270

Petunia

bl means below

ab means above

 Petunia     bl means below horizon   

  ab   —"—  above    

 

Glass filament  

fixed near the  

end of the leaf  

Measured with  

protractor   

 

            Jan 21

2·15 pm           Jan 21

10·15 pm         Jan 22

  12·20

  noon Jan 22

10·13 pm         Jan 23

  12·30

  noon Jan 23

10·15 pm         Jan 24

  12·15

  noon

Old        10°ab               7ab      1bl       6bl       14bl     15bl     17bl

Young Rt          15°bl   4ab      10bl     1ab      18bl     1ab      12bl

Young Left        31ab   25ab   25ab   13ab   13bl     Hor      13ab

Angle between

Rt and left }      164°     151°     165°     166°     211°     179°     179°

 

Thus there is no regularity in the movement of the old leaf. There seems to be an irregular tendency for the angle between the young leaves to diminish at night

Glass filament fixed near the end of the leaf measured with protractor

Thus there is no regularity in the movement of the old leaf. There seems to be an irregular tendency for the angle between the young leaves to diminish at night