i(l,s 



AVIIITFOUI). 



On tlie above mentioned plot there were counted in all 3,458 trees; of 

 these 2,110 belong to the enumerated dipterocarps {Ilopea acuminaia and 

 Vatica mangnchapoi not being included) and the remainder 1,348 dis- 

 tributed among the remaining of wliicli tlie list given above is fairly 

 representative. An examination of this list shows thai there arc included 

 29 families and over 60 species. 



The following table gives the volume on the Limay tract : 



Table V. — Voluivc on '>0 (JfD.Jf'J) hectares on the Limaj/ (liataan) tract — all 

 trees JfO centimeters and over included. 



Tables IV and Y show that (50.9 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 vernicifluus and Pentacme contoria form 45.9 

 per cent of the stand and 51.9 per cent of the volume. 



FOIiHSTS ON A D1:LTA plain in ]\1IND01!0. 



In cooperation with M. L. Merritt, a tract of land on the cast coast 

 of Mindoro comprising some 55 square miles was examined. This is 

 a delta fonnalion, slightly raised, forming a number of dilfcrent physio- 

 graphic units. Corresponding to these are distinct vegetative types. 

 In this connection it is not iin[)()ilaiit to distinguish between these. 

 After some intensive study to learn tu distinguish the numerous kinds of 

 trees found on the tract, valuation surveys were run bv what is known 



