.34—              23C

 10.   10.46.

 11    |10 51  close above     9   26.2C

51 [-] 42 [=] 9

verticall by memory

1

2

3

4

5

6

7

8

9

10

this angle is 21mm above 2

9 1/2 ellipses in 69'.

From glass to joint of Mim 125 mm about main petiole

[114v]

S

S 19

M 20

TU 21

W — 22

Th 3

F 4

S 5

[115]

Dr H Sep 28 Mimosa

H   old 100 θ

 

Dot                  θ

1 .        10.53   31.8C

  2        11.2     29.9°C

  3        11.3     clouds & sun

  4.       11.4

  5 .      11.5

  6        11. 6 —           30°C

↑5 .      11.8

  7.       11. 11.

  8.       11 16 1/2         30.5θ

Cloudy

  9        11 21  

  10.     11. 27 θ28.8θ

  11.     11.30   cloudy

            leaflets half shut lately

  12      11. 34

  13      11 42.   below 9       27.2

  14      11 47

15     just n of 13 again 11. 54         the two dots would touch 26 4

   16     11.57   cloudy

   17.    12.0   big one          

   18     12.2

   19     12.3     26.3θ

   20     12.5 1/2.

   21     12.7     .rt of two big ones

   22     12.10. 26.5

  1° 17' — more than 3 ellipses on the line

    27°—30° C.

    81°—86°

 

Sep 28 Mimosa

In hot closet pointing nearly away from light

joint to glass = 210 213 248mm 224 [+] 24 [=] 248

tip to glass =   35

fork to tip   = 151mm

joint to fork   213 58 58 mm

209

glass

tip

grass

fork

joint

 

multiplied about 4 tim[excised]

vertical

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

 

9 46

10. 7 – 49

10   5 – 48

11   6  47

11   15   off leaves

11   50    47

  wet    52

[116]

Mimosa Hot case (2) Sep 28
grass quite square to glass leaflets shut but not so the 2ndy petioles

          PM      Temp

1.         5.31 .   θ 27.4C

2.         5.35       Temp

3.         5.35 1/2           27.7°C

4          544 1/2 —           27.9C

5 —    5.54

6 ―    5.51 1/2.          27.9°C

7.         6.0.

8.         6.5 —           28.0

9.         68 1/2

10.       6.15     28 put a lighted candle up

about 20cm from joint

& plane of sleep movement

11.       6.18

12        6.26

13        6.34     |28.3 θ

14.       6.38

15 — 642

16        46        secondary petioles nearly shut

17        47 ―   28.6°C

18        50

19 –     7'0       28.9°C

20 –     7.3 1/2

21.       7.6 1/2

22.       7.10

23       7.12 1/2           13 . 29

 

 Some of grass cut to lighten it because it was apparently weighed down

1.         9 58     θ. 31.

2.         10.0

3.         10 3

4'         10 5

5.         10 8

6.         10 11

7          10 2015     31.9

8          10 18

9 –       10 21           top of big dot

10.       23

11–      25 —   31.5θ

12.       28

13        30 1/2

14        34'

15.       36?      31.9θ

16.       39

17        42. ?

18        45 ?

19        47

20—    .51

21—    54—    31.4

22

23

24

25

26

copied

 

Fork of 2nd petioles to tip of grass = 92

joint of main —"—  to  —"—  = 150

glass to joint petiole when Horizont 226

joint to fork  58mm

joint to tip grass 150

150 [-] 582 joint [=] 93

[117]

Mimosa ‒ main petiole (traced by foreshortening a grass index, on vertical glass

Hot case No 3, I found the leaf weight down & cut off some of the grass & moved plant nearer light glass. Fork of 2ndy petioles to tip of grass = 92mm

Joint of movement of main petl to ditto 150

Joint to fork ie (real moving arm) 58

Joint to glass when petiole Horizontal 226

when horizontal it multiplies 226 [÷] 58 times; about 4 times

 C   PM  
9.58 1   θ. 31
2 – 10.2
3— 10.3
4— 10.5
5— 10.8
6— 10.11
31.9 7— 10 15 —
8— 10 18
10.21 9
10— 10 23
11— 10 25 — 31.5
12 10 28
13 10 30 1/2
14— 10 34
36.(?) 15.  
16— 10.39
10 42.? 17.  
18 —10 45.?
10 47 19  
20— 10 51
31.4.  10 54.  21  


5. 31 pm to 7. 10 pm
A

→ 1 →
10
20


vertical
B
9. 58 pm to 10 54 pm

1
2
3
4
5
6
7
8
9
10
11
12
13
14 X
15
16
17
18
19
20
21

see tracing B