324 



The Philippine Journal of Science 



1915 



than half its length. It is elongated in a north-south direction, 

 and attains an elevation of 70 meters (230 feet). The island 

 is separated from the mainland to the south of it by a stretch of 

 shallow water about 500 meters (1,600 feet) wide. Text figure 



Fig. 2. Showing the location of the Calambayanga iron-ore deposits, Camarines Province. 



2 shows the general situation of Calambayanga Island. Off 

 the northwest point of the island the sea has a depth of 10 

 meters (33 feet) within 100 meters of the shore line, and a 

 depth of 7 meters (23 feet) persists to within 50 meters of the 

 western shore line. By utilizing small outlying reefs to the 



