0 eee oe ae 
tw 
xu,c,6 Brown: Mount Banahao’s Podocarpus Imbricatus 3293 
size class from 0 to 10 centimeters into 10 centimeters may be 
assumed to be the age of a 10-centimeter tree. 
Adding this 
quotient to that obtained in a similar manner for the 10- to 20-- 
centimeter class, gives the age of a 20-centimeter tree. 
In order 
to obtain figures for the age of trees of any size and to represent 
the above data in graphic form, a curve of diameter growth on 
age was constructed by plotting the data on cross-section papers, 
the ordinates of the curve being diameters and the abscissae, 
years. 
TABLE IV.—Annual diameter growth of Podocarpus imbricatus at top of 
Mount Banahao, Luzon, P. I. Altitude, about 2,100 meters. 
[Diameter in growth are given in centimeters. ] 
Diameter class in centimeters, 
No. of tree in class. — 0-10 10-20. 20-80. 
eo anh ere Diam- | Growth.| Dism Growth 
ten tae my ae SRE eT 7.6 0.06 12.8; 0.82 20.7} 0.18 
, Se Se ee te es 8.5| 0.06 13.4{ 0.18] 21.0] 0.09 
Sr eee 14.1} 0.17] 21.1] 0.09 
; ee ee ee ees Se es eee See Be 15.4; 0.06] 21.2] 0.22 
te 15.9 0.09; 21.8] 0.03 
GSS Saher & 1S Seen OE ae? Ree earn 16.0) 0.19| 21.5] 0.85 
es ee 17.2' 0.06/] 21.8] 0.06 
a re 17.8| 0.14; 220] 0.22 
Peet Semen See cen eee) See See So 18.1| 0.06] 22.2] 0.08 
We ee 18.3{ 0.16| 224] 0.06 
es ea ee a 13.7 0.18| 227] 0.19 
es ee ee NE? 2 Ms 19.0; 0.09] 23.0, 0.35 
5S ES Seeegare ys Seema: Rage eee Mamie: a fad ee eee 19.4 0.32 23.2) 0.14 
a ee ee 19.6/ 0.08! 28.4] 0.19 
ee ee re lei tee, Ease tes Waa eae 23.6} 0.08 
ee er a ee ee 24.0; 0.08 
ns a ge a ee 24.2| 0.19 
ee ee eee Bees Boe 25.0! 0.19 
Si ee ee 25.8 |: 0.14 
ee ee me Bie Ss ee: SA SE 25.6| 0.18 
Oe ee eh ee fe a 26.4| 0.22 
We i i ee ce ea es ee ee | ee 26.6| 0.11 
a a ee Fs i: epee 26.6} 0.09 
Se eet rei LER ohn cca 26.7| 0.16 
OB re eS ae we ee NS Bo A oat ce 26.9} 0.09 
OG ee a ee ret ot ee ee er ea es 27.5| 0.35 
Co ee Rao ta Pa 27.8| 0.06 
Me a ee ee eee Segacings pao 29.8| 0.18 
=. Se ee es tee Bae ee 29.4| 0.09 
MG ig Fea oes Saee| elses ee eens 29.5| 0.29 
Pn eee ea eet te ae oe CE Santee 0.14 0,15 
Noeard 10. cl066 60053 ocd. cuhascesies 5 Se een 8 eA 67 
