126 



MODIFIED CIECUMNUTATION. 



Chap. VUL 



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

 botwucu 8.9 A.M. and 7.10 p.m., by one cf the bypocotyls tlius 



Brassica oleracea ; heliotropic movement and circumnutation of a hypocoty! 

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

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

 reduced to unc-third of the original scale. 



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

 16 m. the hypocotyl moved obliquely from the light, and this, 



