XI, A, 5 Pratt: Philippine Lakes 237 



center of the island, with an area of 0.25 square kilometer, and 

 Singuan and Ernestine, near the southern coast, with areas of 

 1 square kilometer each. The last-named lakes are circular in 

 outline and might be supposed to occupy old craters. A third 

 circular body of water, Jinata, has a restricted opening to the 

 sea and is thus in reality a bay, although apparently related in 

 origin to lakes Singuan and Ernestine. On Jolo Island are two 

 lakes. Crater Lake and Siit Lake, each with an area of 1 square 

 kilometer. 



