32 THE BUREAU OF SCIENCE 



nished some interesting rock specimens. A small lake possibly 

 never before visited by white men was explored and mapped. 



The Cebu typhoon. — Investigations of the destructive tidal 

 wave in Cebu in October have shown that the Osmeiia dam 

 site suffered considerably in the place where a geologist of this 

 Bureau had previously pointed out a probable weakness. 



Water resources of Panay. — Doctor Smith spent three weeks 

 in Panay investigating the ground-water resources of a portion 

 of Iloilo Province. He was able to arrive at the following 

 definite conclusions: 



1. The sedimentaiy formations could not be feasibly tapped to produce a 



sufficient supply of potable water. 



2. The buried gravels of the Iloilo delta showed favorable possibilities in 



this direction. 



3. The gas and salt-water well at Janiuay is an indication of the possibilities 



for a petroleum supply somewhere in that region. 



Material was secured on this trip to make a contribution to 

 the geology and physiography of that none too well-known island. 



Ore deposits. — A number of experiments on the principles 

 controlling the deposition of gold in quartz-calcite-manganese 

 veins and important contributions to the metallogeny of the 

 Philippines have been made. 



Geologic tvork. — More or less interrupted investigations in 

 various , regions have given data on Philippine stratigraphy, 

 which have led to a revision of the table of the sequence of 

 Philippine formations, and other information which will be used 

 in future monographs and other publications. 



BIVISION OF ETHNOLOGY 



There has. been no change in the personnel of this division 

 during the year. Since the disastrous fire which occurred in 

 the vicinity of the museum on Calle Juan Luna in November, 

 1911, only new buildings of concrete have been built, so that 

 the museum is in no great danger from fire from the rear or 

 south end. At my request, the Bureau of Public Works has 

 recently finished a fire wall at the north end of the museum 

 where the building joins property occupied by Chinese. This 

 wall was built on top of the old stone wall one story in height, 

 extends 1 meter above the roof, and makes the museum as safe 

 from fire as it can be in its present location. When the museum 

 was disarranged with building operations and the laborers were 

 at hand, the storeroom and the smaller office, which formerly 



