492 



The Philippine Journal of Science 



1914 



Table XXIV. — Annual diameter growth of dipterocarps. Tree Cla^s I. 

 Type area A. Bataan Province, Luzon. 



[Figures are {riven in centimeters.] 



1 



Species. 



Diameter class in centimeters. 



1 

 10 to 20. 1 20 to 30. 



30 to 40. 



1 

 40 to 50. 



Diam- 

 eter. 



(--^-ri-i, Diam- 

 Growth. ^^^ 



Growth. 



«-- Growth. 



^^: Growth. 





18 8 nr,a 



23.2 

 25.2 



0.170 

 0.237 



31.6 

 39.1 



0.044 

 0.230 



1 



] 



Do 17.8 1 0.312 





Do 



20. 0. 606 





1 Pentaeme eontorta (white 



12. 1 0. 103 

 16.6 0.008 

 1 0.621 

 13.1 











i 



' Do 





1 



1 



1 





i IKpteroearpus vemi eiflu- 



26.7 

 25.8 



0.541 

 0.584 







45.3 



0.476 



0.327 

 0.508 







44.5 



4L0 



1 Do 



Do ! J 



1 



Anitoptera thurifera (pa- 



loBapis) 18.8 



Shorea polysperma (tan- 



0.525 







1 " 

 32.5 j 0.170 







1 

 1 

 1 









1 \ 



1 ^ 1 1 



Total 





2.922 

 0.417 



1.632 



0.383 



26.1 



0.44*1 



0.148 i 



1.311 

 0.437 









2^ 



?.9 



67.6 



22.8 







Species. 



Diameter class iiT centimeters. 



1 



50 to 60. 



60 to 70. 



70 to 80. 



1 



'^^: Growth. 



Diam- 

 eter. 



Growth. 



Diam- 

 eter. 



Growth. 



Shorea guiso (gTiijo) 



50.4 0.198 



i 











Do - 











; Do 















1 Pentaeme eontorta (white I 



luan) 



51.8 



0.443 











1 Do. 









73.6 



0.170 



1 Dipteroearpus vemieifluaa (pamo) 



1 Do - 



65.4 

 51.2 





65.6 

 62.0 



0.240 

 0.285 



0.301 







1 



; Do. - 









Anisopte'^a thurifera (paloc 



^pis) 



51.5 



0.639 











Shorea polysperma (tan^uil 



e) 



1 



72.0 



0.606 









1 """ 



Total 





1.481 1 1 0.528 



0.296 i 1 0.262 



.. 



0.678 

 0.3S9 



Average. 





! Years in class 



3! 



) 8 38 1 



2<» .■; 













1 



sicierable when compared with the bulk of the main stancJ, but 

 they are always present in large numbers, although owing to 

 their greater diversity and smaller size they are of little (jom- 

 mercial importance when compared with the dipterocarps. How- 

 ever, they occupy growing space both in the soil and in the 



