5iiim- 



5mm- 



5mm- 1 





2 4 6 8 10 12 2 4 6 8 10 12 

 P.M. A.M. 



5mm 



lOmm-f 

 5m.m ' 



i 



2 4 6 8 10 12 2 4 6 8 10 12 

 P.M. A.M. 



■ ■ 



2 4 6 8 10 12 2 4 6 8 10 12 



P.M. 



A.M. 



Fig. 22. Curve of growth of scape of Arisaeina triphylliim in dark room at con- 

 stant temperature of 17 to 19° C. (See Fig. 23.) 



