276 ^^6 Philippine Journal of Science im 



funds available for such work. Most of the analyses were made 

 at the request of other bureaus or private individuals, and we 

 were unable to get information concerning the source or history 

 of the sample submitted other than that given in the tables. 

 When this work was begun, requests for water analyses were 

 received in such number that the laboratory found itself over- 

 whelmed with work. Only the most necessary analyses could 

 be completed, and manj^ determinations, especially of mineral 

 constituents, were neglected. As transportation facilities in 

 many parts of the Archipelago are poor, and certain samples 

 were from twenty to thirty days old when received at the labo- 

 ratory, the analyses, in many respects, cannot be said to represent 

 accurately the composition of the original source. The number 

 of analyses made by the Bureau of Science has increased from 

 year to year, and at the end of the calendar year 1913 was 

 as follows: Sanitary analyses, 750; technical analyses, 352; 

 mineral analyses, 93. 



WATER COURSES 



Table I shows typical analyses of water from rivers and flow- 

 ing streams throughout the Philippine Islands. 



