66 



The Philippine Journal of Science 



1»16 



I was detailed to make a "sanitary sur\'ey" of the available 

 water supplies of Iloilo with a view toward determining the 

 relative merits of the different projects. Accordingly a field 



Fig. 1. Guimaras Island and a part of Panay. 



investigation including chemical assays and biological exami- 

 nations was undertaken in November, 1914, the results of which 

 are detailed herewith. 



