178 "^he Philippine Journal of Science wis 



time, so accurate base maps are wholly lacking. The object of 

 this trip was to traverse as much territory as possible and note 

 the more obvious things of interest first ; therefore the following 

 pages will necessarily give fragmentary discussions of the geology 

 of this large area. 



FIELD ITINERARY 



The route traveled was as follows: Tagudin via Cervantes to 

 Bontoc, Bontoc to Barlig, Barlig to the summit of Mount Amu- 

 yao, Barlig to Natonin (southern Kalinga), Natonin to Tabuk, 

 Tabuk to Lubuagan, Lubuagan to Bontoc, Bontoc to Mainit, Bon- 

 toc to Lubuagan, Lubuagan to Belotoc, Lubuagan to Balinsogao, 

 Lubuagan to Balbalasan, Balbalasan down the Saltan Valley to 

 Patician, thence to Lubuagan. From here back to Bontoc and on 

 to Sagada, Sagada to Fidelisan and Basao, Sagada to Cervantes 

 and thence to Mancayan, Mancayan to Baguio, and from there to 

 Manila (fig. 1). 



Acknowledgments for much assistance in an official capacity 

 and many personal courtesies are hereby made particularly to 

 Gov. E. A. Eckman, of Mountain Province ; to Lieut. Gov. Walter 

 Hale, of Kalinga ; to Capt. W. E. Moore, senior inspector of 

 Constabulary at Bontoc; and to Lieut. J. F. Oliver, Philippine 

 Constabulary, formerly stationed at Lubuagan. Governor Eck- 

 man and Captain Moore accompanied me on my trip through 

 eastern Kalinga, while Lieutenant Oliver accompanied me on 

 several short trips in western Kalinga. 



PAST WORK 



As far as is known from the literature on the subject, von 

 Drasche is the only geologist who has heretofore gone into the 

 interior of north-central Luzon north of the town of Cervantes, 

 and he traveled only a short distance north of Bontoc and did 

 not go any farther east than Bontoc. He has devoted a chapter 

 in his "Fragmente" to this part of his travels. - 



As this publication is not easily available, a translation of 

 Chapter VH, which was made for me hy Mr. A. E. W. King, 

 Bureau of Science, is inserted here. 



THE MILITARY DISTRICTS OF LEPANTO AND BONTOC 



The watershed between the large rivers Abra and Agno is only a low 

 chain of hills, consisting of three parallel ranges, having a south-south- 

 westerly direction, and consisting of a weathered sanidine-hornblende- 

 trachyte. Without passing through [the village of] Lipatan, one reaches 

 the hamlet of Mancayan at an elevation of approximately 3,500 feet, which 



'Fragmente zu einer Geologic der Insel Luzon. Wien (1878), 36-46. 



