ILLUSTRATIONS. 



Page. 

 Map 1. Map of Northern Luzon, the Batanes and Babuyanes Islands ' 

 (from Census Report). (Frontispiece.) 



2. Map of the Batanes Islands (from Coast Survey Chart) 10 



3. Map of part of the Batanes Islands (from Coast Survey Chart).. 12 

 Plate I. Upland topography, Sabtan (photo by Ferguson) ^ 26 



II. Matarem Range from above Itbod. Mount Matarem in the dis- 

 tance (photo by Ferguson) 26 



III. Coast of Batan Island south of San Carlos (photo by Worcester) 



IV. View of coast of Batan Island, looking southwest from Santo 



Domingo. Sabtan and Ibujos in the distance. Type of native 



boat in foreground (photo by Worcester) 26 



V. Mount Iraya from Santo Domingo (photo by Worcester) 26 



VI. Mount Iraya from the south (photo by Freer) 26 



VII. Inem Island (photo by Worcester) 26 



VIII. Mabudis Island from the East (photo by Worcester) 26 



IX. Topography of Ibujos Island (photo by Ferguson) 26 



FiGUKE 1. (In the text.) Ceskid Mountain and Ajao Point, Sabtan 7 



2. (In the text.) Southern part of Batan Island from San Vicente 



de Sabtan 8 



3. (In the text.) Diagram of a sea cliff (modified by Gilbert) 9 



4. (In the text.) Section through Ibujos, Sabtan, and Batan, 



along line ABCD (PI. II) 10 



25 



