VI 



W111TF0K1>. 



Tile li«:iiivs .sliow the jteivfiitajrc <»l' l)ulk oT the (li|)lci(Hai|>.s in the 

 two types to be respectively 53.7 per cent and OG per cent, a percentage 

 that is much hifjlier than that of the .sitand, indicating that the volume 

 of these trees averages liiglier than that of the other sj)ecies. 



FORESTS IN XOltTIIKI.'N NKOKOS. 



On the lower slojics of "Mount SiJay. Xegros, is a large body of timber. 

 In cooj)eratinn willi II. D. l-]vrn'ti. this leginn was investigated. 



The work was done on a lumber concession containing alxmt 1(>,0()0 

 hec-tares of solid dipterocarj) forest. The tract lies on the lowci- slopes 

 of Blount Silay just back of the coastal strip of cultivated sugar lands, 

 here about 1(» kilometers wide. It is situated on both sides of the Himu- 

 gaan liiver. The land is characterized by gentle slopes, with alternating 

 ridges; the elevation ranges from 30 to 3T() meters. Small streams and 

 aiToyos are scattered ]jrofusely over the tract.' 



The methods used in estimating the stand and dett'nnining tlie com- 

 position of the forest were identical willi those in ^lindoro. 



Tables X and XT show the stand and volume of the forest. 



Table X. — Sfninl of trees J/O centimeniers and over in diameter in northern Negros 

 {average of o.'/.Oo hectares). 



The significance of these figures, sliowing a dipterocaij) stand of T'^O^J: 

 trees per hectare out of a total of SI. ?.")() and a jx-rccntage of S!i.l needs no 

 comment. 



Diospi/ros niititlanacnsis Men-. ( h'hi'nacciir) and ]'it('.r (ihcniiana 



'Everett. II. 1). iiiul Wliiltnnl. 11. \. A I'lciiminMiy Working Plan for tlio 

 Public Forest Tract <>f tlic In-ular i,uiiilM-r Coniiiaiiy. X.-u'ros Occi.leiital. P. I. 

 Pineaii <.f Forestry (IMiilip.) Mull. 5 (liHMi) 1 .ll. 



