HOW SOME PLANTS GET UP IN THE WORLD 101 



opposite direction. Two hours thereafter, the shoot 

 had uncoiled itself and the tip r as seen in- the 

 picture, was again resuming its natural direction. 



FIG. 102. 



FIG. 103. 



FIG. 104. 



Japanese hop, with Morning-glory, against Morning-glory refus- 

 the sun. the sun. ing to twine with 



the sun. 



