30 



TWINING PLANTS. 



Chap. I. 



(Dicotyledons, continued.) 



Adhadota cydonmfolia (Acanthacese) follows the sun. A young 

 shoot made a semicircle in 24 hrs.; subsequently it made a 

 circle in between 40 hrs. and 48 hrs. Another shoot, however, 

 made a circle in 26 hrs. 30 m. 



Mikania scandens (Compositae) moves against the sun. 



H. H. 



March 14, 1st cii-cle was made in 3 10 



April 



15, 2nd 



16, 3rd 



17, 4th 

 7,5th 



7,6th 



3 

 8 

 3 33 



2 50 



2 40 



[This circle was made 

 after a copious water- 

 ing with cold water at 

 47° Fahr. 



Combretum argenteum (Combretaoeaj) moves against the sun. 

 Kept in hothouse. 



H. H. 



I Early in morning, when 

 the temperature of the 

 house had &Ilen a httle. 



24, 2 circles each at an) 



2 20 



average of . 

 „ 25, 4th circle was made in 2 25 



Combretum purpureum revolves not quite so quickly as C. 

 argenteum. 



Loasa aurantiaca (Loasaceas). Eevolutions variable in their 

 course : a plant which moved against the sun. 



