ILLUSTRATIONS 



Plate I 



(Photographs by Pratt.) 



Fig. 1. Cylindrical concretion with bitumen-filled central opening protruding 

 from Canguinsa clay-tufF. Campocpoc, Villaba, Leyte. 



2. Bitumen-cemented breccia dome protruding from Canguinsa clay- 



tufF. Campocpoc, Villaba, Leyte. 



3. Outcrop M, Villaba, Leyte. Mixture of bitumen and clay-tuff in 



Canguinsa clay-tuff. 



4. Outcrop of petroliferous Vigo shale near Baliti, Villaba, Leyte ; fissile 



beds dipping at an angle of about 30°. 



TEXT FIGURES 



Fig. 1. Outline map of northwestern Leyte. 



2. Map of the vicinity of Villaba, Leyte, showing the situations of 

 outcrops of bitumen and seepages of petroleum. 



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