Heise: Constancy of Philippine Waters 



311 



Table II are shown an analysis published by Centeno s in 1890 

 and a recent routine analysis made in the Bureau of Science. 



Table II. — Analyses of ivater from Sibid Springs. 



! Total solids 



I Silica (SiOz) 



j Bicarbonates (HCO3) 



' Sulphates (S0«) 



' Chloride (CD 



Calcium (Ca) 



Magnesium (Mg) 



Analyzed 

 Centeno, by Bureau 

 1890.B of Science. 

 1915.b 



* Recalculated as parts per million and to same terms as those used in standard practice. 

 '> Analyzed by F. Pefia, chemist, Bureau of Science. 



Considering the length of time that has elapsed between 

 the two analyses and the fact that the waters at Sibul Springs 

 were neglected for a year during that interval, better agreement 

 could be hardly expected. 



8 Centeno, J., et al., Memoria descriptiva de 

 Isla de Luzon. Madrid (1890), 39. 



manantiales, etc. de 



