32<» SMITH : APPLICATION OF THE THEORY OF 



2._ DE\ DROC ALA MUS GIGANTEVS (THE GIANT 



BA MBOO). 

 Methods and Conditions of Measurements. 



Tiu- measurements of the growth of young culms of this 

 species were made in a similar manner to that used for Agave and 

 Kurcroea. The growth was marked off on one of the older 

 adult culms of the clump, and instead of placing the J-meter 

 -.ale on the extreme tips of the sheathing bracts, it was placed 

 on a level with the neck of the culm. _M/ 



This continued throughout a fairly definite and well-marked 

 point, while the tip of the longest bract was continually 

 changing and being replaced by the next. 



As the growth at Peradeniya had been so fully and clearly 

 described by R. H. Lock (12), attention was directed to the 

 growth of the same species at Hakgala in the Cold Moist 

 Region and at Anuradhapurain the Dry Region. Measurements 

 were taken later at Peradeniya also, but these only confirmed 

 l hose taken by Lock (12). 



The curves given in Plate 23 show the rate of growth per 

 two hours of Dendrocalamus giganteus on two occasions at 

 Hakgala, March 31st to April 2nd and July 10th to July 12th, 

 with the temperature and humidity for the same period. 

 These are the curves of the growth of single culms, the one 

 measured on the later occasion being in a different champ from 

 the one measured on March 31. 



Plate -1 -hows the growth of the same species at Peradeniya 

 from July (i to July 7. This curve represents the total growth 

 of five culms measured. The scale is reduced so as to compare 



accurately with the growth at EEakgala. 



Plate -l also gives the growth of the same species at Anu- 

 radhapura, June 19 t<> June 2<>. This curve represents the 



total growth of SIX culms and the scale is reduced so a* to be 



uratelv comparable wit h the <>t hers. 



The culm represented in Plate 23, measured on March 31 to 

 April 2, was the subject of continued observations from March 



