2l6 



ZONES AND REGIONS 



[Pt. III. Sect. I 



drawn, namely, that certain tropical plants exceed all known temperate 

 plants in rapidit\- of growth. 



Fig. 113. Dendrocalamus giganteiis in the botanic gatdcn at Peradeniya in Ceylon. 

 From a pliotograpli. 



Certain bamboos must be numbered among the representatives of tin 

 vegetable kingdom that grow most rapidl}-. Wallich mentions tha, 

 a shoot of Bambusa arundinacea increased in length about 7 meter! 



