CHAP. X. 



GEOTROPISM. 



519 



represented four ellipses. Lastly, a long gynophore, the apex of 

 which had buried itself to the depth of about half an inch, was 



Fig. 194. 



Fig. 193. 



Arachis hypogcei : circiim- 

 nutation of vertically 

 dependent young gyno- 

 phore, traced on a ver- 

 tical glass from 10 A.M. 

 July 31st to 8 A.M. Aug. 

 2nd. 



Arachis hypogcea : down- 

 ward movement of same 

 young gynophore, after 

 being extended horizon- 

 tally ; traced on a vertical 

 glass from 8.30 A.M. to 

 8.30 P.M. Aug. 2nd. 



pulled up and extended horizontally : it quickly began to curve 

 downwards in a zigzag line ; but on the following day the tor- 



