Chap. m. 



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 petiples of the leaves 



Side of room with window. 



Fig. 6. 



Diagram showing the movement of the npper intemode of the common Pea, traced on 

 a hemisphericaL glara, and transferred to paper; reduced one-lialf in size. (Aug. let.) 



No. 

 1 

 2 

 3 

 4 

 5 

 6 

 7 



H. X. 



1 fiS TM. 



2 25 „ 



3 48 



4 40 

 & G 



No. 

 16 . 

 IJ , 

 13 , 



19 , 



20 . 



21 , 



22 , 



B. H. 

 6 25 F.v. 



5 50 „ 



6 25 „ 

 J „ 

 1 45 „ 



8 30 „ 



9 15 „ 



spontaneously revolve, as well as the young inter- 

 nodes and tendrils; but he does not say that he 

 6 



