452 The Philippine Journal of Science 



Fig. 3. Mount Santo Tomas in the background; 



pography on the southwestern edge of Baguio Plateau. From i 

 point near Government Center. 



Plate 7 

 The Zigzag on Benguet Road. Bued River Canon on the right. 



Fig. 1. Bued River Valley. (Photograph by A. J. Eveland.) 



.2. Baguio Hospital, on the outer edge of Baguio Plateau. At the 

 extreme left, slices of the Baguio formation are being slipped off 

 from season to season. Mount Santo Tomas is the highest peak 



2. Baguio City in 1905. (Photograph by A. J. Eveland.) 



. 1. Flora from Baguio tuffs near Government center. Clethra land- 

 folia (Turcz.). 



2. Loacan Valley from Mount Santo Tomas Trail. 



3. North-dipping coralline limestone beds, east side of Trinidad 



Valley, and compact andesitic tuff-breccia of the Baguio formation. 

 The low gap marks the location of a prominent fault between 

 the above-mentioned beds. 



Plate 11 

 , 1. Close view of Trinidad Water Gap, looking south from the provincial 

 capitol. Marshy area in the foreground, Pacdal Hills in the back- 

 ground. 



2. North-dipping limestone on east side of Trinidad Valley. Fault 



between this limestone and hard resistant andesitic breccia of 

 the Baguio formation is marked by the low gap in the center. 

 This low gap is not the exit of Trinidad River, but this gap 

 was formed long after Trinidad River was intrenched in its 

 north water gap which lies between the rounded hills on the left 

 and the hill slope on the extreme left. One bowlder eroded from 

 Malumbang coralline limestone was found near the top of the 

 rounded hill on the left, and other fragments were found on the 

 hill slope about the extreme left edge of this picture. Definite 

 stream gravels occurred slightly to the left beyond the picture. 



3. Looking south across Trinidad Valley, Trinidad farm school build- 



ings in the left center. A 4,850-foot terrace on the left; hills 

 around Baguio seen beyond Trinidad Water Gap. Hills on the 

 right consist of Malumbang limestone. 



