Chap. III. 



LEGUMINOS^}. 



113 



observed the completion of an ellipse in 1 hr. 20 m. ; 

 and I saw one completed in 1 hr. 30 m. The direction 

 followed is variable, either with or against the sun. 

 Dutrochet asserts that the petioles of the leaves 



Side of room with window. 



Fig. 6. 



Diagram showing the movement of the upper internode of the common Pea, traced on 

 a hemispherical glass, and transferred to paper; reduced one-half in size. (Aug. 1st.) 



No. 



1 . 



2 . 



3 . 



4 . 



5 . 



6 . 



7 . 



8 . 



H. M. 



16 

 

 



37 

 7 



30 

 



30 



10 

 11 

 11 

 12 

 12 

 1 

 1 



M. 



55 

 25 





 30 

 48 

 40 



5 



H. M. 

 5 25 



5 50 



6 25 



P.M. 







45 



8 30 



9 15 



spontaneously revolve, as well as the young inter- 

 nodes and tendrils; but he does not say that he 

 6 



