Cox AND Arguelles: Soils of Luzon.] 



[Phil. Journ. Sci., IX, A, No. 1. 



Fig. 1. View from Updas toward Lutab. 



Fig. 2. View from Lutab toward Bakung and Updas. 



Fig. 3. Coffee trees and rice terraces near Cabayan. 

 PLATE IV. THE AGNO RIVER VALLEY. 



