126 



MODIFIED CIECUMNUTATION. Chap. VIIL 



blinds being left suspended. In Fig. 173 the course pursued, 

 between 8.9 a.m. and 7.10 p.m., by one cf the hypoeotyls thus 



fig. 173. 



'OLltU 



8°25' 



Brassica oleracea : heliotropic movement and circumnutation of a hypocotjl 

 towards a very dim lateral light, traced during 11 hours, on a horizontal 

 glass in the morning, and on a Tertioal glass in the evening. Figure 

 reduced to one-third of the original scale. 



exposed is shown. It may be observed that during the first 

 \& m. the hypocotyl moyed obliquely from the light, and this, 



