708 
WHITFORD. 
On the above mentioned plot there were counted in all 3,458 trees; of 
these 2,110 belong to the enumerated dipterocarps (II o pea acuminata and 
Vatica mangachapoi not being included) and the remainder 1,348 dis- 
tributed among the remaining of which the list given above is fairly 
representative. An examination of this list shows that there are included 
29 families and over 60 species. 
The following table gives the volume on the Limay tract : 
Table V . — Volume on 50 {J/-9J/.9) hectares on the Limay ( Bataan ) tract — all 
trees J/.O centimeters and over included. 
Scientific name. 
Common name. 
Cubic 
meters 
per 
hectare. 
Per 
cent. 
Dipterocarpaceae: 
Dipterocarpus grandiflorus Blanco 
[ Dipterocarpus vernicifluiis Blanco 
Pentacme contorta Merr. & Rolfe 
j Anisoptcra tliurifera Blanco ._ _ 
Shorea poly sperma Merr. 
Apitong 
Panao 
White lauan_ _ 
Palosapis 
Tanguile 
| 81.6 
06. 5 
28 
16 
4.1 
28.6 
23.3 
9.8 
5.6 
1.5 
Total Dipterocarpaceae _ 
196.2 
89.0 
285.2 
68.8 
31.2 
100.0 
All others _ 
Total . _ 
Tables IV and V show that 60.9 per cent of the stand and 68.8 per 
cent of the volume respectively on the above tract are composed of six 
species of Dipterocarpaceae, and that three species, viz, Dipterocarpus 
grandiflorus, Dipterocarpus vernicijiuus and Pentacme contorta form 45.9 
per cent of the stand and 51.9 per cent of the volume. 
FORESTS ON A DELTA PLAIN IN MINDORO. 
In cooperation with M. L. Merritt, a tract of land on the east coast 
of Mindoro comprising some 55 square miles was examined. This is 
a delta formation, slightly raised, forming a number of different physio- 
graphic units. Corresponding to these are distinct vegetative types. 
In this connection it is not important to distinguish between these. 
After some intensive study to learn to distinguish the numerous kinds of 
trees found on the tract, valuation surveys were run by what is known 
