236 The Philippine Journal of Science isis 



wide, and 21.7 meters deep. The greatest depth is near the 

 southern shore, which is steeper than the northern shore. Maur- 

 ice Goodman visited these two lakes while examining sulphur 

 deposits in Leyte and found Lake Malaksan to be at an elevation 

 of 375 meters and Lake Jaruanan, which he calls Lake Pangi, 

 at an elevation of 350 meters. 



LAKES OF SAMAR 



Samar Island is very low lying for so extended an area, but 

 while parts of the island are said to be swampy, lakes appear 

 to be neither very numerous nor important. The island is not 

 well explored, however, and inland bodies of water may well 

 have escaped notice. 



Lake Calbiga is the only lake shown on most maps of Samar. 

 It lies a little south of the central portion of the island, covers 

 an area of about 10 square kilometers, and drains to the west 

 through Calbiga River. The lake is said to have the form of 

 a caldera with high, steep shores and to be of unusual scenic 

 interest. 



Three other lakes, namely, Sompotoc, Ganoy, and Sampinit, are 

 credited to Samar by El Archipielago Filipino, but no information 

 is given concerning their location or size. 



LAKES OF PALAWAN 



A single, small lake is recorded for Palawan by Randall A. 

 Rowley, assistant professor of geology, University of the Philip- 

 pines. This lake, known to the Filipinos by the name Manguao, 

 lies a few kilometers inland from the town of Taytay on the east 

 coast of northern Palawan. It is elongated in an east-west 

 direction, is irregular in outline, and covers an area of approxi- 

 mately 5 square kilometers. Soundings taken at a time when 

 the water stood 1 meter below high-water mark revealed a 

 uniform depth of 6 meters. The lake drains to the southeast, 

 the water escaping through the openings in a wall of vesicular 

 or cellular basalt. 



LAKES ON SMALL ISLANDS 



There are a number of other small lakes distributed over the 

 less important islands. On Pacijan Island, southwest of Leyte, 

 there is a lake or swampy area 5 square kilometers in extent 

 lying at, or slightly above, sea level. Its water is brackish and 

 is probably contaminated with sea water. The small island 

 Cagayan de Sulu contains three small lakes: Sapa, near the 



