1(1 



WHITFORD. 

 Taui.k VII. — llatjachac type {average of IJf hcclarcs.) 



It will be seen by tiie above that in the narra type approximately 2'Z 

 trees out of every 66 and in the hagachac type 35 out of eveiy 60 trees 

 per hectare are dipterocarps or respectively 33.11 per cent and 41.50 

 per cent of all trees over 40 centimeters. 



Unfortunately for the purposes of this paper the volume tables pub- 

 lished in Bulletin 6, showing the cubic contents of timber per unit of 

 area do not include all of the species. -But the results given below show- 

 ing the proportion of dipterocarps are not far from the actual proportion, 

 for a large per cent of the species not mentioned show a maximum 

 diameter of not over 45-50 centimeters and short boles usually one-fifth 

 to one-third the length of the boles of the dipterocarps. Four species, 

 Dracontomelum, agupanga and two species of Canariam mentioned in 

 the stand tables are not included in the tables below. Agupanga has a 

 short bole usually about one-fifth tlic lonotli of anv of tlic dipterocarps 

 of the same diameter. While Iho bole of tlic Caiiariniu is somewhat 

 longer yet the number of trees per hectare is small, ^'oitlier agupanga nor 

 the Canariums attain the maximum diameter of the dipterocarps. Dra- 

 coniomrlum dao on the other hand, reaches a inaxiuniin of 110 eonti- 



