124 



MODIFIED CIECUMNUTATION. Chap. VIH 



Bimilar to the previous one. In these two oases there could be 

 no doubt that the ordinary circumnutating movement of the 

 hypocotyl was modified and rendered heliotropic. 



Fig. 171. 



ia:48 



to'.so'aat 



O'pnfn. 



SyS'a.m.r 



ia-50n.m. 



^^'ZS'^TJ"'^'- ]',':""*™P*'' ™«vetr.ent and circumnntation of the Htdc 



Bra^nca oleracea.-Tn.^ hypocotyl of the cabbage, when not 

 d.stm-bed by a lateral light, circumnutates in a ^mpKcated 



