90 The Philippine Journal of Science i 923 



Table 2. — Nocturnal, diurnal, and twenty-four-hour average rates of leaf 

 elongation for each of the five days, arranged in the descending order 

 of magnitude in each case. 



— -- 



d^u™^ 



!»■.«_. 



^"cedTnfaa^ 6 - 



Fifth day 



First day 



Fourth day.... 



i: 



Third day 



fl 



Fifth day 



i:i 



Secondday... 

 Fourth day.... 

 Third day 



11 



It is seen from Table 2 that, judging by the three average 

 rates, the first day appears to have been generally much better 

 for leaf elongation than was the fourth. The fifth day was 

 apparently about as good as the first. It seems unsafe to at- 

 tempt any more-detailed suggestions from these averages. 



Another way to approach the same question was also tried. 

 Each of the three series of elongation increments (fifty in each 

 series) was arranged in the descending order, each value being 

 accompanied by the number of the day in which it was obtained. 

 Then the distributional frequency of the several day numbers 

 was studied for the upper and the lower portion of each series. 

 In all three series, day 4 had high frequencies among the low 

 rate values and very low frequencies among the high values. 

 The frequencies of the five day numbers were otherwise without 

 suggestion in this connection. There was no evidence that the 

 first day had exceptionally high values. 



From these results it appears that the evidence is fairly 

 strong that the conditions of the fourth day were characterized 

 as poor for leaf elongation, with the added suggestion that pos- 

 sibly those of the first day were peculiarly good. 



Table 3.— Climatic data for period 



/ growth measurements. 



D ., 



—. 



T.n.p.r.tu™. 



Maitam. | Mtalmm.. 



Mean. 



May 14 



iii 



ll:l a'. 



5 









May 19 





