34 



CIECUMNUTATION 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 elhpses de- 

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

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

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

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



Fig. 25 



Cfasrii tora ; conjoint circumnutation of cotyledons and hypocotyl, traad 

 on vertical glas.9, 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 tl.is plant, which 

 grew neiir the sea-side, were sent 

 to us by Fritz Muller from S 

 Brazil. Ti,e seedlings did not 



flourish or flower well with us; 

 they were sent to Kew, and were 

 pronounced not to bo distinguish- 

 able from C. tora. 



