﻿ILLUSTRATIONS. 



Plate I. Outline map of portion of Luzon showing location of llocos Norte. 



11. Map of portion of llocos Norte showing location of mineral districts. 

 III. Fig. 1. View of plain and mountains in the background. 



Fig. 2. View of upland country between Pasuquin and Bangui. 

 IV. Fig. 3. Another view of upland country between Pasuquin and Bangui. 

 Fig. 4. Looking across the upland country toward the Cordillera, Ca- 

 raballo del Norte. 

 V. Fig. 5. View from Nagpartian Ridge toward the coast. 

 Fig. 8. The pseudo-congomerate in the serpentine. 

 VI. Fig. 6. Feldspar phenocryst in andesite, showing twinning and zonal 

 growth. Magnified about 14 times. 

 Fig. 7. Thin section of peroxenite. 14 times. 

 VII. Fig. 9. Brecciated jasper. 



VIII. Fig. 10. Section of radiolarian ( ?) chert. Magnified 120 times. 

 Fig. 11. Same magnified 350 times. 

 IX. Fig. 12. Tilted ash, tuff and sand beds on Punta Negra. 



Fig. 15. Open cut in serpentine and "asbestos," Dungn-Dungan. 

 X. Fig. 14. Crysotile from Dungn-Dungan, llocos Norte. 

 XI. Ideal section from Pasuquin northeast to Cordillera along line west 

 to east (Plate II). 

 Figs. 13, 16, and 17, woodcuts, explained in the text. 



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