34 



CIRCUMNUTATION OF SEEDLINGS. CHAP. I. 



narrow leaf, is shown during 24 h., in Fig. 24. No glass filament 

 was employed, but a mark was placed beneath the apex of the 

 leaf. The actual length of the longer of the two ellipses de- 

 scribed by the stem was about "14 of an inch. On the previous 

 day the chief lino of movement was nearly 8+ right angles to 

 that shown in the present figure, and it was more simple. 



Cassia tora* (Leguminosse). A seedling was placed before a 



Fig. 25 



Uaaria tora : conjoint cimimnutation of cotyledons and hypocotyl, traced 

 on vertical glass, from 7.10 A.M. Sept. 25th to 7.30 A.M. 26th. Figure 

 here given reduced to one- half of original scale. 



* Seeds of this plant, which 

 prew nc-iir the sen-side, were sent 

 to us by Fritz Miiller from S 

 liraziL Ti,e seedlings did not 



flourish or flower well with us; 

 they were sent to Kew, and were 

 pronounced not to be distinguish- 

 able from C. tora. 



